Rhynchospora fusca (L.) Aiton f.
      
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1 880479 Rhynchospora fusca (L.) Aiton f. [181 919375 Schoenus fuscus L.] Cyperaceae
J. Sturm, E.H.L. Krause, K.G. Lutz, Deutschl. Fl., ed. 2, vol. 2 : t. 20, fig. 2 (1900)