Abstract

Halvorsen, R. & Grøstad, T. 1998. Er strandkarse Lepidium latifolium L. ei ballastplante i Norge? Tre nye funn av strandkarse i Vestfold og Østfold. Blyttia 56:126-131.
Is Lepidium latifolium L. a ballast plant in Norway? Three new finds of L. latifolium in Vestfold and Østfold counties, SE Norway.

Dittander Lepidium latifolium is a recently established species in Norway, occurring both in seashore meadows and in ruderal vegetation. Three new localities from SE Norway are reported. Previous works suggest that the species may have been dispersed to at least some of the Norwegian localities by sea currents from populations in Denmark or southern Sweden. The authors, however, argue that the most plausible explanation is an original introduction by ballast soil independently to its main areas in Norway, followed in some cases by dispersal by sea water on a local scale.

Roger Halvorsen, Safirvn. 41, 3931 Porsgrunn. Trond Grøstad, Eikelundvn. 8, 3290 Stavern.

Blyttia 56(2)
Blyttias hjemmeside
Lagt ut 26.1.1999 Jan Wesenberg