Monographs Details: Lotus purshianus var. helleri (Britton) 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 - N Georgia to s Virginia. Piedmont; woodlands, river bottoms; disturbed and ruderal areas as pastures, old fields, ditches, roadsides. Aug.-Sept.
Discussion:Loius helleri Britt. (1890); Acmispon helleri (Britt.) Hell. (1914), (Britt.) Small (1933); Hosackia helleri (Britt.) Blomquist & Oosting (1940); L. purshianus var helleri (Britt.) Isely (1978).
Lotus purshianus var helleri is relatively monomorphic: stiffly erect, glabrate, and with narrow leaflets. Since it has no present breeding contact with var purshianus, it is reasonably maintained as a species (e.g., Radford et al., 1968). By the same logic, L. purshianus of the central states perhaps could be segregated from that of the Pacific coast. Var helleri is but one of many elements within the L. purshianus complex and its differences from the rest are less than among the California races.
Distribution:United States of America North America