Asplenium nitidum Sw.
Asplenium nitidum Sw., Syn. Fil. (Swartz): 84, 280. 1806; Bedd., Handb. Ferns Brit. India: 157. 1883; Tardieu & C.Chr., Fl. Indo-Chine 7(2): 237, f. 27, 1. 1940; Tagawa & K.Iwats., Fl. Thailand 3: 286. 1985; Boonkerd & Pollawatn, Pterid. Thailand: 143. 2000. – Tarachia nitida (Sw.) C.Presl, Epimel. Bot. 83. 1851. – Asplenium spathulinum Kunze, Bot. Zeitung 6: 524. 1848. non J.Sm. ex Hook, Sp. Fil. 3: 170. 1860. - Type: Philippines, Luzon, or Peninsular Malaysia ("Malacca"), Cuming 376 (BM, E, MICH, P, UC, US).
Asplenium glaucophyllum Alderw., Bull. Jard. Bot. Buitenzorg, Ser.2, 7: 6. 1912; Holttum, Rev. Fl. Malaya ed. 1, 2: 440, f. 258. 1955 [‘1954’]; Tagawa & K.Iwats., Acta Phytotax. Geobot. 23: 55. 1968.
Rhizome short creeping, densely scaly; scales narrow, gradually narrowing from base to long-tailed apex, up to 1.5 cm long, 1 mm broad, entire and distinctly crisped, brown, finely clathrate. Stipes nearly black, glabrous, up to 40 cm long. Laminae bipinnate, elliptic or narrower, narrowing towards acuminate apex, slightly narrow at base, about 60 by 25 cm; rachis dark, glabrous, slightly grooved on upper surface; lateral pinnae more than 10 pairs, with stalks of about 1 cm, ascending, narrowly lanceolate, narrowing towards acuminate apex, truncate at base, up to 13 by 4 cm; costa wingless, grooved, glabrous; pinnules about 8 pairs below indistinctly lobed apical portion, shortly stalked, round to moderately acute at apex, truncate at acroscopic base, dimidiately cuneate at basiscopic base, up to 2.2 by 12 cm, shallowly toothed at margin, papyraceous, glabrous; veins subdichotomously 3 to 5 times forked, visible on both surfaces. Sori 5–7 mm long; indusia thin, pale.
Distribution in Thailand
Sri Lanka, S India, E Himalaya (Nepal to Assam) and W Malesia.
Asplenium affine Sw.
Proposed IUCN Conservation Assessment
Least Concern (LC). This species is widespread and not under any known threats.
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