Monographs Details: Lotus grandiflorus var. macranthus (Greene) Isely
Authority: Isely, Duane. 1981. Leguminosae of the United States. III. Subfamily Papilionoideae: tribes Sophoreae, Podalyrieae, Loteae. Mem. New York Bot. Gard. 25 (3): 1-264.
Description:Distribution and Ecology - Range as indicated in key. Chaparral to yellow pine forest, river benches. Ca. 3000-6000 ft. April-June.

Discussion:Hosackia macrantha Greene (1886); L. macranthus (Greene) Greene (1890); Anisolotus macranthus (Greene) Hell. (1912); L. grandiflorus var macranthus (Greene) Isely (1978).