Davallia hymenophylloides (Blume, 1828) Kuhn, 1869
Description
Rhizome without the scales 3-20 mm in diametre, not white waxy (D. hymenophylloides Rhizome). Scales brown (membranaceous), without pale border, narrowed evenly towards the apex, often curling backward, not bearing multiseptate hairs, lacking marginal setae or teeth or those rare, basifixed with cordate base and much overlapping lobes, 4-7 mm long. Stipes dark brown, adaxially grooved, 9-45(-65) cm long, glabrous or with few scales. Lamina compound (D. hymenophylloides Habitus), tripinnate, elongate, often narrowing towards base, glabrous (or nearly so), 20-80(-90) cm long by 6-50 cm broad, not or slightly dimorphous. Longest petiolules 2.5-30 mm long. Pinnae linear-triangular. Longest pinnae 4-30(-44) cm long by 1.5-15(-18) cm broad. Pinnules of at least the larger pinnae anadromous, narrowly ovate. Longest pinnules 10-80 mm long by 5-20 mm broad. Ultimate leaflets linear oblong. Ultimate segments or lobes obtuse or acute without a tooth. Leaf axes glabrous (or nearly so). Veins in sterile ultimate lobes frequently simple, not reaching the margin. False veins not present. Sori separate, frequently single on a segment at the bending point of a vein. Indusium reniform, attached at the narrow cordate base only, wider than long, 0.1-0.4 mm long by 0.4-0.7 mm broad (D. hymenophylloides Indusia).
Distribution
Continental Asia: Sri Lanka (13 coll.); India (W. Ghats 7 coll., Darjeeling 1 coll.); Thailand (Prachinburi 1 coll.).
Malesia: Sumatra (W. Coast 1 coll., Tapanuli 2 coll., Bengkulu 3 coll., E. Coast, Toba 1 coll., Acèh, G. Leuser 1 coll.); Malay Peninsula (many coll.); Java (many coll.); Lesser Sunda Islands (Flores 1 coll.); Borneo (Sarawak 8 coll., Sabah, Kinabalu many coll., Kalimantan Barat 2 coll., Kalimantan Selatan 1 coll., Kalimantan Timur 6 coll.); Philippines (Luzon many coll., Mindanao 8 coll., Mindoro, Mt. Halcon 1 coll., Biliran Island 2 coll., Marinduque Island 1 coll.).
Ecology
Epiphytic or epilithic, rarely terrestrial. Altitude 500-2200 m.