Hemionitis vestita (Wall. ex Hook.) J.Sm.

Family

Pteridaceae, subfamily Cheilanthoideae

Nomenclature

Hemionitis vestita (Wall. ex Hook.) J.Sm., Hist. Fil. 151. 1875. – Gymnogramma vestita Wall. ex Hook., Icon. Pl. 2: t. 115. 1837. – Syngramma vestita (Wall. ex Hook.) T.Moore, Index Fil.: lx. 1857; Bedd., Handb. Ferns Brit. India: 386, f. 229. 1883. – Gymnopteris vestita (Wall. ex Hook.) Underw., Bull. Torrey Bot. Club 29: 627. 1902; Tagawa & K.Iwats., Acta Phytotax. Geobot. 25: 19; 1971; Tagawa & K.Iwats., Fl. Thailand 3: 193, f. 14.3. 1985; Boonkerd & Pollawatn, Pterid. Thailand: 123. 2000.

Description

Rhizome short creeping, bearing closely spaced fronds, densely covered with both scales and hairs; scales linear, about 0.1 mm broad, brown, like hairs: hairs downy, brown to paler, up to 5 mm long. Stipes up to 10 cm long, castaneous, densely covered with pale brown soft hairs. Laminae imparipinnate, narrowly elliptic, up to 8 by 2 cm; rachis like stipe, densely beset with paler appressed hairs; lateral pinnae 4–18 pairs, nearly the same in size and form, ovate, acute at apex, round to cordate at base, about l.5 by 1 cm, distinctly stalked, densely covered with a mat of hairs on both surfaces; veins a few times forked, all free. Sori dispersed along veins, naked.

Distribution in Thailand

NORTHERN: Chiang Mai.

Wider Distribution

N India and SW China.

Ecology

In rock crevices at about 2000 m alt. in limestone areas of Doi Chiang Dao.

Proposed IUCN Conservation Assessment

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

Upper surface of frond

Upper surface of frond

Lower and upper surfaces of frond

Lower and upper surfaces of frond

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