Taxon  Report   4617 
Lathyrus palustris  L.
Marsh pea
Lathyrus palustris
© 2015 Aaron Arthur
More photos from
CalPhotos / Calflora
Lathyrus palustris
© 2015 Aaron Arthur
Lathyrus palustris, a dicot, is a perennial herb that is native to California, is also found elsewhere in North America and beyond.
CNPS Rare Plant Rank: 2B.2 (rare, threatened, or endangered in CA; common elsewhere).   8th Edition

Interactive Distribution Map

Observation Hotline
(observation details + photos)

point, line, or polygon

one or more occurrences
within a 7.5-minute quadrangle

Plant Characteristics
and Associations

Bloom Period
Lathyrus palustris
© 2008 Jennifer L. Kalt
Family: FABACEAE  
Genus: Lathyrus
Coastal Prairie, Yellow Pine Forest, Northern Coastal Scrub, North Coastal Coniferous Forest, Freshwater Wetlands, wetland-riparian
Habitat: freshwater-marsh, bogs/fens
Wetlands: Occurs in wetlands
Distribution by County 

Add an Observation of  Lathyrus palustris

Name Status:
Accepted by JEF + CNPS + PLANTS + JM93
Alternate Names:
(according to)

PLANTS: Lathyrus myrtifolius
PLANTS: Lathyrus palustris ssp. pilosus
PLANTS: Lathyrus palustris var. linearifolius
PLANTS: Lathyrus palustris var. macranthus
PLANTS: Lathyrus palustris var. meridionalis
PLANTS: Lathyrus palustris var. myrtifolius
PLANTS: Lathyrus palustris var. pilosus
PLANTS: Lathyrus palustris var. retusus
PLANTS: Orobus myrtifolius
More information about  Lathyrus palustris
Nursery / seed vendor availability from CNPLX
Commercial availability unknown.
Landscaping information from Calscape
Photos on CalPhotos / Google Images
Photos on

Jepson eFlora

Records from the Consortium of California Herbaria

ITIS Original Publication citation


Search the International Plants Names Index

Search (Flora of North America)

Search the Lady Bird Johnson Wildflower Center

website references from Google

Suggested Citation
Calflora: Information on California plants for education, research and conservation,
with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria.
[web application]. 2018. Berkeley, California: The Calflora Database [a non-profit organization].
Available:   (Accessed: Aug 19, 2018).

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