Family

Polypodiaceae

Nomenclature

Lepisorus sublinearis (Baker ex Takeda) Ching, Bull. Fan Mem. Inst. Biol. 4: 78. 1933; Tardieu & C.Chr., Fl. Indo-Chine 7(2): 459. 1941; Tagawa & K.Iwats., Fl. Thailand 3: 512. 1989; Boonkerd & Pollawatn, Pterid. Thailand: 275. 2000. – Polypodium sublineare Baker ex Takeda, Notes Roy. Bot. Gard. Edinburgh 8: 276. 1915; C.Chr., Contr. U.S. Natl. Herb. 26: 320, pl. 22. 1931. – Pleopeltis sublinearis (Baker ex Takeda) Tagawa & K.Iwats., Acta Phytotax. Geobot. 22: 100. 1967; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 50. 1967.

Description

Rhizome creeping, about 5 mm diam., bearing fronds rather closely spaced, densely scaly; scales oblong-subtriangular, round at base, gradually narrowing towards long-attenuate apex, irregularly toothed at margin, up to 6 by 2.5 mm, concolorously brown, distinctly clathrate throughout. Stipes very short, indistinct, scaly at base. Laminae linear-lanceolate, broadest usually near base, gradually narrowing towards the long-attenuate apex and base, up to 30 by 3.5 cm, entire or a little revolute at margin; coriaceous or subcoriaceous; veins more or less visible, copiously anastomosing. Sori close to midrib, round to elliptic, often oblique, up to 4 mm broad, superficial. Spores monolete .

Distribution in Thailand

NORTHERN: Chiang Mai.

Distribution in Laos

Champasak.

Wider Distribution

Burma, SW China (Yunnan) and Indochina.

Ecology

On mossy tree trunks or on mossy cliffs in dense forests at high altitudes in the North, rather rare.

Similar species

Lepisorus scolopendrium (Ching) Mehra & Bir

Proposed IUCN Conservation Assessment

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

Voucher specimens - Thailand

Middleton et al. 4902, Chiang Mai, Doi Inthanon National Park (E).