Diplazium malaccense C.Presl

Family

Athyriaceae

Nomenclature

Diplazium malaccense C.Presl, Epimel. Bot.: 86. 1851 [‘1849’]; Tardieu & C.Chr., Fl. Indo-Chine 7(2): 258. 1940; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 104. 1967; Tagawa & K.Iwats., Acta Phytotax. Geobot. 23: 56. 1968; Tagawa & K.Iwats., Fl. Thailand 3: 458. 1988; Boonkerd & Pollawatn, Pterid. Thailand: 154. 2000; Boonkerd & Pollawatn, Pterid. Thailand: 193. 2000. – Athyrium malaccense (C.Presl) Holttum, Rev. Fl. Malaya ed. 1, 2: 552. 1955 [‘1954’].

Description

Rhizome, short, erect, bearing wiry roots; scales narrow, up to 12 by 1.5 mm, concolorous, dark brown, with blackish margin. Stipes stramineous with brown scaly base, about 25 cm long, grooved on adaxial surface. Frond about 50 by 25 cm, pinnate, oblong with acuminate apex; pinnae patent or ascending, shortly stalked, cuneate at base, attenuate at apex, up to 14 by 2.3 cm, lobed to 2/3 way to costa; rachis and costa minutely scaly or glabrous; lobes oblong to ovoid, rounded to obtuse at apex, entire, up to 7 mm broad; papyraceous or firmer, green; veins pinnate, veinlets simple. Sori on all veinlets, diplazioid on basal acroscopic veinlets; indusia drying brown, persistent .

Distribution in Thailand

PENINSULAR: Surat Thani, Trang, Yala.

Wider Distribution

Indochina to Malesia.

Ecology

On mountain slopes in dense evergreen forests at medium altitudes.

Proposed IUCN Conservation Assessment

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

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