| a- |
Without, lacking. |
|
| a-, ab- |
Away from, see abaxial. |
|
| abaxial |
Of a lateral organ, the side or surface facing away from the axis, normally the lower surface. |
|
| abiotic |
Not involving living organisms. |
|
| abortive |
Imperfectly developed, not grown to its normal size or function, usually of flowers or fruits. |
|
| abscission |
The normal shedding of an organ that is mature or aged, e.g. an old leaf, a ripe fruit etc. |
|
| acaulescent |
Stemless, or with no visible stem |
|
| accrescent |
Enlarging after maturity, as the stem or the calyx of some plants after flowering. |
|
| achene |
A small, dry, indehiscent, single-seeded fruit, characteristic of Ranunculus; in a strict sense developed from a superior ovary of one carpel and with the seed free from the fruit wall. |
|
| acicular |
Needle-shaped, narrow, stiff and pointed. |
leaf shapes 1 |
| aciculate |
Finely scored on the surface, as if scratched by a pin. |
|
| acrogynous |
In sedges, with female flowers in the top of the spike. |
|
| acroscopic |
Facing towards the apex or distal end of an organ. |
|
| actinomorphic |
Of flowers, radially symmetrical, symmetrical about more than one plane passing through the axis of the flower. |
|
| aculeate |
Prickly. |
|
| acuminate |
Tapering gradually to a protracted point. |
leaf top |
| acute |
Tapering to a pointed apex with more or less straight sides. |
leaf top |
| ad- |
To, towards. |
|
| adaxial |
Of a lateral organ, the side or surface facing towards the axis, normally the upper surface. |
|
| adnate |
Fused to an organ of a different kind, e.g. applied to a stamen fused to a petal. |
|
| adventitious |
Arising in abnormal positions; of buds, those produced elsewhere than in the axils of leaves or the end of a branch; of roots, those coming from organs other than the main root system, such as the stem. |
|
| adventive |
Indeliberately brought in by man or his agents recently. |
|
| aerial |
Whole plants or parts of plants living above the surface of the ground or water. |
|
| aestivation |
The spatial arrangement of floral parts in the bud. |
|
| agamospecies |
A species which usually produces seeds asexually, by agamospermy. |
|
| agamospermy |
The formation of seeds by pseudo-sexual means. The embryo is formed from entirely maternal tissue, so that the offspring is genetically identical with their female parent. |
|
| aggregate |
Of separate elements collected into one mass; aggregate fruit, a cluster of fruits formed from the free carpels of one flower but with the ripening of the fruit forming a single unit, as the strawberry or raspberry; of taxa, an assemblage of distinct, though very similar taxa with a phylogenetic relationship |
|
| alate |
Winged. |
|
| allele |
One of two or more alternate forms of a gene. |
|
| allogamous |
With allogamy. |
|
| allogamy |
Fertilization of ovules by pollen from a different flower, either between different flowers of the same plant (geitonogamy, resulting in selfing), or between flowers of different plants (xenogamy, resulting in crossing). |
|
| allopatric |
Of two or more taxa, occupying different geographical areas. |
|
| allopolyploid |
A polyploid species resulting from two different species interbreeding and combining their chromosomes. |
|
| alternate |
Of leaves or other lateral organs, borne singly at different levels on the axis; of floral parts, on a different radius, describing e.g. the position of petals with respect to sepals. |
arrangement |
| alternately pinnate |
Of a pinnate leaf, where the leaflets are not opposite. |
|
| alveolate |
With small pits, looking like a honeycomb. |
|
| amphidiploid |
An allopolyploid that forms only bivalents at meiosis, thus functionally a diploid. |
|
| amplexicaul |
Of a leaf base, clasping the stem. |
|
| analogous |
A structure that functions similarly but has a different phylogenetic origin than another entity. |
|
| anastomosing |
Forming a network; usually applied to veins. |
|
| androdioecious |
Having male and bisexual flowers, but on separate plants. |
|
| androecium |
The male reproductive organs of a flower; all the stamens. |
|
| androgynophore |
A stalk above the level of the insertion of the perianth, bearing both the androecium and the gynoecium. |
|
| androgynous |
Having male and female flowers on the same plant. Synonymous with monoecious; not used in this Flora. |
|
| andromonoecious |
Having male and bisexual flowers on the same plant. |
|
| androphore |
A stalk supporting a group of stamens. |
|
| anemochorous |
Dispersed by wind. Not used in this Flora. |
|
| anemophilous |
Pollinated by wind. Not used in this Flora. |
|
| aneuploid |
A plant having a chromosome number that is not an exact multiple of the base chromosome number of the group. |
|
| angiosperm |
A seed-bearing plant with ovules, and hence seeds, developing within an ovary. |
|
| angular |
Of stems, having more or less distinct corners in cross-section, e.g. triangular, quadrangular; of leaves, having several salient angles on the margin. Obtuse-angled, when the angles are rounded, acute-angled, when they are sharp. |
|
| anisomerous |
Having a different number of parts (usually less) in whorls of different kinds, as in a flower with five sepals and petals, but only two stamens. |
|
| annual |
A plant that completes its life cycle within a year; a winter annual germinates in autumn and flowers the next spring or summer, a summer annual germinates in spring and flowers the same year.. |
|
| annulus |
A ring; in ferns, the elastic ring of cells, forming part of the sporangium wall. |
|
| ante- |
Before, in front of. |
|
| anterior |
In the front; on the side away from the axis, as the lower lip of a bilabiate corolla. |
|
| anther |
The part of the stamen containing the pollen. |
|
| anthesis |
The period during which the flower is open, from bud-burst until withering of floral parts. |
|
| anthocyanin |
A large group of water soluble pigments that are red, blue or violet, usually giving plant parts a reddish tinge. |
|
| antrorse |
Directed towards the distal end. |
|
| apetalous |
Without petals. |
|
| apex |
The very tip of an organ. |
|
| apical |
At the apex; also used in the sense of distal. Of a placenta, having the ovules attached at the top of the ovary. |
placentation |
| apiculate |
With an apiculum, ending abruptely in a short, flexible point. |
leaf top |
| apiculum |
A short, distinct, flexible terminal point. |
|
| apocarpous |
A flower with carpels free from one another, as in Ranunculus. |
|
| apomictic |
A plant that propagates by a non-sexual mode, including seed formation without fertilization (agamospermy) and vegetative reproduction. |
|
| apomixis |
Any form of reproduction by non-sexual means, including seed formation without fertilization (agamospermy) and vegetative reproduction. |
|
| apophysis |
A thickened terminal part of the ovuliferous scale on the cone of certain pines; a projection or protuberance. |
|
| appendiculate |
With small appendages. |
|
| appendix |
An extension, e.g. a supplement. |
|
| appressed |
Pressed closely against another organ but not united with it, e.g. hairs on the stem. |
|
| arborescent |
Tree-like in growth or general appearance, applied to non-woody plants and to shrubs becoming tree-like in size. |
|
| archegonium |
In non-seed plants, the structures where eggs are produced. |
|
| arcuate |
Curved like a bow. |
|
| areola |
The area delimited by one mesh in a web pattern; e.g. a distinct area on the face of a seed, bounded by a fine line, or the space bounded by the finest veins in a leaf-blade. |
|
| areolate |
Marked out into small, usually angular spaces. |
|
| aril |
A more or less succulent covering around a seed, inside the pericarp and outside the seed coat, as in Taxus. |
|
| arista |
An awn or bristle. |
|
| aristate |
Having an awn or bristle at the tip. |
leaf top |
| articulate |
Jointed. |
|
| ascending |
Growing erect after an oblique beginning, usually curved. |
|
| asexual reproduction |
The formation of new individuals without the fusion of gametes, the offspring being genetically identical to the parent. |
|
| asperous |
Rough to the touch with short, hard projections. Synonymous with scabrid and muricate. |
|
| asymmetric |
Irregular, with no plane of symmetry. |
|
| auricle |
An ear-shaped appendage at the base of a leaf or a leaflet. |
|
| auriculate |
With auricles. |
attachment |
| autogamous |
With autogamy. |
|
| autogamy |
Within-flower fertilization; also (from genetical point of view) within-individual fertilization. |
|
| autopolyploid |
A polyploid species resulting from one species doubling its chromosome number. |
|
| awn |
A bristle-like appendage, e.g. on the tip or back of the lemma of a grass flower. |
|
| axil |
The angle between main and lateral axes, e.g. the angle between a bract or leaf and the axis bearing it. |
|
| axile |
On an axis; of a placenta, on the central axis of the ovary. |
placentation |
| axillary |
In the axil. |
|
| axis |
The main or central stem of a plant or inflorescence. |
|
| basal |
At or near the base; of a placenta, having the ovules attached at the base of the ovary. |
placentation |
| basifixed |
Attached at or by the base; of anthers, when the filament is attached to the base of the anther. |
|
| basigynous |
In sedges, with female flowers at the base of the spike. |
|
| basiscopic |
Facing towards the base or proximal end of an organ. |
|
| beak |
A prominent terminal projection, especially of a carpel or fruit. |
|
| berry |
A juicy indehiscent fruit, with the seed(s) embedded in a fleshy tissue, as the tomato. |
|
| bi- |
Two, twice. |
|
| biconvex |
Convex on two sides. |
|
| bidentate |
Ambiguous, use "with two teeth" or "doubly dentate" instead. |
|
| biennial |
A plant that needs two years to complete its life cycle, not flowering in the first season. |
|
| bifid |
Two-cleft. |
leaf top |
| bilabiate |
Two-lipped. |
|
| bilocular |
Having two cavities. |
|
| bilomentum |
A siliqua which at maturity breaks transversally into one-seeded segments. |
|
| binary name |
The name of the species is a binary combination consisting of the name of the genus followed by the specific epithet. |
|
| bipartite |
Divided nearly to the base into two parts. |
|
| bipinnate |
Twice pinnate, i.e. the primary divisions of a pinnate leaf are themselves pinnate. |
leaf shapes 2 |
| bisexual |
Bearing both male and female organs together, e.g. in the same flower. |
|
| bisymmetric |
Of flowers, having two planes of symmetry, as in Brassicaceae. |
|
| biternate |
Twice ternate, the three pinnae each divided into three pinnules. |
leaf shapes 2 |
| blade |
The expanded part of a leaf. |
|
| bloom |
A delicate, waxy, easily removed covering to fruit, leaves, twigs etc.; see also pruinose. |
|
| bract |
A modified, often scale-like leaf subtending a flower, an inflorescence or a branch; in the Apiaceae applied to the leaves at the base of the rays of a compound umbel; in the Pinaceae applied to the outer scale subtending the ovuliferous scale of a cone. |
|
| bracteate |
With bracts. |
|
| bracteole |
A supplementary or secondary bract on the pedicel of a flower; usually paired in dicotyledons, single in monocotyledons. |
|
| brevistylous |
Short-styled; of plants or flowers having short styles and long stamens, used in heterostylous taxa. |
|
| bud |
An immature shoot covered with tough scales, or an undeveloped flower usually protected by the calyx. |
|
| bud-scales |
Scales enclosing a bud before it expands. |
|
| bulb |
A swollen, usually underground organ made up of a condensed stem and succulent, scale-like leaves or leaf bases. |
|
| bulbil |
A small, usually axillary bulb or tuber, usually formed in the axil of a leaf or replacing flowers in an inflorescence, and functioning to propagate the plant vegetatively. |
|
| bulbiliferous |
With bulbils. |
|
| caducous |
Falling off at an early stage. |
|
| caespitose |
Growing in tufts, tufted. |
|
| callosity |
A dot-like or linear structure with incrassate and/or brightly coloured tissue in e.g. leaves or tepals. |
|
| callus |
In Poaceae, the incrassate lowermost part of the lemma, which is sometimes pointed and/or hairy. |
|
| calyptra |
A cap- or hood-like covering that protects the root tip. |
|
| calyx |
Collective term for the sepals of one flower; when the sepals are partly fused the calyx tube is the fused part of the calyx, the calyx lobes the free part of the sepals. |
|
| campanulate |
Bell-shaped. |
|
| canaliculate |
With a longitudinal groove or channel. |
|
| capillary |
Very slender, hair-like; of leaves, finely dissected as in submerged leaves of Ranunculus aquatilis. |
|
| capitate |
Head-like; of an inflorescence with unstalked flowers aggregated into a dense cluster; of a stigma or a gland, globose like the head of a pin. |
|
| capitulum |
An inflorescence with a dense cluster of sessile flowers borne on a flattened or vaulted receptacle, e.g. Asteraceae and Dipsacaceae. |
inflorescences |
| capsule |
A dry, dehiscent fruit derived from two or more united carpels. |
|
| carnose |
Synonymous with succulent. Not used in this Flora. |
|
| carpel |
The ovule-bearing unit having its margins fused together, or fused with those of other carpels to enclose the ovule(s) in an ovary. |
|
| cartilaginous |
Hard and tough, but slightly pliable. |
|
| caryopsis |
A dry indehiscent single-seeded fruit in which the seed coat is closely fused to the fruit wall, characteristic of Poaceae. |
|
| catkin |
A spike of more or less reduced flowers (often unisexual and without perianth); in the strict sense pendent and flexible. |
inflorescences |
| caudate |
Having a long tail-like tip or appendage. |
leaf top |
| caudicle |
A thread to which a pollen mass is attached (in the Orchidaceae and Asclepiadaceae). |
|
| cauliflorous |
Of plants with flowers and fruits borne on old wood. |
|
| cauline |
Borne on the stem. |
|
| ceratophyllid |
A plant which is free-floating in the water or lying on the bottom, but not rooted, e.g. Ceratophyllum. |
|
| chamaephyte |
A plant with winterbuds above ground, but below 25 cm. |
|
| chartaceous |
Having a papery consistency. Not used in this Flora. |
|
| chasmogamous |
Of flowers which open, thus giving possibilities for cross-pollination. |
|
| chlorotic |
Applied to a plant appearing pale green or yellow due to abnormally low chlorophyll content caused by deficiency or disease.. |
|
| choripetalous |
With the petals free from each other. |
|
| chorology |
The study of the geographical distribution of organisms. |
|
| ciliate |
With regularly arranged fine, more or less patent hairs along the margin, like the hairs of an eyelash. |
|
| circinate |
Spirally coiled like the head of a crozier, as developing leaves of ferns; spirally rolled from apex to base, when applied to arrangement of parts in the bud. |
|
| circumscissile |
Of capsules, opening with a circular split around the top, cutting off a cap or lid. |
|
| cirrhose |
Tendrilled, ending in a slender appendage that is wavy or spirally rolled up. |
|
| cladode |
A stem with the form and function of a leaf (same as phylloclade and cladophyll), as in Asparagus and Cytisus. |
|
| cladophyll |
Not used in this Flora. |
|
| clasping |
Grasping, embracing. |
|
| clathrate |
With regular slots or holes, resembling a lattice. |
|
| claw |
The narrow, stalk-like proximal part of a petal, sepal or bract. |
|
| clavate |
Club-shaped, slender at base and distally gradually thickened. |
|
| cleistogamous |
Of flowers which do not open but become self-pollinated in the bud stage. |
|
| climber |
Growing more or less erect by winding or climbing with roots, hooks or tendrils, using other objects as support. |
|
| clonal |
Forming stands of genetically identical individuals by vegetative reproduction. |
|
| clone |
Genetically identical individuals, produced asexually from one parent. |
|
| cochlear |
Of the arrangement of petals in a bud, a variant of imbricate where one petal, being larger than the others, and hollowed like a helmet, covers all the others. |
|
| cochleariform |
Concave like a spoon, spoon-like. Not used in this Flora. |
|
| cochleate |
Coiled like a snail-shell. |
|
| colliculate |
Of seed coat, covered with small rounded or hillock-like elevations. |
|
| colpate |
Of a pollen grain, having elongated apertures in the wall. |
|
| colporate |
Of a pollen grain, having apertures which are elongated at the outer surface of the pollen wall, but roundish at its inner surface. |
|
| column |
A structure formed by the union of the staminal filaments and the style in the Orchidaceae. |
|
| columnar |
Column-like. |
|
| commissure |
A seam, the line along which two organs are fused or adhere, e.g. the interfacing of two carpels in an ovary, and the scarious areas uniting the calyx lobes in some Caryophyllaceae. |
|
| complex |
An assemblage of closely related taxa which may be difficult to define or are very. Variable |
|
| compound |
The opposite of simple, composed of two or more units; of a leaf, divided right to the rachis into distinct leaflets; of an inflorescence, when the same pattern of branching is repeated twice or more times e.g. compound umbel. |
|
| compressed |
Flattened, usually laterally, bringing the sides closer together as the pod of a pea. |
|
| cone |
A more or less compact structure of sporophylls spirally arranged along a central axis, woody in Pinaceae. Also applied to conelike infructescences in some flowering plants. |
|
| cone scale |
The ovuliferous scale and its bract fused together in the Cupressaceae. |
|
| confluent |
The running together of two parts into one, blending. |
|
| connate |
Fused to another organ or other organs of the same kind, e.g. petals connate. |
|
| connective |
The part of the anther connecting the pollen-containing thecae. |
|
| connivent |
Converging or coming into contact, but not actually fused or united. |
|
| conoidal |
Almost cone-shaped. |
|
| contiguous |
Touching at the edges with no gap between. |
|
| contorted |
Spirally twisted; of floral parts in a bud, a form of imbricate arrangement in which each segment with one edge overlapping the adjacent segment. |
|
| contracted |
Drawn together to become shorter or narrower. |
|
| convolute |
Rolled up longitudinally. |
|
| cordate |
Of leaf base, having two equal more or less rounded lobes at base. |
leaf base |
| cordiform |
Shaped like a heart, in outline. |
|
| coriaceous |
Of a leathery texture |
|
| corm |
A short, solid, swollen, usually underground stem or stem base. |
|
| corolla |
Collective term for the petals of a flower; when the petals are partly fused, the tube is the fused part of the corolla, the lobes are the free part of the petals. |
|
| corona |
A ring of tissue arising from the corolla, perianth or filaments of a flower. |
|
| coronal scales |
Flaps (usually two) at the base of the petal limb in some Caryophyllaceae, e.g. Lychnis, Viscaria. |
|
| corymb |
A racemose inflorescence in which the lower flowers have longer pedicels than those of the flowers above, producing a flat-topped or slightly vaulted inflorescence. |
inflorescences |
| corymbose |
Having flowers in corymbs. The term is sometimes used of a corymb-like inflorescence. Ambiguous term, not used in this Flora. |
|
| costa |
The midrib or rachis of a pinna. |
division of leaves |
| costule |
In ferns, the midrib or rachis of a pinnule. |
division of leaves |
| cotyledon |
The primary leaves of an embryo or a seedling, 1 in monocotyledons, usually 2 in dicotyledons, 2- to several in gymnosperms; usually quite different in appearance from subsequent leaves. |
|
| crenate |
Of the margin of a flat organ, with rounded teeth. |
margin |
| crenulate |
Of the margin of a flat organ, with small, rounded teeth. |
|
| crested |
With an elevated, irregular ridge, resembling the crest of a helmet; chiefly applied to seeds and to appendages of the anthers . |
|
| crimson |
A deep red colour, only slightly purplish. |
|
| crispate |
Curly, wavy or crinkled. |
|
| cross fertilization |
Fertilization of ovules by pollen from a genetically different individual. |
|
| cross pollination |
The transfer of pollen from the anthers of one individual to the stigma of a different individual of the same species. |
|
| crown |
The part of a tree above the level of the lowest branch. |
|
| crozier |
A bishop's stick; used of the young coiled leaf in many ferns. |
|
| crustaceous |
Hard, thin and brittle. |
|
| cryptogam |
A plant that produces spores, not seeds. Among vascular plants, the ferns and fern allies. |
|
| cucullate |
Hooded, hood-shaped. |
|
| culm |
The stem of Poaceae, Cyperaceae and Juncaceae. |
|
| cuneate |
Wedge-shaped (with straight, converging sides). |
leaf base |
| cupule |
A small cup; in Fagaceae, a cup-shaped, hardened structure enclosing one or a few fruits. |
|
| cuspidate |
Abruptly tapering into a sharp, rigid point. |
leaf top |
| cylindrical |
Like a cylinder, i.e. long and narrow with a circular cross-section |
|
| cymbiform |
Boat-shaped, synonymous with navicular. Not used in this Flora.. |
|
| cyme |
An inflorescence, or part of an inflorescence, in which each flower terminates a growing axis, and where further flowers are formed on branches arising below it. |
inflorescences |
| cymose |
Of an inflorescence, ending in a flower or an aborted floral bud. |
inflorescences |
| cypsela |
A small, dry, indehiscent single-seeded fruit formed from an inferior ovary, characteristic of Asteraceae. |
|
| cystolith |
An outgrowth from the cell wall, encrusted with calcium carbonate. |
|
| decaploid |
Having 10 of the basic sets of chromosomes. |
|
| deciduous |
Not persistent, falling seasonally; of leaves, falling in the autumn. |
|
| decumbent |
Reclining on the ground but with the tip turning up. |
|
| decurrent |
Extending downwards; of a lateral organ, having its base prolonged down the main axis, e.g. when a leaf continues along the stem as a flange. |
|
| decussate |
Of opposite leaves, when the successive pairs are at right angles to each other. |
arrangement |
| deflexed |
Bent sharply downwards. |
|
| dehiscent |
Opening naturally at maturity to release seeds, spores or pollen. |
|
| deltoid |
Pyramid-shaped. |
|
| dendroid |
Tree-shaped, resembling a tree in form but not in size, e.g. dendroid hairs. |
|
| dentate |
Toothed, with the teeth directed outwards. |
margin |
| denticulate |
Minutely toothed. |
|
| depauperate |
Starved or reduced; refers to plants less well developed than in normally grown ones. |
|
| depressed |
Flattened, somewhat sunken in the centre. |
|
| descending |
Having a direction gradually downwards. |
|
| determinate |
Of growth or branching, with a bud or flower terminating the growth of the main axis; of an inflorescence, ending in a flower or an aborted floral bud, e.g. cyme, panicle. |
|
| diadelphous |
Having the stamens united into two groups, or one free, the others united (in Fabaceae). |
|
| dichasium |
A cyme with two branches from each node. |
cymose |
| dichogamy |
Separation in time between pollen presentation from anthers and pollen reception on to stigmas within the flower. A dichogamous species may be protandrous or protogynous. |
|
| dichotomous |
Branching by forking into two equal branches. |
|
| dicotyledon |
A flowering plant whose seedling has two cotyledons. |
|
| digitate |
Of a compound leaf, when the leaflets diverge from the same point like the fingers of a hand. |
leaf shapes 2 |
| dilated |
Expanded, widened. |
|
| dimorphic |
With two different forms. |
|
| dioecious |
Having male and female flowers on separate plants. |
|
| diploid |
Having two of the basic sets of chromosomes in the nucleus. |
|
| disc |
Anything disc-shaped, e.g.. the top of the hips in Rosa; a fleshy, usually nectar-secreting ring between whorls of floral parts or borne directly on the ovary; the central part of the capitulum (with tubular flowers) in some Asteraceae (cf. ray flowers). |
|
| disc flowers |
The central tubular flowers of some Asteraceae, cf. ray flowers. |
|
| discoid |
Like a disc or plate; in Asteraceae, applied to a head with tubular flowers only. |
|
| dissected |
Divided into segments. |
|
| distal |
Far from the point of attachment; the distalmost part of a leaf is the tip. |
|
| distichous |
Two-ranked; regularly arranged one above the other in two opposite rows, one on each side of the stem. |
arrangement |
| dithecal |
Of anthers, with two thecae (and thus four pollen sacs). |
|
| diurnal |
Of flowers, opening only during daylight. |
|
| divaricate |
Widely spreading, dividing into widely divergent branches. |
|
| divergent |
Of two or more like structures, spreading so that the apices are further apart then their bases. |
|
| dormancy |
A resting phase with reduced metabolism found in buds, seeds and spores. |
|
| dorsifixed |
Attached at or by the back; of anthers, when the filament is attached to the abaxial side of the anther. |
|
| dorsiventral |
Having structurally different upper and lower surfaces. |
|
| doubly dentate |
Dentate with small teeth on the large ones. |
|
| doubly serrate |
Toothed with small teeth on the large ones. |
Margin |
| drooping |
Slightly hanging, so that the apex is directed towards the the horizon. |
|
| drupaceous |
Drupe-like but not strictly a drupe; ambiguous term, not used in this Flora. |
|
| drupe |
A juicy, indehiscent fruit with one or a few seeds, each surrounded by a stony layer formed from the fruit wall, e.g. Prunus. |
|
| duplicato-dentate |
Doubly dentate, i.e. with toothed teeth; not used in this Flora. |
|
| dwarf-shrub |
Small shrub, a small and woody perennial plant, up to 100 cm tall, with many stems or branching at the base. |
|
| e- |
From, out of. |
|
| e-, ex- |
Without, lacking. |
|
| ebracteate |
Without bracts. |
|
|
Spinose, bearing numerous spines, prickles or stiff hairs. |
|
| ecotype |
A genetically fixed variant of a taxon particularly adapted to some environmental condition. |
|
| ectotrophic mycorrhiza |
Mycorrhiza, with the fungus forming a layer outside the root. |
|
| eglandular |
Without glands. |
|
| elaiosome |
An oil-rich appendage or distinct swelling of a seed or fruit, serving as food for ants and hence an aid to dispersal by these. |
|
| elater |
In Equisetum, hygroscopic bands attached to the spore and serving for dispersal (there are usually four elaters on each spore). |
|
| electrophoresis |
Technique for separating molecules of different sizes and charges (especially isozymes). |
|
| ellipsoid |
A solid shape elliptic in side view. |
|
| elliptic |
A flat shape widest at the middle and 1.2-3 times as long as wide. If broader, broadly elliptic, if narrower, narrowly elliptic. |
leaf shapes 1 |
| elodeid |
Long-shoot plants, which is free-floting in the water or laying on the bottom, but not rooted, e.g. Elodea. |
|
| elongated |
Prolonged, extended, notably long. |
|
| emarginate |
With a broad, shallow notch in a truncate apex. |
leaf top |
| embryo |
A young plant contained within the seed. |
|
| enclosed |
Not protruding. |
|
| endocarp |
The innermost layer of the fruit wall; in a drupe the stony layer surrounding the seed. |
|
| endosperm |
The nutritive tissue surrounding the embryo of a seed. |
|
| endotrophic mycorrhiza |
Mycorrhiza, with the fungus living within the roots. |
|
| endozoochorous |
Of a taxon whose seeds are dispersed within animals, i.e. eaten. |
|
| ensiform |
Sword-shaped. |
|
| entire |
Having a smooth margin, not toothed or dissected. |
margin |
| entomophilous |
Insect-pollinated. |
|
| epi- |
upon, on top of or added to. |
|
| epicalyx |
A whorl of bracts just below a flower, calyx-like but outside and additional to the calyx. |
|
| epidermal |
Associated with the epidermis. |
|
| epidermis |
The outermost layer of cells of an organ, usually one cell thick. |
|
| epigeal |
Above ground; of germination, when the cotyledons, which are green and photosynthesizing, are raised above ground. |
|
| epigynous |
Having perianth and stamens inserted above the ovary, i. e., having an inferior ovary. |
|
| epiphyte |
A plant growing on another plant, but not parasitizing it. |
|
| epizoochorous |
Of a taxon whose seeds are dispersed on the outside of animals. |
|
| erect |
Upright, directed strictly upwards. |
|
| erectopatent |
Directed obliquely upwards. |
|
| erose |
Gnawed or bitten; of a margin, finely and irregularly eroded . |
|
| evergreen |
Bearing leaves throughout the year. |
|
| exine |
The outer, very resistant layer of the two-layered wall of a pollen grain; it is often ornamented. |
|
| exocarp |
The outermost layer of the fruit wall. |
|
| exserted |
Protruding, e.g. of stamens protruding from a corolla tube. |
|
| exstipulate |
Without stipules. |
|
| extrafloral |
Of nectaries, which are situated outside the flowers, e.g. on the leaves or stipules. |
|
| extrorse |
Of anthers, opening away from the centre of the flower. |
|
| facial |
At or concerning the face, the exposed or flat side. |
|
| facultative |
Having the ability to utilize certain conditions but not being dependent upon them, or, being able to adopt an alternative strategy or alternative properties, e.g. sexual and apogamic reproduction. |
|
| falcate |
Sickle-shaped. |
leaf shapes 1 |
| farinose |
Mealy. |
|
| fascicle |
A close cluster or a bundle of similar organs (usually leaves or flowers) arising from more or less the same point. |
|
| fasciculate |
Clustered, or appearing in bundles. |
|
| fastigiate |
With erect, parallel and clustered branches, giving the plant a narrow outline. |
|
| fertile |
Producing seed or spores capable of germination; of anthers, containing viable pollen. |
|
| fertilization |
The union of male and female gametes. |
|
| fibrous |
Composed of or consisting of loosely arranged woody fibres. |
|
| fibrous roots |
A root system in which there is no main axis, as in the monocotyledons. |
|
| filament |
A thread; the stalk of a stamen, bearing the anther. |
|
| filiform |
Threadlike, slender and elongated. |
leaf shapes 1 |
| fimbriate |
Fringed. |
|
| fissured |
With a coarse, uneven surface, applied to the bark of a stem or trunk. |
|
| fistulose |
Cylindrical and hollow; tube-like. |
|
| flaccid |
Limp, unable to support its own weight. |
|
| flexible |
Pliable. |
|
| flexuous |
Of a stem or hair, wavy. |
|
| floccose |
Covered with soft hairs which tend to adhere in small tufts. |
|
| floriferous |
Bearing flowers. |
|
| flower |
The reproductive unit in angiosperms, typically consisting of gynoecium, androecium and perianth. |
|
| foliaceous |
Leaf-like, having the shape or texture of a leaf. |
|
| follicle |
A dry, usually many-seeded fruit developed from one carpel and dehiscing along the line of fusion. In many Ranunculaceae. |
|
| foveate |
Pitted. |
|
| foveolate |
Minutely pitted, with small depressions. |
|
| free |
When applied to floral organs: not fused. |
|
| free-central |
Of a placenta, with the ovules borne on a free-standing central placenta within the ovary. |
placentation |
| frond |
A large, divided leaf. Not used in the Flora. |
|
| fruit |
Strictly, the ripe, fertilized ovary and its seeds, but usually also comprising false fruits, which are formed also from other floral parts, e.g. bracts or receptacle. |
|
| fruticose |
Shrub-like (woody). |
|
| funicle |
The stalk of an ovule. |
|
| fusiform |
Spindle-shaped, a body thickest at the middle and tapering towards the ends. |
|
| gamete |
A spezialized reproductive cell (usually haploid) which in sexual reproduction fuses with another of the opposite sex, to give the zygote which develops to the embryo. |
|
| gametophyte |
The haploid plant generation that bears the sexual organs; in pteridophytes an independently living organism (the prothallium), in spermatophytes the pollen grains (male) and the embryo-sac (female). |
|
| gamo- |
Union of like parts. |
|
| geitonogamy |
Fertilization of ovules by pollen from a different flower on the same plant. |
|
| gemma |
Synonymous with bulbil. Not used in this Flora. |
|
| gemmiferous |
With bulbils. Not used in this Flora. |
|
| geniculate |
Abruptly bent like a knee. |
|
| genome |
A complete chromosome set; a diploid has two genomes. |
|
| genotype |
The total set of genes in an individual. |
|
| genus |
A group of species which are fairly closely related; genera which are relatively closely related form a family. |
|
| geophyte |
A plant with subterranean winter buds (i.e. surviving the unfavourable season by rhizomes, bulbs, corms or tubers), usually flowering in early spring. |
|
| gibbous |
With a rounded pouch-like swelling on one side, as in the calyx of Satureja acinos. |
|
| glabrous |
Without hairs. |
|
| gland |
A multicellular secretory structure, usually round, on or within the surface of an organ. When raised on a stalk usually called a glandular hair. |
|
| glandular |
Bearing glands; functioning as a gland. |
|
| glandular hair |
A trichome having a head composed of secretory cells borne on a stalk. |
|
| globose |
Spherical. |
|
| glomerule |
A small compact cluster, e.g. of flowers. |
|
| glumaceous |
Glume-like. Not used in this Flora. |
|
| glume |
One of the paired bracts at the base of a grass spikelet. |
|
| granulose |
With a sand-like surface structure. |
|
| group |
Any recognizable non-formal assemblage of taxa, usually understood in a wider sense than aggregate or complex. |
|
| gymnosperm |
A seed-bearing plant with ovules, and hence seeds, developing on the surface of a leaf. |
|
| gynobasic |
A style which, because of the infolding of the ovary wall, appears to be inserted at the base of the ovary, as in Lamiaceae. |
|
| gynodioecious |
Having female and bisexual flowers, but on separate plants. |
|
| gynoecium |
The female parts of a flower; the carpels. |
|
| gynomonoecious |
Having bisexual and female flowers on the same plant. |
|
| gynophore |
A stalk bearing the gynoecium above the level of insertion of the other floral parts, as in Silene. |
|
| gynostegium |
A structure formed from the fusion of the anthers with the stigmatic region of the gynoecium, as in the Asclepiadaceae. |
|
| gynostemium |
In Orchidaceae, synonymous with column. Not used in this Flora. |
|
| habit |
The general appearance of a plant. |
|
| habitat |
The environment in which a plant lives. |
|
| halophyte |
A plant adapted to living in saline habitats. |
|
| hamate |
Barbed or hooked at the apex. |
|
| hapaxanthous |
A plant bearing fruit but once and then dying; either annual, biennial or requiring several or many years to reach the flowering and fruiting state. |
|
| haploid |
Having a single set of chromosomes. |
|
| hastate |
Of the base of a flat organ, spear-shaped; of a leaf blade, narrow with two basal lobes directed outwards. |
leaf base |
| head |
A racemose inflorescence with unstalked flowers aggregated in a dense cluster. |
inflorescences |
| helicoid |
Coiled. |
|
| helicoid cyme |
A monochasium where the branching takes place repeatedly to the same side. |
inflorescences |
| helophyte |
A water or swamp plant protruding above the water surface, but with submerged winter buds. |
|
| hemi- |
Half-. |
|
| hemicryptophyte |
A plant with winter buds close to the ground-level. |
|
| herb |
A plant dying down to ground-level each year. |
|
| herbaceous |
Not woody; soft and green, having the texture of a herb. |
|
| herkogamy |
Separation in space between anthers and stigmas within the flower. |
|
| hermaphroditic |
Bisexual. Not used in this Flora. |
|
| hetero- |
Different, other, uneven. |
|
| heteroblastic |
Having progressive change in form and size of successive organs (especially leaves), e.g. difference in leaf shape between the juvenile and adult states. |
|
| heterophyllous |
Having leaves of two or more distinct forms, often differing in shape and function, e.g. broad-leaved floating leaves and capillary submerged leaves, as in Ranunculus aquatilis. |
|
| heterosporous |
Having two kinds of spores (megaspores, female; and microspores, male) as in all spermatophytes and a few pteridophytes. |
|
| hexaploid |
Having 6 basic sets of chromosomes. |
|
| hilum |
The scar on a seed indicating its point of attachment. |
|
| hirsute |
With long, coarse, rough hairs. |
|
| hispid |
With bristles or stiff, bristly hairs. |
|
| holotype |
A single specimen or illustration designated by the author of a plant name, at the time of original publication, which fixes the application of the name. |
|
| homo- |
like, of the same kind |
|
| homogamous |
With coincidence of anther dehiscence and stigma receptivity within a flower; also applied to a plant with only one kind of flowers in the cluster. |
|
| homologous |
Having the same phylogenetic origin but not necessarily the same structure or function. |
|
| homosporous |
Having spores all of one kind only, as most pteridophytes. |
|
| homostylous |
Not heterostylous. |
|
| hooded |
With a hollow, arched covering, as the upper petal in Aconitum. |
|
| hyaline |
Colourless and transparent. |
|
| hydrochorous |
Dispersed by water. |
|
| hydrophilous |
Pollinated in water. |
|
| hydrophyte |
A submerged or floating aquatic plant with winter buds at the bottom. |
|
| hypanthium |
A tubular or cup-shaped extension of the receptacle, bearing floral parts above the base (and often above the top) of the ovary of a flower, in perigynous and epigynous flowers. |
|
| hypo- |
Below, under, beneath |
|
| hypodermal |
relating to the hypodermis. |
|
| hypodermis |
A morphologically distinct layer of cells immediately beneath the epidermis, often containing large amounts of sclerenchymatous cells strengthening the tissue. |
|
| hypogeal |
Subterranean; of germination, when the cotyledons, which are thick and contain reserve materials, remain within the seed coat below the ground, e.g. Vicia, Quercus. |
|
| hypogynous |
Having perianth and stamens inserted at the base of the ovary, i. e., ovary superior. |
|
| imbricate |
Overlapping like tiles on a roof. |
|
| imparipinnate |
Pinnate with an unpaired terminal leaflet. |
leaf shapes 2 |
| inbreeding |
The production of offspring by self-fertilization or from fertilization among genetically closely related parents. |
|
| incised |
Cut sharply, deeply and often irregularly. |
leaf shapes 2 |
| inclining |
Bending downwards. |
|
| incrassate |
Thickened or swollen. |
|
| indehiscent |
Without opening mechanism to release seeds or spores. |
|
| indumentum |
The covering of hairs (or other epidermal appendages, e.g. scales) of a plant. |
|
| induplicate |
Of petals and sepals, folded inwards and with the outsides touching the neighbours. |
|
| indusium |
A thin scale covering a group of sporangia in many ferns. |
|
| inferior |
Of an ovary, at least partly below the level of attachment of the other floral parts. |
|
| inflated |
Swollen or expanded; bladdery. |
|
| inflexed |
Bent sharply inwards. |
|
| inflorescence |
A group of flowers with their branches, bracts and bracteoles. |
inflorescences |
| infraspecific |
Of lower taxonomic rank than species. |
|
| infructescence |
A group of fruits in a plant, usually derived from an inflorescence. |
|
| inserted |
Attached to or arising from, e.g. stamens inserted on corolla. |
|
| integument |
One or two outer protective layers of an ovule, developing into the seed-coat. |
|
| internode |
The portion of a stem between two successive leaves or leaf pairs, or between flowers of an inflorescence.. |
|
| interrupted |
Of an inflorescence, with the flowers unevenly distributed along the axis, with large gaps. |
|
| interruptedly pinnate |
With alternating large and small leaflets. |
|
| intine |
The inner layer of the two-layered wall of a pollen grain. |
|
| introgression |
The incorporation of genes from one species into the gene pool of another species by hybridization followed by backcrossing. |
|
| introrse |
Of anthers, opening towards the centre of the flower. |
|
| involucre |
A whorl of bracts subtending a flower or flower cluster; the calyx-like structure at the base of a capitulum, as in the Asteraceae. |
|
| involute |
Rolled inwards; of a leaf, with the margins rolled towards the adaxial (upper) surface. |
margin |
| irregular |
Having no plane of symmetry. Synonymous with asymmetric. |
|
| isoëtid |
A submerged plant, rooted at the bottom, with leaves in a rosette. |
|
| isomerous |
Having an equal number of parts in whorls of different kinds, as in a flower with an equal number of members of each floral whorl. |
|
| isotype |
A specimen which is a duplicate of the holotype, i.e. part of the same collection. |
|
| juvenile |
Applied to youth forms, e.g. leaves formed on a young or coppiced plant which are different in shape from the adult leaves. |
|
| karyotype |
The characteristics of all the the chromosomes within the nucleus, especially their size, shape and number. |
|
| keel |
A prominent longitudinal ridge, like the keel of a boat; in Fabaceae, a boat-shaped structure, formed byf the two anterior (lower) united petals of a flower. |
|
| keeled |
Ridged, like the keel of a boat. |
|
| labellum |
A lip; a morphologically distinct median petal of an orchid flower. |
|
| labiate |
Lipped; a tubular corolla which in its upper end is expanded into one or (usually) two lips. |
|
| lacerate |
Deeply and irregularly cut, appearing as if torn. |
leaf shapes 2 |
| lacinia |
A segment of a laciniately divided organ. |
|
| laciniate |
Slashed into narrow, pointed lobes. |
leaf shapes 2 |
| lamina |
The blade of a leaf or petal. Not used in this Flora. |
|
| lanate |
Woolly, covered with long, curled and densely matted hairs |
|
| lanceolate |
Lance-shaped; narrow and tapering at both ends, c. 3 times as long as wide, widest below the middle. |
leaf shapes 1 |
| lateral roots |
Roots arising from the main root. |
|
| latex |
Milky fluid, usually whitish. |
|
| lax |
Loose arrangement; opposite to dense. |
|
| leaf |
An expanded, usually photosynthetic organ of a plant. |
|
| leaflet |
Each unit of a compound leaf. |
|
| lectotype |
A specimen selected from among those cited with the original description to serve in place of a holotype where the holotype is missing or destroyed, or where no holotype was designated. |
|
| legume |
A fruit type in Fabaceae; a synonyme to pod, not used in this Flora. |
|
| lemma |
In a grass floret, the lower of the two bracts enclosing the flower. |
|
| lemnid |
An aquatic plant which is floating on the surface of the water and not rooted at the bottom; as Lemna. |
|
| lenticular |
Lens-shaped, biconvex and +- circular in outline. |
|
| liana |
A climbing, woody plant. |
|
| ligulate |
With a ligule; strap-shaped. In Asteraceae, applied to a head with ligulate flowers only. |
|
| ligule |
A strap-shaped structure; the flattened part of the ray corolla in the Asteraceae; a membrane or a fringe of hairs between the sheath and the blade of a leaf, especially in grasses; a small adaxial membranous appendage near the leaf-base in some pteridophytes. |
attachment |
| limb |
The expanded part of a petal or tepal; the expanded part of a sympetalous corolla, as distinct from the tube. |
|
| linear |
Long and narrow with +- parallel sides; in the strict sense with a length/width ratio of about 12:1. |
leaf shapes 1 |
| lingulate |
Tongue-shaped. |
|
| lip |
One of the two segments of a two-lipped corolla or calyx; one of the tepals of an orchid flower. |
|
| lobe |
A division of an organ, as of a leaf. |
|
| lobed |
Partly divided into a few, broad, and mostly determinate number of segments, e.g. two-lobed, three-lobed etc. |
|
| loculicidal |
Applied to a capsule opening along the midrib of each carpel. |
|
| lomentum |
A pod, which at maturity breaks transversally into one-seeded segments. |
|
| longistylous |
Long-styled; of plants or flowers having long styles and short stamens, used in heterostylous taxa. |
|
| long-shoot |
A shoot with long internodes and of potentionally unlimited growth, especially in trees and shrubs. |
|
| lyrate |
Deeply lobed, with a large terminal lobe and smaller lateral lobes. |
leaf shapes 2 |
| lyrato- |
As prefix to terms describing leaf shapes means the occurrence of a large terminal lobe. |
|
| macro- |
Large. |
|
| magenta |
A dark purplish-red colour. |
|
| marcescent |
Withering without falling off, as the sepals and petals in some flowers or the leaves at the base of some plants. |
|
| marginal |
At or very close to a margin; of a placenta, having the ovules attached on the fused margins of the carpel, i.e. along the suture. |
placentation |
| massula |
An aggregation of pollen or spores. |
|
| mauve |
A pale purple colour. |
|
| medifixed |
Attached at or by the middle; of anthers, when the filament is attached near the middle. |
|
| mega- |
Large. |
|
| megaspore |
In a heterosporous plant, the female spores that give rise to female gametophytes. |
|
| meiosis |
A special form of cell division (in sporangia, pollen-sacs or ovules) in which the daughter cells receive the haploid number of chromosomes. |
|
| membranous |
Like a membrane in consistency; thin, soft, flexible, and more or less translucent. |
|
| mericarp |
A one-seeded portion of a many-seeded fruit that breaks at maturity into units, as in the Geraniaceae, Apiaceae, Boraginaceae, Malvaceae etc. |
|
| -merous |
The number of parts per whorl that characterizes a particular flower, e.g., 5-merous, pentamerous, having five parts. |
|
| meso- |
Middle. |
|
| mesocarp |
The middle layer in a fruit wall, often fleshy, sometimes missing. |
|
| mesostylous |
In species with trimorphic heterostyly: plants or flowers having long and short stamens, and styles intermediate in length. |
|
| micro- |
Small. |
|
| microspore |
In a heterosporous plant, the male spores that give rise to male gametophytes. |
|
| midrib |
The central, and usually the most prominent, vein of a leaf or leaf-like organ. |
|
| mitosis |
A division in which a nucleus gives rise to two daughter nuclei, each identical to the parent nucleus; this procedure is necessary for growth and development. |
|
| monadelphous |
Of stamens, with the filaments united into one bundle. |
|
| mono- |
One-. |
|
| monochasium |
A cyme with one branch from each node. |
cymose |
| monocotyledon |
A flowering plant whose seedlings have only one cotyledon. |
|
| monoecious |
Having male and female flowers on the same plant. |
|
| monolete |
Applied to a spore with a simple scar marking the point of attachment in the tetrad. |
|
| monophyletic |
A group where the members are all descendants of a common ancestor. |
|
| monopodial |
With a persistent terminal growing point. |
|
| monothecal |
With a single cavity or cell; of anthers, with one theca (and thus at most two pollen sacs). |
|
| monotypic |
With only one taxon of the next lower rank, e.g. a family containing only one genus. |
|
| mucro |
A short, distinct, stiff terminal point. |
|
| mucronate |
Ending abruptly in a short, stiff point. |
leaf top |
| multinodal |
With numerous nodes. |
|
| muricate |
Rough to the touch, with short, hard outgrowths of the epidermis. |
|
| muticous |
Pointless, awnless, blunt; used to indicate contrast to pointed. |
|
| mycorrhiza |
A close physical association between a fungus and the roots of a plant from which both seem to benefit. |
|
| myrmecochorous |
Dispersed by ants. Not used in this Flora. |
|
| naked |
Not enclosed; of sporangia, not covered by an indusium; of seeds, exposed on the surface of a sporophyll and not enclosed within an ovary; of flowers, without perianth. |
|
| nanophanerophyte |
A woody plant with winter buds 25-100 cm above the ground. |
|
| navicular |
Boat-shaped. |
|
| nectariferous |
Of an organ secreting nectar, or with nectar-secreting organs. |
|
| nectary |
A nectar-secreting organ. |
|
| neotype |
A specimen selected to serve in place of a holotype, where none of the original material to which the name was originally applied is known to have been preserved. |
|
| nerve |
Synonymous with vein. Not used in this Flora. |
|
| nigrescent |
Ambiguous ("becoming black" or "blackish"); not used in this Flora. |
|
| nocturnal |
Nightly. |
|
| nodding |
Bending very much, so that the apex is directed downwards. |
|
| node |
The position on the stem where leaves, branches and/or flowers are borne. |
|
| nomen conservandum |
A name that has been formally accepted as the correct name contrary to the usual principles of botanical nomenclature. |
|
| nomen illegitimum |
A name which, at the time of its publication, was superfluous because the taxon to which it was applied had already been named, or had already been applied to another plant. |
|
| nomen nudum |
A name published without a diagnosis or description of the entity to which it applies, and without reference. |
|
| nomen rejiciendum |
A name rejected in favour of a nomen conservandum. |
|
| nothomorph |
One of several morphological variants of a particular hybrid. |
|
| nothospecies |
A hybrid between two species, when regarded as a unit and given a binary name. |
|
| nothosubspecies |
A hybrid between two subspecies, when regarded as a distinct unit and given a trinary name. |
|
| nucellus |
The inner part of an ovule, within which the embryo-sac develops. |
|
| nut |
A hard, dry, indehiscent fruit formed from two or more carpels but usually containing a single seed. |
|
| nymphaeid |
A plant which has floating leaves and is rooted at the bottom. |
|
| ob- |
The other way up from normal, usually flattened or widened at the distal rather than proximal end. |
|
| obconical |
Conical but attached at the narrower end. |
|
| obcordate |
Of a leaf, broad and notched at the tip. |
|
| oblate |
Almost circular but wider than long. |
leaf shapes 1 |
| obligate |
Being totally dependent upon certain environmental conditions, or being unable to change strategy |
|
| oblique |
With unequal sides, especially of a leaf base, as in Ulmus; slanting. |
|
| oblong |
A flat shape with middle part +- parallel-sided, 1.2-3x as long as wide. If less, broadly oblong, if more, narrowly oblong. |
leaf shapes 1 |
| obovate |
A flat shape similar in shape to ovate but widest at the distal end and 1.2-3x as long as wide. If less, broadly obovate, if more, narrowly obovate. |
leaf shapes 1 |
| obtuse |
Blunt or rounded at apex. |
leaf top |
| ochrea |
A sheath, encircling the stem as a cylinder from the node upwards, as in the Polygonaceae. |
attachment |
| ochreola |
A structure similar to an ochrea, but encircling axes in the inflorescence, as in the Polygonaceae. |
|
| opaque |
Dull, non-translucent. |
|
| operculum |
A lid, such as the deciduous cap of a circumscissile capsule. |
|
| opposite |
Of leaves, borne at the same level but on opposite sides of the stem; of floral parts, on the same radius. |
|
| orbicular |
A flat shape, circular in outline. |
leafshapes 1 |
| orifice |
The opening, the mouth. |
|
| outbreeding |
The production of offspring from cross fertilization. |
|
| outcrossing |
Deposition of pollen on the stigma of a different plant. |
|
| ovary |
The basal part of the gynoecium containing the ovules. |
|
| ovate |
Egg-shaped (applied to flat objects); widest below the middle and 1.2-2 times as long as wide. If wider, broadly ovate, if narrower, narrowly ovate. |
leaf shapes 1 |
| ovoid |
A solid shape with the form of an egg. |
|
| ovule |
Organ (inside the ovary in Magnoliopsida, naked in Coniferopsida) that contains the embryo-sac, which in turn contains the egg; developing into the seed after fertilization. |
|
| ovuliferous scale |
A structure bearing ovules and becoming woody at seed maturity; applied to scales in the cone in gymnosperms. |
|
| palate |
A projection or raised area on the lower lip of some bilabiate corollas; sometimes, as in Anthirrhinum, it closes the throat completely. |
|
| palea |
In a grass floret, the upper of the two bracts enclosing a flower. |
|
| palmate |
Of a simple leaf with three or more distinct lobes whose veins meet at the base. |
leaf shapes 2 |
| palmatisect |
Palmately divided almost down to the midrib. |
|
| panduriform |
Fiddle-shaped, obovate with a sinus in each side below the middlle. |
leaf shapes 1 |
| panicle |
A compound, much-branched cymose inflorescence. |
inflorescences |
| papery |
Having a papery consistency. |
|
| papilla |
A short, rounded nipple-like bump or projection of an epidermal cell. |
|
| papillose |
Covered with papillae. |
|
| pappus |
Hairs, simple or feathery, or sometimes bristles or scales formed outside the corolla and surrounding the apex of the fruit, in the Asteraceae. |
|
| paraphyletic |
A group of taxa that does not include all the descendants of the most recent common ancestor. |
|
| paraphyses |
Sterile filaments intermingled with sporangia. |
|
| parasite |
An organism living on or in a different organism, and nourishing from it. |
|
| parenchyma |
Unspecialized tissue, often constituting the main part of many organs. |
|
| parietal |
Attached to the margins of a structure; of a placenta, having the ovules attached to placentas on the wall of the ovary. |
placentation |
| paripinnate |
Pinnate without an unpaired terminal leaflet. |
leaf shapes 2 |
| partial inflorescence |
A more or less distinct subunit of an inflorescence. |
|
| -partite |
Divided, almost to the base, into segments. |
|
| patent |
Spreading, projecting more or less at right angles, or expanded. |
|
| pectinate |
Comb-like, with narrow, numerous and close segments arranged like the teeth of a comb. |
|
| pedate |
Palmately lobed but with the lateral lobes themselves divided into smaller segments, the midribs of which do not directly run to the same point as the rest. |
|
| pedicel |
The stalk of the individual flower. |
|
| pedicellate |
Stalked (of flowers). |
|
| peduncle |
The stalk of an inflorescence; in gymnosperms, the stalk which supports the cone. |
|
| pedunculate |
Stalked (of inflorescences). |
|
| peltate |
Shield-shaped; of a flat, more or less circular organ with a central stalk. |
leaf shapes 1 |
| pendent |
Hanging down. |
|
| pentamerous |
Having five parts. |
|
| pentaploid |
Having 5 basic sets of chromosomes. |
|
| perennial |
A plant that lives for more than two years. |
|
| perfoliate |
Of a sessile leaf or bract, having its base completely wrapped around the stem so that the stem appears to pass through the blade. |
attachment |
| perianth |
The calyx and corolla together, usually used when the calyx and corolla are not, or little differentiated. |
|
| perianth segment |
The lobes of a partially fused perianth, especially when sepals and petals cannot be distinguished . |
|
| pericarp |
The fruit wall, developed from the ovary wall. |
|
| perigynous |
Of a flower with a superior ovary but with the calyx, corolla and stamens inserted above the base of the ovary on an extension of the receptacle which is not fused with the ovary. |
|
| periodically serrate |
Serrate, with some teeth, at regular intervals, larger and more prominent than the others. |
margin |
| perisperm |
Nutritive tissue in a seed similar to endosperm but derived from the nucellus. |
|
| perispore |
A membrane or extra outer layer surrounding a spore. |
|
| perpendicular |
Directed straight downwards, or at right angle with some other body. |
|
| persistent |
Remaining attached, not falling off even though the original function of the organ has ceased, e.g. of petals not falling after flowering. |
|
| petal |
One of the segments of the inner whorl(s) of the perianth, usually conspicuously coloured . |
|
| petaloid |
Petal-like; used for brightly coloured sepals, bracts or leaves. |
|
| petiolate |
With a petiole, not sessile. |
attachment |
| petiole |
The stalk of a leaf. |
|
| petiolulate |
With stalked leaflets. |
|
| petiolule |
The stalk of a leaflet. |
|
| phanerogam |
A plant reproducing by seeds. |
|
| phanerophyte |
A woody plant with winter buds at least 25 cm above the ground. |
|
| phenotype |
The physical characteristics of an organism. |
|
| phyllary |
Sepal-like bracts on the outside of the capitulum in Asteraceae, with a gradual transition between innermost and outermost or arranged in distinct inner and outer whorls. |
|
| phylloclade |
Synonymous with cladode. Not used in this Flora. |
|
| phyllode |
A leaf with an expanded, leaf-like petiole but lacking a true blade. |
|
| phylogeny |
The relationships of a group as reflected by their evolutionary history, i.e. the lines of descent of the group members from their ancestors. |
|
| pilose |
Hairy, covered with weak, soft hairs. |
|
| pinna |
The primary division of a compound leaf; a pinna may be further subdivided into pinnules. |
leaf shapes 2 |
| pinnate |
Divided into pinnae. |
leaf shapes 2 |
| pinnatifid |
Of a leaf cut deeply into lobes, but by far not to the midrib. |
leaf shapes 2 |
| pinnatisect |
Pinnately dissected to the midrib but having the segments confluent with it. |
leaf shapes 2 |
| pinnule |
A division, or leaflet of a pinna; a pinnule may be further subdivided into tertiary segments. |
leaf shapes 2 |
| pistil |
The female organ of a flower, formed by a single carpel or a group of fused carpels. |
|
| pistillate |
Female (of flowers). |
|
| pistillode |
A sterile pistil, often rudimentary. |
|
| pith |
The spongy, parenchymatous central tissue in some stems and roots. |
|
| placenta |
The part within an ovary, to which the ovules are attached. |
|
| placentation |
The arrangement of placentas, and hence of ovules, within an ovary. |
placentation |
| plastic |
Varying in form according to environmental conditions, not according to genetic characteristics. |
|
| pleiochasium |
A cyme with more than two branches from each node. |
|
| pleiotropy |
The ability of a gene to influence more than one phenotypic attribute. |
|
| plicate |
Folded. |
|
| plumose |
Like a feather; with fine hairs branching from a central axis. |
|
| plurilocular |
Hollow, with more than two rooms. |
|
| pod |
A fruit type in Fabaceae, formed from a single carpel and splitting into two valves. |
|
| pollen |
The powdery mass of microspores shed from the anthers of seed plants. |
|
| pollinarium |
In Asclepiadaceae; the pollen grains from two adjacent anther-lobes (thecae) are united to a coherent mass for dispersal as a unit in pollination. |
|
| pollinium |
In orchids, a coherent mass of pollen grains from one anther-lobe (theca) transferred as a unit in pollination. |
|
| poly- |
Many. |
|
| polychronic |
Arising parallel at more than one occasion, from parents of the same species. |
|
| polygamous |
With both bisexual and unisexual flowers on the same plant. |
|
| polymorphic |
With more than two distinct morphological variants. |
|
| polyphyletic |
A group where the members originated, independently, from more than one evolutionary line. |
|
| polyploid |
Having three or more basic chromosome sets, e.g. 3 (triploid), 4 (tetraploid), 5 (pentaploid), 6 (hexaploid), 7 (heptaploid), 8 (octoploid), 9 (nonaploid), 10 (decaploid) etc. |
|
| polytopic |
Arising parallel in more than one place, from parents of the same species. |
|
| porate |
Of a pollen grain, with rounded apertures. |
|
| post- |
After, behind. |
|
| posterior |
At the back; on the side toward the axis, as the upper lip of a bilabiate corolla. |
|
| precocious |
Flowering or fruiting before the normal season. |
|
| premorse |
Terminating abruptly in an uneven end, as if bitten off. |
leaf top |
| prickle |
A tough, broad-based, sharp-pointed outgrowth from the epidermis, as in Rosa. |
|
| pro parte |
Partly, in part. |
|
| process |
An outgrowth or appendage, or something which is going on; not used as a morphological term in this Flora. |
|
| procumbent |
Trailing or spreading along the ground. |
|
| propagule |
A structure with the capacity to give rise to a new plant, e.g. a seed, a spore, part of the vegetative body capable of in |