Cyrtomium micropterum (Kuntze) Ching
Synonyms |
Aspidium anomophyllum Zenker f. micropterum Kunze |
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Common name |
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Description |
Rhizome erect, to 6 cm high; rhizome scales shiny dark brown, ovate-lanceolate in outline, 8–13 x 2–3 mm, apex tapering abruptly to a point, pale centre, pale fimbriate margins. Fronds monomorphic, tufted, erect to arching, coriaceous. Stipe grooved, 8–30 cm long, with pale brown scales 8–15 x 1.5–3 mm, irregularly fimbriate, denser on sterile fronds, less dense on fertile fronds. Lamina pinnate, narrowly ovate or elliptic in outline, 20–45 x 8–18 cm, dark green above, pale greyish green below; pinnae 6–12 on each side of the rhachis, 4.7–8.5 x 2–2.5 cm, irregularly rhomboid-falcate, with a single blunt auricle, base cuneate on basiscopic side with acroscopic side truncate and uriculate, apex up-turned, tapering to a point, blunt, margin toothed; apical pinna equivalent to the other pinnae, glabrous on both surfacesbut with a few brown hair-like scales on the costa below; veins anastomosing regularly, forming 2–3 ± parallel zones of areoles, traversed by pinnate veins, on periphery free veinlets reach serrate points but not margin; rhachis below with sparse fimbriate scales, denser around stalks of pinnae. Sori ± regularly scattered over the undersurface of the pinnae, circular, 0.3–2 mm in diameter; indusium an ephemeral dark rust-red funnel-forming peltate stalk 0.25 mm, opening into highly dissected umbrella shape ± 1.8 mm in diameter; on dehiscing, peltate funnel-stalk detaches like plug from receptacle. |
Notes | |
Derivation | micropteris: small fern. |
Habitat | Deeply shaded ravines or on mountain slopes in moist forest, dry forest along the river, plantation, on dry shady rock. |
Distribution worldwide | Africa, Madagascar to southern China and southern India. |
Distribution in Africa |
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Growth form |
Epiphytic, lithophytic, terrestrial. |
Literature |
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