Lepisorus sinensis (Christ) Ching

Family

Polypodiaceae

Nomenclature

Lepisorus sinensis (Christ) Ching, Bull. Fan Mem. Inst. Biol. 4: 63. 1933. – Neurodium sinense Christ, Bull. Herb. Boiss. 6: 880. 1898; Tagawa & K.Iwats., Fl. Thailand 3: 515, f. 51.8 & 51.9. 1989; Boonkerd & Pollawatn, Pterid. Thailand: 275. 2000. – Pleopeltis sinensis (Christ) Copel., Gen. Fil.: 184. 1947; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 50. 1967.

Description

Rhizome creeping, about 2 mm diam., densely scaly; scales gradually narrowing from the broadest attachment point towards attenuate apex, round at base, dark brown with thick internal walls, the marginal portion clathrate, the margin toothed, up to 3 by 0.7 mm. Stipes usually 1 cm apart, scaly at base, narrowly winged nearly to the base, stramineous. Laminae linear, 8–20 by 0.7–1.7 cm, broadest at 1/3 way from base, gradually narrowing towards both ends, attenuate at apex; midrib raised on both surfaces; subcoriaceous, green, bearing sparse small peltate hairs appressed to both surfaces. Sori elongate along medial or submarginal strands, often interrupted, usually confined to the upper half of fronds, about 2 mm broad at maturity. Spores monolete .

Distribution in Thailand

NORTHERN: Chiang Mai.

Wider Distribution

Bhutan and SW China (Yunnan).

Ecology

On mossy branches of trees or on mossy rocks in dense evergreen forests on ridges at 1500–2000 m alt., in the North.

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. 5056, Chiang Mai, Doi Pha Hom Pok National Park (E).

Whole plant from above

Whole plant from above

Whole plant from beneath

Whole plant from beneath

Rhizome

Rhizome

Sori

Sori

Lower surface of frond and base of sori

Lower surface of frond and base of sori

Lower surface of frond apex

Lower surface of frond apex

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