Angled Pea: Lathyrus angulatus -
Yellow Pea, Yellow Vetchling: Lathyrus aphaca -
Few-flowered Pea: Lathyrus brownii (Synonyms: Lathyrus lanszwertii var. brownii, Lathyrus pauciflorus ssp. brownii, Lathyrus schaffneri) -
Del Norte Pea: Lathyrus delnorticus -
Caley Pea, Hairy Pea, Rough Peavine: Lathyrus hirsutus -
Thin-leaf Pea, Thin-leaf Vetchling, Thin-leaved Pea, Thin-leaved Peavine: Lathyrus holochlorus -
Beach Pea, Maritime Pea, Maritime Peavine: Lathyrus japonicus var. glaber (Synonyms: Lathyrus japonicus ssp. maritimus, Lathyrus japonicus var. glaber, Lathyrus japonicus var. maritimus, Lathyrus maritimus, Lathyrus maritimus var. glaber, Pisum maritimum, Pisum maritimum var. glaber) -
Dryland Nevada Pea, Nevada Peavine, Pinewoods Peavine: Lathyrus lanswertii var. aridus (Synonym: Lathyrus lanszwertii ssp. aridus) - Uncommon west of the Cascade crest in Oregon.
Lanszwert's Pea, Thick-leaved Peavine: Lathyrus lanszwertii var. lanszwertii (Synonym: Lathyrus lanszwertii ssp. lanszwertii) - Uncommon west of the Cascades. Collected once in the Seattle area.
Everlasting Pea, Everlasting-pea, Everlasting Peavine, Perennial Pea, Perennial Peavine: Lathyrus latifolius (Synnonym: Lathyrus latifolius var. splendens) -
Beach Peavine, Gray Beach Pea, Silky Beach Pea, Silky Beach Vetchling: Lathyrus littoralis -
Sierra Nevada Pea, Sierra Peavine, Sierran Peavine: Lathyrus nevadensis var. nevadensis (Synonyms: Lathyrus lanceolatus, Lathyrus nevadensis ssp. lanceolatus, Lathyrus nevadensis ssp. nevadensis, Lathyrus nevadensis var. nuttallii, Lathyrus nevadensis var. pilosellus, Lathyrus nevadensis var. puniceus, Lathyrus nuttallii) -
Grass Pea, Grass Vetchling: Lathyrus nissolia -
Sweet Pea: Lathyrus odoratus -
Marsh Pea, Marsh Peavine: Lathyrus palustris (Synonyms: Lathyrus palustris ssp. pilosus, Lathyrus palustris var. linearifolius, Lathyrus palustris var. macranthus, Lathyrus palustris var. meridionalis, Lathyrus palustris var. myrtifolius, Lathyrus palustris var. palustris, Lathyrus palustris var. pilosus, Lathyrus palustris var. retusus) -
Few-flowered Pea, Few-flowered Peavine: Lathyrus pauciflorus var. pauciflorus (Synonyms: Lathyrus pauciflorus var. pauciflorus, Lathyrus pauciflorus var. tenuior) -
Leafy Pea, Leafy Peavine: Lathyrus polyphyllus -
Grass Pea, Grass Peavine: Lathyrus sphaericus -
Brewer's Sweet Pea, Snub Pea, Sulphur Pea: Lathyrus sulphureus (Synonym: Lathyrus nevadensis ssp. stipulaceus, Lathyrus sulphureus var. sulphureus) -
Flat Pea, Flat Peavine, Narrow-leaf Pea, Narrow-leaf Peavine: Lathyrus sylvestris -
Tangier Pea: Lathyrus tingitanus -
Torrey's Pea, Torrey's Pevine: Lathyrus torreyi -
Tracy's Nevada Pea, Tracy's Pea: Lathyrus tracyi (Synonym: Lathyrus lanszwertii var. tracyi) -
Spring Vetchling: Lathyrus vernus -
Bolander's Pea, Pacific Pea, Pcific Peavine: Lathyrus vestitus var. ochropetalus (Synonyms: Lathyrus bolanderi, Lathyrus ochropetalus, Lathyrus peckii, Lathyrus vestitus ssp. bolanderi, Lathyrus vestitus ssp. ochropetalus) -
Pacific Pea: Lathyrus vestitus var. vestitus (Synonyms: Lathyrus vestitus ssp. puberulus, Lathyrus vestitus ssp. vestitus) -