Monographs Details: Lotus argophyllus var. niveus (Greene) 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 - Insular: Santa Cruz and San Clemente. Dry slopes. 0-1000 ft. April-July.
Discussion:Syrmatium niveum Greene (1887); Hosackia nivea (Greene) Wats. (1887); Lotus niveus (Greene) Greene (1890); L. argophyllus var niveus (Greene) Ottley (1923).
L. argophyllus var adsurgens Dunkle (1941); L. argophyllus subsp. adsurgens (Dunkle) Raven (1963).
Collections of Lotus argophyllus var niveus are few and contain little habit or habitat information. Apparently, plants may be either erect and bushy or sprawling. Contrary to previous descriptions, I find the corolla usually exceeds the calyx, and that the calyx lobes, hidden in the mass of pilosity, may be either long or short. Possibly, this variety is derivative of var fremontii of the mainland.
Lotus argophyllus subsp adsurgens (Dunkle) Raven is an individualistic, local population of San Clemente Island. The ascending silvery plants have neat, wandlike, closely leafy branches terminated by densely aggregated umbels. They are not identical with var niveus of Santa Cruz Island, but I regard the two as variants on the same theme.
Distribution:United States of America North America