Monographs Details: Lotus scoparius var. brevialatus Ottley
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 given in key. Desert slopes, flats, cliffs, badlands, washes; sand, granite. 7-4500 ft. Feb.-June (-Oct.).

Discussion:L. scoparius var brevialatus Ottley (1923); Hosackia glabra subsp brevialata (Ottley) Abrams (1944). Though varying in size, the keel of Lotus scoparius var brevialatus is always prominent. The variety seems clearly marked except possibly in Los Angeles co where specimens include, in addition to both varieties in typical form, plants with a long keel but flower size of var scoparius.