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G.F. Hoffmann, Deutschl. Fl. (Hoffmann), vol. 2 (Cryptogamie): t. 8, fig. 1 (1796) [27]
Illustration contributed by:
Wellcome Museum and Library, London, U.K.
G.F. Hoffmann, Deutschl. Fl. (Hoffmann), vol. 2 (Cryptogamie): t. 8, fig. 1 (1796)