Volume 3 > Part 2 > Year 1989 > Page 274 > Aspleniaceae > Asplenium

14. Asplenium thunbergii Kunzewfo-0001108108

Linnaea 10: 517. 1836; Schelpe, J. S. African Bot. 29: 92. 1963; Holttum, Rev. Fl. Malaya ed. 2. 2: 634. 1968.

Accepted Name : This is currently accepted.

Synonyms & Citations :

Description : Rhizome short, suberect; scales subdeltoid with acuminate apex, up to 3 by 0.8 mm, dark brown to nearly black and clathrate in central portion, pale brown, thin-walled at edges with irregular small projections at margin. Stipe up to 7 cm long, green to brownish, minutely scaly or glabrescent. Lamina bipinnate- tripinnatifid, elliptic in outline, moderately acute at apex, subtruncate at base, up to 20 by 6 cm; rachis with the wings curved upwards and continuous to lamina; lateral pinnae about 15 pairs, shortly stalked with narrowly winged stalks, elliptic, round to obtuse at apex, auricled at acroscopic base, subdimidiate at basiscopic base, up to 4 by 1.5 cm; costa winged and just like the ultimate segments which are narrowly lanceolate, oblique, up to 7 by 1.2 mm, rounded at apex, entire, basal acroscopic ones once or twice forked, one-nerved, chartaceous, glabrous. Sori along veins, occupying posterior half of ultimate segments; indusia thin but firm, persistent, reaching the margin or segments, thus apparently bilobed opening outwards.

Thailand : PENINSULAR: Phangnga (Khao Bangto), Nakhon Si Thammarat (Khiriwong).

Distribution : Indochina, W Malesia (type from Java).

Ecology : On trees or on mossy rocks in evergreen forests at medium altitudes (about 900 m).

E-version notes : For more details see Ferns of Thailand, Laos and Cambodia.