]> [author note: Herbarium and types: BM, CAN, FH, LIL] [collector note: All collections: mainly Lich., some Bryo., few Fungi; Antarctica (col. 1943-1945): BM; Argentina (col. 1946-1950): CAN, FH, H (Lich.), LIL, UPS (Lich.).; Canada: C?; Great Britain (1940): E] [Ivan Mackenzie lamb is the former name of Elke Mackenzie. I. M. Lamb is used on her collecting labels prior to 1973 and she continued to publish under I. M. Lamb after 1973] Botany Lamb, Ivan Mackenzie Lamb, Ivan Mackenzie I. M. Lamb Ivan Mackenzie Lamb; later Elke Mackenzie Ivan Mackenzie Lamb 1911 1990