About Lathyrus lanszwertii Kellogg
Lathyrus lanszwertii Kellogg is a species of sweet pea that has the common names Nevada sweet pea and Nevada peavine. It occurs in western North America, ranging from California to Texas to British Columbia. This plant is a tender vining perennial that produces lavender, fuchsia, or white pea-shaped flowers, as well as seed pods that hold inedible peas. Individual plants of this species show a high degree of variation, and several distinct varieties are recognized: Lathyrus lanszwertii var. aridus (Piper) Jeps., Lathyrus lanszwertii var. arizonicus (Britton) S.L.Welsh, Lathyrus lanszwertii var. bijugatus (T.G.White) Broich, Lathyrus lanszwertii var. lanszwertii, and Lathyrus lanszwertii var. pallescens Barneby.