Comprehensive Description

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Rhizome shortly creeping; rhizome scales lanceolate, entire, dark brown, up to 3 mm long.  Fronds tufted, up to 1.2m long, erect to arching, firmly herbaceous to coriaceous, dimorphous with the fertile fronds taller and with narrower pinnae than that of the sterile fronds.  Stipe up to 60 cm in sterile fronds and up to 90 cm in fertile fronds, strawcoloured to brown and scaly at the base, glabrous.  Sterile lamina 13-55 × 13-38 cm, ovate in outline, pinnate in the upper part, the lower part basiscopically developed, terminal pinnae larger or as long as the longest lateral pinnae; pinnae linear-lanceolate, apex tapering to a point, base cuneate, margins toothed, glabrous on both surfaces, veins free.   Fertile lamina up to twice as large as the sterile lamina, pinnate with basal pinnae basiscopically developed; pinnae narrowly linear to narrowly lanceolate in outline, apex tapering to a point, base tapering, 7-13 mm wide, margin entire, glabrous on both surfaces.  Sori linear, marginal, continuous, extending almost up to the apex; indusium membranous, entire.   


Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© Mark Hyde, Bart Wursten and Petra Ballings

Source: Flora of Zimbabwe

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