Hymenophyllum triangulare Baker
Synonyms |
Meringium triangulare (Baker) Copel. |
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Common name |
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Description |
Rhizome creeping, wiry, hairless or with hairs to 1.5 mm. Fronds spaced at 2–10 cm apart. Stipe (2–)4–6 cm long, unwinged or with very narrow wings, hairless or with a few hairs. Lamina triangular to oblong in outline, 7–12 x 4–6 cm, pinnae 5–8, narrowly ovate in outline, to 3 x 2.5 cm; ultimate segments linear, to 4 x 1.5 mm, rounded, margin spinulose to denticulate; glabrous. Rhachis narrowly winged, the wings with narrowly triangular lobes. Sori on the lower acroscopic lobe of the upper pinnae, 2–3 mm long, 1.5–2 mm in diameter; indusial lobes ovate or elliptic, glabrous; receptacle slightly exserted. |
Notes | |
Derivation | triangulare: triangular, reference to the outline of the lamina. |
Habitat | Moist or mist forest, often on ridge-tops. |
Distribution worldwide | See African distribution. |
Distribution in Africa |
Burundi, Cameroon, Dem. Republic of Congo, Equatorial Guinea (incl. Bioko), Rwanda, Tanzania . |
Growth form |
Epiphytic. |
Literature |
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