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Jepson's Pea
Lathyrus jepsonii
About Jepson's Pea (Lathyrus jepsonii) 0 Nurseries Carry This Plant Lathyrus jepsonii is a species of wild pea known by the common names delta tule pea and Jepson's pea. It is endemic to California, where it grows in a number of habitat types, including forest and estuary. This is a perennial herb with a long, winged stem which climbs by means of branched, coiled tendrils. The leaves are made up of several pairs of lance-shaped leaflets. The plant bears an flower cluster of up to 15 pink or purplish flowers each up to 2 centimeters wide. The fruit is a hairless, dehiscent legume pod. There are two varieties of this species. L. j. var. californicus is a smaller plant which is sometimes hairy, while the rare var. jepsonii can exceed two meters in height and is hairless. The latter is a rare variety which grows in the estuary habitat of the Sacramento-San Joaquin River Delta, the origin of the common name delta tule pea.
Plant Description
Plant Type
Plant Type
Perennial herb

6.6 ft tall

Flower Color
Flower Color
Purple, Pink

Wildlife Supported

Landscaping Information
Full Sun, Part Shade, Full Shade

Soil Drainage
Soil Drainage

Natural Setting
Site Type
Site Type
Open places and marshes

Annual Precipitation: 9.7" - 90.6", Summer Precipitation: 0.18" - 2.46", Coldest Month: 35.3" - 51.0", Hottest Month: 53.6" - 77.6", Humidity: 0.42" - 25.40", Elevation: -15" - 6851"

Alternative Names
Common Names: Delta Tule Pea

Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora

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