]> [author note: Herbarium and types: AHFH, F, LD, LL, UC, USC] [collector note: 1940-1952: AHFH (4800 Algae; 100 Cactaceae), F, LD (Algae), UC (Algae), USC (10200 Algae), LL (phan.)] Botany Dawson, Elmer Yale Dawson, Elmer Yale E. Y. Dawson Elmer Yale Dawson 1918 1966