(1)
AL-SHEHBAZ, I. A. New Combinations in Brassicaceae (Cruciferae): Draba Serpens Is a Hemilophia and D. Williamsii Is a Lepidostemon. Edinburgh J. Bot. 2002, 59 (3), 443-446. https://doi.org/10.1017/S0960428602000264.