]> [author note: Herbarium and types: B; other collections at HBG, FI, KIEL, MEL, W] [collector note: Herbarium: B; Alps: KIEL; Germany: B; Baltic & North Sea: B, KIEL; Prussia: FI; Schleswig-Holstein: B, FI; Schleswig: W; Algae: HBG] Botany Jessen, Karl Friedrich Wilhelm Jessen, Karl Friedrich Wilhelm K. F. W. Jessen Jess. Jessen Karl Friedrich Wilhelm Jessen 1821 1889