Diplazium donianum (Mett.) Tardieu




Diplazium donianum (Mett.) Tardieu, Asplen. Tonkin: 58, t. 5. 1932; Tardieu & C.Chr., Fl. Indo-Chine 7(2): 249. 1940; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 102. 1967; Holttum, Rev. Fl. Malaya, ed. 2, 2: 637. 1968; Tagawa & K.Iwats., Fl. Thailand 3: 455, f. 48.4. 1988; Boonkerd & Pollawatn, Pterid. Thailand: 192. 2000. – Asplenium donianum Mett., Fil. Lechl.: 177. 1859.

Athyrium bantamense auct. non (Blume) Milde: Bedd., Handb. Ferns Brit. India: 177, f. 86. 1883; Christ, Bot. Tidsskr. 24: 108. 1901; Holttum, Dansk Bot. Ark. 20: 32. 1961.


Similar to Diplazium bantamense , different in: rhizome creeping, 3–4 mm diam., blackish, scaly on younger part; lateral pinnae 1–4 pairs, stalks distinct, more than 5 mm long, cuneate at base; coriaceous or fleshy; rachis never gemmiferous; sori usually elongate along the whole length of veinlets.

Distribution in Thailand

NORTHERN: Chiang Mai, Tak, Phitsanulok; NORTH-EASTERN: Loei; CENTRAL: Nakhon Nayok; SOUTH-EASTERN: Trat; PENINSULAR: Nakhon Si Thammarat.

Distribution in Laos


Distribution in Cambodia


Wider Distribution

N India to S China and Taiwan, north to S Japan, south to Indochina.


On mountain slopes in light shade or in dense evergreen forests at low elevations lower than 800 m alt.

Proposed IUCN Conservation Assessment

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


The Doi Suthep plant has 4–5 pairs of very narrow lateral pinnae, 2–3 cm in breadth and rounded at base .

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