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The purple peavine (Lathyrus nevadensis) belongs to Fabaceae (the Pea family). It is a perennial herb that is native to western North America from British Columbia to northern California and as far east as Idaho. This herb grows in forests, and sprawls on the ground or climbs up, supported by tendrils, and it can reach 60-120 cm in height. The leaves are impari-pinnate with 4 to 10 widely ovate leaflets. The pink, red-purple, or white, papilionacenous flowers bloom from late spring to early summer.
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