Athyrium mackinnonii (C.Hope) C.Chr.
Athyrium mackinnonii (C.Hope) C.Chr., Index Filic.: 143. 1905; Tardieu & C.Chr., Fl. Indo-Chine 7(2): 277. 1940; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 102. 1967; Tagawa & K.Iwats., Fl. Thailand 3: 446, f. 48.2. 1988; Boonkerd & Pollawatn, Pterid. Thailand: 189. 2000. – Asplenium mackinnonii C.Hope, J. Bot. 1896: 124.
Terrestrial. Rhizome erect, with a few fronds at apex, scaly; scales narrow with long-tailed apex, up to 6 by 0.8 mm, dark brown, entire. Stipes up to 20 cm long, stramineous, dark brown and scaly at base. Laminae broadly oblong, acute at apex, up to 30 by 20 cm, bipinnate-tripinnatifid; pinnae about 10 pairs, lower pinnae stalked, ascending, oblong-lanceolate, up to 11 by 5 cm, the upper pinnae becoming smaller upwards; pinnules subsessile or shortly stalked, oblong, oblique, moderately acute to rounded at apex, truncate to auricled at anterior and cuneate at posterior bases, about 2.5 by 1 cm; ultimate segments oblong, rounded at apex, distinctly toothed; papyraceous to subcoriaceous; veins pinnate, veinlets simple or rarely forked, ending in teeth at margin of segments. Sori oblong, usually close to costules; indusia opening anteriorly, oblong, crenate at margin .
Distribution in Thailand
NORTHERN: Chiang Mai, Phitsanulok; NORTH-EASTERN: Loei; SOUTH-EASTERN: Chanthaburi.
India, SW China and Indochina.
On rather dry mountain slopes in dense evergreen forests at 1100–l300 m alt.
Proposed IUCN Conservation Assessment
Least Concern (LC). This species is widespread and not under any known threats.
Voucher specimens - Thailand
Middleton et al. 4497, Chiang Mai, Doi Inthanon National Park (E).
Lower surface of lamina and sori
Site hosted by the Royal Botanic Garden Edinburgh. Content managed by Stuart Lindsay, Gardens by the Bay, Singapore and David Middleton, Singapore Botanic Gardens. Last updated 17 January 2018.