Ferns of Thailand, Laos and Cambodia

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Family

Polypodiaceae

Nomenclature

Loxogramme centicola M.G.Price, Amer. Fern J. 80: 6. 1990; Boonkerd & Pollawatn, Pterid. Thailand: 254, 277. 2000; Boonkerd & Pollwatn, Nat. Hist. J. Chulalongkorn Univ. 6: 22. 2006; Jaman, Fl. Pen. Malaysia, Ser. I, Ferns & Lycoph. 1: 126. 2010. – Type: Tagawa et al. T-5571, Thailand, Trang, Khao Chong (holotype KYO, isotypes L, E?).

Description

Description adapted from M.G.Price, Amer. Fern J. 80: 6. 1990.
Rhizome very short creeping, phyllopodia closely fascicled, 2 mm high, not functionally articulate. Scales linear-deltoid, evenly tapered from base to attenuate apex, flat, 4–9 x 0.4–1 mm, dark reddish brown when young, maturing to dark brown, aging to grey-brown, not rhizoidal. Laminae 5.5–45 x 0.6–3.3 cm, linear-elliptic, evenly tapered to both slender subterete base and gradually acuminate apex, drying slightly involutely, surface wrinkled abaxially, smooth adaxially, texture subcoriaceous, margins not differentiated, thick, rounded. Costa abaxially nearly flat, adaxially strongly raised. Venation not surface visible, many areoles with simple or forked free included veinlets. Sori 0.2–2.2 cm long, 1–2 mm apart, at 13–22° from costa, up to three overlapping on each side of costa, receptacles sunken, strongly embossed on adaxial surface, paraphyses none, spores globose-tetrahedral .

Distribution in Thailand

NORTHERN: Tak; NORTH-EASTERN: Phetchabun; PENINSULAR: Trang.

Wider Distribution

Peninsular Malaysia.

Ecology

On trunks and boulders in dark humid forest.

Proposed IUCN Conservation Assessment

Least Concern (LC). This species is widespread and not under any known threat. It has been given an assessment of VU B1ab(iii) in the Flora of Peninsular Malaysia.

	Ferns of Thailand, Laos and Cambodia
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Loxogramme centicola M.G.Price Warning: count(): Parameter must be an array or an object that implements Countable in C:\Data\serverroots\htdocs\ThaiFerns\factsheets\functions.php on line 17 Family Polypodiaceae Nomenclature Loxogramme centicola M.G.Price, Amer. Fern J. 80: 6. 1990; Boonkerd & Pollawatn, Pterid. Thailand: 254, 277. 2000; Boonkerd & Pollwatn, Nat. Hist. J. Chulalongkorn Univ. 6: 22. 2006; Jaman, Fl. Pen. Malaysia, Ser. I, Ferns & Lycoph. 1: 126. 2010. – Type: Tagawa et al. T-5571, Thailand, Trang, Khao Chong (holotype KYO, isotypes L, E?). Description Description adapted from M.G.Price, Amer. Fern J. 80: 6. 1990. Rhizome very short creeping, phyllopodia closely fascicled, 2 mm high, not functionally articulate. Scales linear-deltoid, evenly tapered from base to attenuate apex, flat, 4–9 x 0.4–1 mm, dark reddish brown when young, maturing to dark brown, aging to grey-brown, not rhizoidal. Laminae 5.5–45 x 0.6–3.3 cm, linear-elliptic, evenly tapered to both slender subterete base and gradually acuminate apex, drying slightly involutely, surface wrinkled abaxially, smooth adaxially, texture subcoriaceous, margins not differentiated, thick, rounded. Costa abaxially nearly flat, adaxially strongly raised. Venation not surface visible, many areoles with simple or forked free included veinlets. Sori 0.2–2.2 cm long, 1–2 mm apart, at 13–22° from costa, up to three overlapping on each side of costa, receptacles sunken, strongly embossed on adaxial surface, paraphyses none, spores globose-tetrahedral . Distribution in Thailand NORTHERN: Tak; NORTH-EASTERN: Phetchabun; PENINSULAR: Trang. Wider Distribution Peninsular Malaysia. Ecology On trunks and boulders in dark humid forest. Proposed IUCN Conservation Assessment Least Concern (LC). This species is widespread and not under any known threat. It has been given an assessment of VU B1ab(iii) in the Flora of Peninsular Malaysia. Warning: count(): Parameter must be an array or an object that implements Countable in C:\Data\serverroots\htdocs\ThaiFerns\factsheets\functions.php on line 17
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