Microlepia firma Mett. ex Kuhn
Microlepia firma Mett. ex Kuhn, Linnaea 36: 146. 1869; Sledge, Kew Bull. 11: 529. 1956; Ching, Fl. Reipubl. Popularis Sin. 2: 231. 1959; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 72. 1967; Tagawa & K.Iwats., Fl. Thailand 3: 116. 1979; Boonkerd & Pollawatn, Pterid. Thailand: 87. 2000.
Microlepia hirta auct. non (Kaulf.) C.Presl: C.Chr., Contr. U.S. Natl. Herb. 26: 332. 1931.
Rhizome thick, long creeping, about 7 mm diam., very densely covered with setose shining deep brown hairs of about 3 mm long. Stipes about 1 cm apart, more than 5 mm diam., stramineous, densely hairy at base, sparsely hairy upwards or glabrescent in the older ones, up to 80 cm long; lamina quadripinnatifid, oblong-subdeltoid, acute to acuminate at apex, up to 70 cm long, 50 cm wide; rachis like the upper part of stipes, hairy on the under surface, more densely upwards; pinnae more than 10 in pairs, the upper ones gradually reducing in size, the lowest ones the largest, the larger 10–15 cm apart, with stalks of more than 3 cm, subtriangular, acuminate at apex, cuneate at base, up to 25 cm long, 20 cm wide; costa grooved on upper surface, hairy beneath; the larger pinnules oblong-subdeltoid to oblong-lanceolate, slightly falcate, gradually narrowing towards caudately acute apex, unequally cuneate and distinctly stalked at base, up to 12 cm long, 5 cm wide, the distal pinnules smaller in size, less dissected and sessile; costules strigose-hairy on the underside; larger ultimate segments pinnatisect, acute to acuminate at apex, the smaller subentire to entire, round at apex; the ultimate lobes oblong to spathulate, obscurely undulate or entire, round at apex; veins pinnate, raised on both surfaces, hairy underneath, chartaceous, deep green above and green below. Sori at sinus between the teeth of ultimate segments somewhat raised on the upper surface; indusia cup-shaped densely hairy .
Distribution in Thailand
NORTHERN: Chiang Mai.
E Himalaya to SW China (Yunnan) and Upper Burma, also in Sri Lanka.
On clayey soil in dense lower montane forest above 1800 m alt.
Proposed IUCN Conservation Assessment
Least Concern (LC). This species is widespread outside Thailand and not under any known threat.
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 16 November 2016.