Lathyrus palustris. Marsh pea.

Life-form & Growth Form:

 Hemicryptophyte/geophyte. Herbaceous perennial. Rhizomatous, rhizome far-creeping.  

Flowering period: 

June and July.

Habitats: 

Base-rich fens, reed- beds and fen-meadows. Rank marshy vegetation. More rarely found on marshy ground close to rivers. Lowland. 

Threats:

Habitat loss and fragmentation through drainage of marshy grassland and fen. Overgrazing and excessive poaching by livestock. Historic lowering of Lough Neagh water levels. Under-grazing results in shading out by taller wetland vegetation and wet woodland. Eutrophication results in rank growth which shades out L. palustris

Static distribution map:
Lathyrus palustris
Lathyrus palustris
For an interactive map follow this link to the BSBI webpage