Davallia speciosa Mettenius, 1869 in Kuhn
Description
Rhizome without the scales 3-5 mm in diametre, not white waxy. Scales red-brown, without pale border, flat and nearly acicular, narrowed abruptly from a broad base, often curling backward, not bearing multiseptate hairs, lacking marginal setae or teeth or those rare, peltate, 5-7 mm long by 0.8-1.5 mm broad. Stipes dark brown, adaxially grooved, 7-13 cm long, glabrous or with few scales. Lamina compound, deltoid, bipinnate towards base and in the middle part, deltoid and broadest towards base, glabrous, 16-25 cm long by 12-18 cm broad, not or slightly dimorphous. Longest petiolules 3-8 mm long. Pinnae deltoid or ovate. Longest pinnae 6-10 cm long by 3.5-5 cm broad. Pinnules of at least the larger pinnae anadromous, ovate, pinnules 15-30 mm long by 8-12 mm broad. Ultimate leaflets lobed almost to the midrib. Ultimate segments or lobes obtuse or acute without a tooth, 4-6 mm long by 2-4 mm broad. Upper ridge at the junction of the costa and pinna-rachis not swollen. Leaf axes glabrous. Margins of the lamina of each leaflet not thickened. Veins in sterile ultimate lobes pinnate, reaching the margin. False veins not present. Sori separate, borne several on a segment, at the forking point of veins (D. speciosa). Indusium attached at the base and only part of the sides, more or less triangular to rhomboid, about as wide as long, 0.8-1.2 mm long by 0.8-1.2 mm broad, upper margin not elongated, truncate or slightly rounded, separated from or even with lamina margin. Lamina generally extending into a tooth only at the outside of a sorus.
Distribution
Continental Asia: Burma (Moulmein 2 coll.)