Family

Dryopteridaceae

Nomenclature

Dryopteris hirtipes (Blume) Kuntze, Rev. Gen, Pl. 2: 813. 1891; C.Chr., Contr. U.S. Natl. Herb. 26: 330. 1931; Ching, Bull. Fan Mem. Inst. Biol. 8: 407. 1938; Holttum, Dansk Bot. Ark. 20: 30. 1961; Holttum, Rev. Fl. Malaya, ed. 2, 2: 635. 1968; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 95. 1967; Tagawa & K.Iwats., Fl. Thailand 3: 347, f. 31.1 & 31.2. 1988; Boonkerd & Pollawatn, Pterid. Thailand: 203. 2000. – Aspidium hirtipes Blume, Enum. Pl. Javae: 148. 1828. – Lastrea hirtipes (Blume) T.Moore, Index Filic.: 85. 1858; Bedd., Handb. Ferns Brit. India: 232, f. 120. 1883.

Description

Terrestrial. Rhizome short, erect; oblong-lanceolate with long tail, up to 25 by 5 mm, brown to dark; membranous, entire. Stipes stramineous, densely scaly at base, more sparsely upwards, up to 60 cm long. Laminae pinnate, lanceolate, caudate-acute at apex, slightly narrowing at base, up to 85 by 45 cm; rachis grooved on upper surface, densely scaly throughout with narrow, brown to nearly black scales up to 8 mm long; pinnae more than 20 pairs, lower pinnae falcate, linear-lanceolate, caudate-attenuate, truncate or subcordate at base, subsessile or very shortly stalked, up to 20 by 2 cm, lobed to a quarter way towards costa, upper pinnae gradually becoming smaller upwards, decurrent at base; costa nearly at right angle to rachis, distinctly raised on lower surface, grooved above; lobes subdeltoid, oblique, round to acute at apex, entire, up to 5 by 6 mm; chartaceous, deep green, glabrous. Sori in two or three indistinct rows near costa, leaving marginal half of lamina sterile, indusiate; indusia round-reniform, small, fugacious, glabrous .

Distribution in Thailand

NORTHERN: Chiang Mai; NORTH-EASTERN: Phetchabun, Loei.

Wider Distribution

Sri Lanka, S India, W Malaysia, Sumatra, Java, Borneo and the Philippines.

Ecology

On humus-rich mountain slopes in light or deep shade at 1200–1600 m alt.

Similar species

Athyrium cuspidatum (Bedd.) M.Kato

Proposed IUCN Conservation Assessment

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

Voucher specimens - Thailand

Middleton et al. 4468, Chiang Mai, Doi Suthep-Doi Pui National Park. San Gou on way to Doi Pui (E).