Davallia triphylla Hooker, 1845
Description
Rhizome without the scales 2-5 mm in diametre, not white waxy (D. triphylla Rhizome). Scales nearly black, with pale border quickly diminishing or disappearing towards the apex, distinctly acicular, appressed to rhizome, not crisped, bearing multiseptate hairs at least when young, peltate, 5 mm long. Stipes dark brown, adaxially grooved, 2-8 cm long, glabrous or with few scales. Lamina imparipinnate (D. triphylla Habitus), leaflets entire or nearly so, occasionally lobed at the base or once branched, or simple, one entire to pinnatilobed leaf, glabrous, not or slightly dimorphous. Leaflets entire or nearly so, sometimes with some basal lobes. Sterile terminal leaflet or simple leaf 9-35 cm long by 10-40 mm broad. Lateral leaflets 6-9 cm long by 6-25 mm broad. Margin recurved or revolute, distinctly crenulate to dentate at least towards apex. Pinnae narrowly ovate. Leaflets of fertile leaves entire or nearly so, sometimes with some basal lobes, or pinnatifid. Fertile terminal leaflet or simple leaf 8-28 cm long by 10-45 mm broad. Lateral leaflets 4-8 cm long by 7-20 mm broad. Margins distinctly crenulate to dentate at least towards apex or not. Pinnae generally sessile, but petiolules of fertile leaves can be up to 1 mm long. Pinnae narrowly ovate or linear. Veins in sterile leaflets parallel, once or twice branched from the base, reaching the margin. False veins not present. Sori separate at the forking point of veins. Indusium also attached along the sides, pouch-shaped, oblong, longer than wide, 2 mm long by 0.5-0.75 mm broad, upper margin not elongated, truncate or slightly rounded, separated from or even with lamina margin, or protruding beyond lamina margin (D. triphylla SEM, picture of indusia).
Distribution
Malesia: Malay Peninsula (Perak 3 coll., Selangor 1 coll., Trengganu 1 coll., Negri Sembilan 1 coll., Johore 7 coll.); Singapore (4 coll.); Sumatra (Acèh 1 coll., Riouw, Indragiri 2 coll., Jambi 1 coll.); Borneo (Sarawak 4 coll., Sabah 1 coll., Kalimantan Timur 8 coll.).