Loxogramme porcata M.G.Price

Family

Polypodiaceae

Nomenclature

Loxogramme porcata M.G.Price, Amer. Fern J. 80: 6. 1990; Boonkerd & Pollawatn, Pterid. Thailand: 278. 2000.

Description

Description adapted from M.G.Price, Amer. Fern J. 80: 6. 1990.
Rhizome short creeping, phyllopodia approximately 3 mm apart, to 3 mm high, not functionally articulate. Scales linear-lanceolate, 5–10 x 0.5–1.2 mm, dark greyish-brown, aging to nearly black, not rhizoidal, thin, flat or slightly revolute, apex long attenuate, contorted. Laminae narrowly elliptic to oblanceolate, apex gradually acuminate, evenly narrowed to base, 10.5–61 x 0.8–6 cm, coriaceous, light olive-brown to deep brown, surface slightly to deeply wrinkled abaxially, smooth adaxially, drying strongly involutely except for the pale cartilaginous margin 0.1–0.15 mm wide which is often oriented revolutely. Costa adaxially prominent, to 0.5 mm high, abaxially planate to slightly raised. Primary lateral veins slightly evident adaxially, some areoles with free included simple veinlets, also a few free submarginal veinlets. Sori to 6 cm long, 2–5 mm apart, up to 4 on each side of costa overlapping, 15–20° from costa, receptacles about flush, not embossed on adaxial surface. Paraphyses dense, slightly exceeding ripe sporangia, uniseriate, c. 10 cells long, cross-walls conspicuous, apical cell small, pale, clavate. Spores fabiform-monolete .

Distribution in Thailand

NORTHERN: Chiang Mai.

Wider Distribution

India, Sri Lanka, Nepal, Bhutan, China.

Ecology

Epiphytic on tree trunks or on rocks in shade.

Proposed IUCN Conservation Assessment

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

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