Prosaptia contigua (G.Forst.) C.Presl
Prosaptia contigua (G.Forst.) C.Presl, Tent. Pterid.: 166. 1936; Bedd., Handb. Ferns Brit. India: 56, f. 28. 1883; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 63. 1967; Tagawa & K.Iwats., Acta Phytotax. Geobot. 23: 53. 1968; Tagawa & K.Iwats., Fl. Thailand 3: 593. 1989; Boonkerd & Pollawatn, Pterid. Thailand: 293. 2000; Parris, Fl. Pen. Malaysia, Ser. I, Ferns & Lycoph. 1: 176. 2010. – Trichomanes contiguum G.Forst., Prodr.: 84 1786. – Ctenopteris contigua (G.Forst.) Holttum, Rev. Fl. Malaya ed. 1, 2: 230, f. 130. 1955 [‘1954’].
Rhizome short creeping, bearing closely spaced fronds, densely scaly, scales subtriangular, attenuate at apex, about 3 by 1.7 mm, thin, more or less clathrate, hairy at margin with dark brown, short setose hairs. Stipes short, to 3.8 cm long, dark brown, rather densely setose hairy. Laminae linear-lanceolate ot oblanceolate, gradually narrowing towards both ends, 11–30(–66) by 2–2.5(–6.7) cm, deeply lobed nearly to midrib with a wing less 0.1–0.7 mm in breadth on each side; middle largest lobes slightly ascending, narrowly subtriangular, straight or slightly falcate, entire, 9–1.5(–3.7) cm by 2–5 mm; thinly leathery, veins simple, sparsely hairy at margin. Sori in cup-shaped cavities at margin of apical portion of lobes, opening towards margin , about 1 mm diam.
Distribution in Thailand
PENINSULAR: Chumphon, Surat Thani, Nakhon Si Thammarat, Yala.
S India, Sri Lanka, Thailand, S China, Taiwan, throughout Malesia, NE Australia, Pacific Islands.
On mossy tree trunks in dense evergreen forests at high altitudes, rather rare. Sometimes lithophytic .
Proposed IUCN Conservation Assessment
Least Concern (LC). This species is widespread and not under any known threat.
Except in the difference in soral character , this and Prosaptia obliquata (Blume) Mett. are quite similar. Prosaptia contigua is abundant on Khao Luang growing in mixed populations with Prosaptia obliquata .
Voucher specimens - Thailand
Hennipman 3853, Nakhon Si Thammarat, Khao Luang (P); Smitinand 1279, Nakhon Si Thammarat, Khao Luang (P).
Site hosted by the Royal Botanic Garden Edinburgh. Content managed by Stuart Lindsay, Gardens by the Bay, Singapore and David Middleton, Singapore Botanic Gardens. Last updated 17 January 2018.