Abstract
Four new taxa of ferns are described and illustrated from southern Africa: Ophioglossum convexum J.E. Burrows, Mohria caffrorum (L.) Desv. var. ferruginea J.E. S.M. Burrows, Marsilea farinosa Launert subsp. arrecta J.E. Burrows and Asplenium sebungweense J.E. Burrows. The combination of Grammitis rigescens (Bory ex Willd.) J.E. Burrows is made. Ophioglossum thomasii Clausen, O. rube Hum Welw. ex A. Braun. Vinana ensiformis Swartz and Asplenium buettneri Hieron. ex Brause are new records for Zimbabwe, while Hymenophyllum splendidum V.d. Bosch and Asplenium uhligii Hieron. are new records for Malawi and Zimbabwe. Actiniopteris semiflabellata Pichi-Sermolli is recorded from Namibia and Thelypteris oppositiformis (C. Chr.) Ching is recorded from the Transvaal.
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