Tomophyllum subfalcatum (Blume) Parris
Tomophyllum subfalcatum (Blume) Parris, Gard. Bull. Singapore 58: 248. 2007. – Polypodium subfalcatum Blume, Enum. Pl. Javae: 130. 1828; Bedd., Handb. Ferns Brit. India: 314, f. 168. 1883. – Ctenopteris subfalcata (Blume) Kunze, Bot. Zeit. 6: 120. 1848; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 62. 1967; Tagawa & K.Iwats., Fl. Thailand 3: 590. 1989; Boonkerd & Pollawatn, Pterid. Thailand: 290. 2000.
Rhizome short, erect, bearing a tuft of fronds at apex, scaly; scales thin, membranous, light brown, up to 2 mm long. Stipes up to 1 cm long, indistinct, densely hairy with setose pale, patent hairs up to 2 mm in length. Laminae oblong-lanceolate, gradually narrowing towards both apex and base, up to 10 by 1.5 cm; pinnae ascending, narrow, round or moderately acute at apex, gross dentate about 1/5–1/3 way towards costa, up to 8 by 3 mm, the lobes round-subdeltoid, round to moderately acute at apex, each containing a veinlet; thinly herbaceous, densely hairy on both surfaces with long, pale setose hairs up to 2 mm in length. Sori round, one to each lobe, usually fusing with those adjacent at maturity.
Distribution in Thailand
NORTHERN: Chiang Mai; PENINSULAR: Nakhon Si Thammarat.
Sri Lanka, Himalayas, S China and Taiwan.
On mossy tree trunks in dense evergreen forests usually on ridges at high altitudes.
Proposed IUCN Conservation Assessment
Least Concern (LC). This species is widespread and not under any known threat.
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