Nephrolepis radicans (Burm.f.) Kuhn

Family

Lomariopsidaceae

Nomenclature

Nephrolepis radicans (Burm.f.) Kuhn, Ann. Mus. Bot. Lugduno-Batavi 4: 285. 1869; Tardieu & C.Chr., Fl. Indo-Chine 7(2): 288. 1940; Holttum, Rev. Fl. Malaya ed. 1, 2: 381. 1955 [‘1954’]; Tagawa & K.Iwats., Acta Phytotax. Geobot. 23: 54. 1967; Tagawa & K.Iwats., Fl. Thailand 3: 176. 1985; Boonkerd & Pollawatn, Pterid. Thailand: 239. 2000; Hovenkamp & Miyamoto, Blumea 50: 308. 2005. – Polypodium radicans Burm.f., Fl. Indica.: 233, t. 66, f. 3. 1768.

Lepidonevron volubile Fée, Mém. Foug., 5. Gen. Filic.: 301. 1852. – Nephrolepis volubilis (Fée) J.Sm., J. Bot. 3: 413. 1841; Bedd., Handb. Ferns Brit. India: 284. 1883.

Description

Rhizome short, suberect, 3–5mm diam., bearing a few fronds, a few thick wiry roots, and thick stolons; scales dense, gradually narrowing from round base to acute apex, distinctly bicoloured with dark brown central portion and pale thin edges, about 3 by 0.7 mm, appressed except for the narrow apical portion; runners slender at base, thickening to the size of stipe, climbing, producing frond-bearing stocks at irregular intervals, sparsely scaly. Stipes stramineous, up to 10 cm long, sparsely scaly. Laminae linear, up to 80 by 7 cm, narrowing towards both ends pinnate; middle pinnae larger, slightly falcate, moderately acute or round at apex, auricled at acroscopic base, up to 4 by 1 cm in sterile ones, subentire or slightly serrate in fertile pinnae; lower pinnae small and distant, papyraceous; veins hardly visible. Sori submarginal, round; indusia about 1 mm diam.

Distribution in Thailand

PENINSULAR: Yala.

Distribution in Laos

Luang Phrabang.

Distribution in Cambodia

Kampot, Ratanakiri.

Wider Distribution

India, Burma, Indochina and throughout Malesia and New Caledonia.

Ecology

Terrestrial in thickets at low altitudes.

Proposed IUCN Conservation Assessment

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

Voucher specimens - Cambodia

Matras 27, Ratanakiri, Ban Tuh (P).

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