Distribution: Occurring chiefly east of the Cascades crest in Washington; British Columbia to California, east to Montana and Utah.
Habitat: Sagebrush-ponderosa pine woodland to moderate elevations in the mountains.
Flowers: May-June
Origin: Native
Growth Duration: Perennial
Conservation Status: Not of concern
Pollination: Bumblebees, bees, butterflies
[none provided]
PNW Herbaria: Specimen records of Lathyrus lanszwertii in the Consortium of Pacific Northwest Herbaria database
WA Flora Checklist: Lathyrus lanszwertii checklist entry
OregonFlora: Lathyrus lanszwertii information
E-Flora BC: Lathyrus lanszwertii atlas page
CalPhotos: Lathyrus lanszwertii photos