Asplenium antrophyoides Christ
Asplenium antrophyoides Christ, Bull. Acad. Int. Geogr. Bot. 20: 170. 1909; Tardieu & C.Chr., Fl. Indo-Chine 7(2): 218. 1940; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 84. 1967; Holttum, Gard. Bull. Singapore 27: 154. 1974; Tagawa & K.Iwats., Fl. Thailand 3: 270. 1985; Boonkerd & Pollawatn, Pterid. Thailand: 138. 2000; Newman et al., Checkl. Vasc. Pl. Lao PDR: 25. 2007. – Neottopteris antrophyoides (Christ) Ching, Bull. Fan Mem. Inst. Biol. Bot. 10: 7. 1940. – Type: Cavalerie 1877, China (E, E00413973).
Lithophytic. Rhizome short, ascending, bearing a few fronds in a tuft, scaly; scales brown, concolorous, not clathrate (although reported as clathrate in Flora of Thailand), up to 4 by 2 mm, margin with dark reddish brown papillae. Stipes green to stramineous, winged nearly to the base, glabrescent. Frond spathulate, gradually narrowing towards acuminate apex, rather abruptly narrowing from the broadest portion and broadly decurrent to wings of stipe, up to 60 cm long including stipe, 6 cm broad, the foliar portion about a half of whole length, subentire at margin; chartaceous, glabrous, green, paler below; midrib raised below, flat on upper surface, veins more or less visible on upper surface, usually forked near midrib, joining at apex to form submarginal veins about 0.5 mm inside margin. Sori elongate along vein, extending from near base to about 5 mm inside margin; indusia broad, entire .
Distribution in Thailand
NORTHERN: Chiang Mai.
Distribution in Laos
SW China, Vietnam and Laos.
On moist limestone cliffs in dense forests at about 1900 m on Doi Chiang Dao.
Proposed IUCN Conservation Assessment
Least Concern (LC). This species is widespread and not under any known threats.
Voucher specimens - Thailand
Middleton et al. 5001, Chiang Mai, Doi Chiang Dao Wildlife Sanctuary (E); Middleton et al. 5030, Chiang Mai, Doi Ang Khang (E).
Whole plant from above
Whole plant from below
Rhizome and base of fronds
Upper surface of frond
Older and younger sori
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