Davallia angustata Wallich ex Hooker and Greville, 1831
Description
Rhizome without the scales 1-2.5 mm in diametre, usually white waxy under the scales. Scales red-brown to nearly black, without pale border, narrowed evenly towards the apex, not or seldom curling backward, not bearing multiseptate hairs, toothed, peltate, 6-8 mm long by 1 mm broad. Stipes pale to dark brown, adaxially grooved, 1-7 cm long, glabrous or with few scales. Lamina simple (D. angustata Habitus), one entire to pinnatilobed leaf, linear, glabrous, 5-24 cm long by 6-20 cm broad, not or slightly dimorphous. Margins distinctly crenulate to dentate at least towards apex. False veins absent. Sori separate at the forking point of veins. Indusium attached at the broad base and hardly or not at the sides, semicircular, about as wide as long, 0.5-0.8 mm long by 0.6-0.8 mm broad (D. angustata SEM, picture of indusia).
Distribution
Continental Asia: Southern Cambodia (1 coll.); Southern Thailand (Kao Keo, Patani, Songkla 1 coll. each).
Malesia: Sumatra (Bangka, Batu I., Bengkulu, Djambi, E. Coast, Ayer Sakor, Riouw, Lingga Arch., P. Lingga, Indragiri, P. Bientang); Malay Peninsula (Johore, Kedah, Kelantan, Malacca, Negri Sembilan, Pahang, Penang, Perak, Selangor, Trengganu 22 coll.); Singapore (2 coll.); Borneo (Sarawak, Bako Nat. Park, Bidi cave, Bintulu, Mt. Dulit, N. end of Pueh range, Simangan, Sgei Senang besar, Ulu kayan each 1 coll., Brunei 3 coll., Sabah, Sandakan 1 coll. Kalimantan Barat, Bukit Tilung 2 coll., G. Semedung, Pontianak, Sanggau, and G. Palung, each 1 coll., Kalimantan Tengah, Sampit 2 coll., Kalimantan Selatan, G. Sakoembang 1 coll., Kalimantan Timur, G. Batukenye, G. Beratus, Sgei Wain N. of Balikpapan each 1 coll., Samarinda 2 coll.); Philippines (Palawan 2 coll., Paragua Island 1 coll., Mindanao 1 coll.); Sulawesi (Southeast, Danau Towuti 1 coll., South 2 coll.).
Pacific: Palau Islands (Baobeltaob 1 coll.).
Ecology
Epiphytic, often low on tree bole, or epilithic. Altitude 0-1300 m.