Ludwigia palustris - geographical information

last updated 2008-11-20

Added by Thomas Karlsson

Sweden

Halland
Östra Karup (Hemmeslöv) c. 1780 (shore of stream, probably spontaneous although ephemeral; Osbeck 1788)
”Isnarda palustris. Häraf har jag för några år sedan tagit et och annat stånd uti Åen, vid Hemmeslöf i Karups soken.” (Osbeck 1788).
A historical specimen in S, labeled ”Isnardia palustris. Dr. Osbeck” in Andreas Dahl’s handwriting, is in all likelihood collected by Osbeck and may be a voucher for the literary record. The determination was verified as L. palustris by C.-I. Peng 1981.
ENILXY (if actually regarded as spontaneous/native it should really be ENSLXY or EOSLXY, the latter more correct if it is suspected to have tried to invade now and then during the centuries... No map, so only interesting, no consequences.)

Göteborg & Bohuslän
Kville: Mörhult, on ballast from S Europe, June 1910, together with other foreign species (Almqvist 1914). No voucher is known.
ENALXY

Almqvist, E. [Emil!] 1914: Främmande växter på svensk mark. Svensk Bot. Tidskr. 8: 393.
Osbeck, P. 1788: Utkast til Flora Hallandica. Kongl. Götheborgska Wetenskaps och Witterhets Samhällets Handl., Wetenskaps Afd., Fjerde stycket: 3–34.