FIG. 18 in The fern genera Dryopteris and Nothoperanema (Dryopteridaceae) in Madagascar and neighbouring Indian Ocean islands, including Saint Paul

FIG. 18. — Indumentum of Dryopteris manniana (Hook.) C.Chr.: A, stipe scale; B, rachis scale; C, pinna-rachis scale; D-F, scale and hairs from abaxial lamina surface. Roux 2857 (NBG). Scale bars: A-D, 0.5 mm; E, F, 0.1 mm.