Lepisorus suboligolepidus Ching

Family

Polypodiaceae

Nomenclature

Lepisorus suboligolepidus Ching, Bull. Fan. Mem. Inst. Biol. 4: 77. 1933; Tagawa & K.Iwats., Fl. Thailand 3: 513. 1989; Boonkerd & Pollawatn, Pterid. Thailand: 275. 2000. – Pleopeltis suboligolepida (Ching) Tagawa & K.Iwats., Acta Phytotax. Geobot. 26: 172. 1975.

Description

Rhizome creeping, 2 mm diam., bearing fronds rather closely spaced, dark on surface, densely scaly throughout; scales ovate-subtriangular with long-attenuate apex, irregularly toothed at margin, up to 3 by 1.5 mm, the central portion dark brown, not transparent, the marginal portion distinctly clathrate. Stipes up to 2 cm long, stramineous, scaly at base. Laminae linear-lanceolate, broadest at middle, narrowing towards both the attenuate ends, entire and flush at margin, up to 20 by 2 cm; subcoriaceous; veins invisible, copiously anastomosing, sparsely minutely scaly on lower surface. Sori medial, round, about 2 mm diam., distinct from the adjacent ones, superficial. Spores monolete .

Distribution in Thailand

NORTH-EASTERN: Loei.

Wider Distribution

SW China (Yunnan) and Taiwan.

Ecology

In mossy crevices of mossy rocks by streams at about 1200 m alt.; collected only in one locality in Thailand.

Proposed IUCN Conservation Assessment

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

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