Lathyrus occidentalis Torr. & A.Gray Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Fabales family Fabaceae genus Lathyrus species Lathyrus palustris Name Homonyms Lathyrus occidentalis Torr. & A.Gray Lathyrus occidentalis (Fisch. & C.A.Mey.) Fritsch Lathyrus occidentalis Howell Lathyrus occidentalis Rouy, 1899 Lathyrus occidentalis Nutt.