Family

Pteridaceae, subfamily Vittarioideae

Nomenclature

Vaginularia trichoidea Fée, Mém. Foug., 3. Hist. Vittar. 54. 1852; Tagawa & K.Iwats., SouthE. Asian Stud. 3(3): 89. 1965; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 112. 1967; Tagawa & K.Iwats., Fl. Thailand 3: 229, f. 17.4. 1985; Boonkerd & Pollawatn, Pterid. Thailand: 134. 2000. – Monogramma trichoidea (Fée) J.Sm. ex Hook. & Baker, Syn. Fil. 375. 1868; Holttum, Rev. Fl. Malaya ed. 1, 2: 616, f. 362. 1955 [‘1954’].

Description

Rhizome slender, about 0.2 mm diam., bearing close-set fronds, scaly throughout; scales narrowly subtriangular, hair-pointed, up to 2 by 0.4 mm, brown, clathrate, minutely toothed at margin. Stipes not distinct. Frond minute; filamentous, up to 6 cm long, 0.3 mm broad in sterile portion, thin, with a single costa and few short lateral veins in soriferous portion. Sori in a single row, up to 5 mm long, 1.5 times broader than the sterile portion of frond, one to few on a single frond; paraphyses filamentous .

Distribution in Thailand

PENINSULAR: Nakhon Si Thammarat, Trang.

Wider Distribution

W Malesia.

Ecology

On muddy moist rocks by streams in dense evergreen forests at low or medium altitudes.

Proposed IUCN Conservation Assessment

Least Concern (LC). This species is widespread and not under any known threat.