Polystichum zambesiacum Schelpe
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Common name |
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Description |
Rhizome shortly creeping to suberect, up to 25 mm in diameter; rhizome scales up to 20 mm long, margin entire, reddish-brown, narrowly lanceolate, tapering to a point. Fronds closely tufted, arching, herbaceous, drying almost black on ventral side, dull green on dorsal side. Stipe up to 65 cm long, pale brown but darker near the base; set towards the base with dark scales with pale margins, up to 10 mm long. Lamina ovate to broadly lanceolate in outline, terminal segment long and narrow, 2-pinnate to 3-pinnatifid, with basal pair of pinnae somewhat reduced and deflexed, up to 90 × 50 cm. Pinnae narrowly lanceolate, tapering to a point. Pinnules variable, narrowly oblong to narrowly lanceolate in outline, basal acroscopic lobe enlarged and sometimes almost free; margins entire, shallowly lobed or deeply pinnatifid into crenate-serrate blunt lobes; both surfaces glabrous. Rhachis with scattered scales similar to those on the stipe but smaller. Sori round, c. 0.75 mm in diameter; indusia very small, shed soon after maturity. |
Notes | This species does not have aristate pinnule margins, the rhachis has hair-like scales and the rhizome is short suberect. |
Derivation | zambesiacum: of the Zambesia region; referring to the Flora Zambesiaca area, type specimen found in Zimbabwe. |
Habitat | In high altitude evergreen, montane mist forest, in shade on forest floor, along forest edge and streams. |
Distribution worldwide | See African distribution. |
Distribution in Africa |
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Growth form |
Lithophytic, terrestrial. |
Literature |
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