Lathyrus lanszwertii var. arizonicus (Britton) S.L.Welsh
kingdom: Plantae >
subkingdom: Pteridobiotina Britton & Brown >
phylum: Tracheophyta >
class: Magnoliopsida >
order: Fabales Bromhead >
family: Fabaceae >
genus: Lathyrus L. >
species: Lathyrus lanszwertii Kellogg >
Arizona , Colorado , Mexico Northeast , Mexico Northwest , New Mexico , Texas , Utah