]> [author note: Herbarium and types: ICEL; additional material at B, C, F, L] [collector note: Herbarium: ICEL; Faeroe Is. (1897-98): C; Iceland (1893-1920): B (Alg.), C, F, ICEL, L] Botany Jonsson, Helgi Jonsson, Helgi H. Jonsson Jonss. Jonsson Helgi Jonsson 1867 1925