Asplenium anisophyllum var. elongatum Mett.
Asplenium anisophyllum Sensu Sim.
Asplenium anisophyllum Kunze var. latifolium Hook.
Rhizome erect or sometimes shortly creeping, 20 mm thick, fleshy, branching on large plants; rhizome scales brown with pale margins, linear-lanceolate in outline, up to 18 x 2 mm. Fronds uniform, tufted, gemmiferous towards the base of the apical pinna. Stipe up to 26 × 0.4 cm, stipe and rhachis with reddish-brown hairlike scales up to 14 mm long, later becoming subglabrous. Lamina up to 80 × 22 cm, pinnate with 13 to 28 pairs of pinnae, with the lowest pinnae slightly reduced, ovate-lanceolate in outline. Pinnae lanceolate in outline, 4-10(-15) x 1-1.5(-1.8) cm, apex gradually tapering to a point, base asymmetrical, margins irregurly incised into bilobed teeth, hairless above, with scattered hairlike scales below when young, veins forked. Sori oval, 3-8 mm long, set along the veins at 30 degrees to the costa; indusium subelliptic, entire, 1-1.5 mm broad.
Confused with A. anisophyllum but A. boltonii is gemmiferous; confused with A. gemmiferum but A. boltonii has less broad pinnae with margins incised 1/3 way to the costa.
boltonii: type specimen was collected by General D. Bolton in Natal.
Dense shade, along streams in evergreen moist forest.
Africa, Madagascar, Réunion.
Distribution in Africa
Dem. Republic of Congo, Equatorial Guinea (incl. Bioko), Kenya, Malawi, Mozambique, South Africa, Swaziland, Tanzania , Uganda, Zambia, Zimbabwe.
Epiphytic, lithophytic, terrestrial.
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