Family

Thelypteridaceae

Nomenclature

Thelypteris hirsutipes (C.B.Clarke) Ching, Bull. Fan Mem. Inst. Biol. 6: 314. 1936; Tardieu & C.Chr., Fl. Indo-Chine 7(2): 362. 1941; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 64. 1967; Tagawa & K.Iwats., Fl. Thailand 3: 406. 1988. – Nephrodium gracilescens var. hirsutipes C.B.Clarke, Trans. Linn. Soc. London, Bot. l: 514, t. 67, f. 1. 1880. – Lastrea hirsutipes (C.B.Clarke) Bedd., Suppl. Ferns Brit. Ind.: 52. 1892. – Coryphopteris hirsutipes (C.B.Clarke) Holttum in B.K.Nayar & S.Kaur, Companion Handb. Ferns Brit. India: 203. 1974; Holttum, Blumea 23: 27. 1976; Holttum, Fl. Males., Ser. II, Pterid. 1: 359, f. 4c. 1982 [‘1981’]; Boonkerd & Pollawatn, Pterid. Thailand: 222. 2000. – Type: (Holttum 1976): Clarke 18968, Assam, Khasya Hills, 1400 m (K).

Thelypteris angulariloba auct. non Ching: ; Mitsuta, Acta Phytotax. Geobot. 36: 148. 1985.

Description

Rhizome short creeping, with close fronds; scales sparse, small, up to 1.5 by 0.4 mm, bright brown, hairy. Stipes stramineous to castaneous, dark and densely hairy at base; hairs pale, patent, up to 2 mm long, multicellular. Laminae oblong, acute at apex, up to 40 by 15 cm; lower one or two pinnae reflexed, middle pinnae sessile, patent, acute to acuminate at apex, up to 9 by 1.8 cm, deeply lobed nearly to costa; segments oblong, rounded to obtuse at apex, softly papyraceous, green with round orange-red glands on undersurface; rachis and costa green to stramineous, hairy; veins pinnate, veinlets simple, all reaching the margin of segments, hairy as well as glandular. Sori medial or subcostular, large, up to 1 mm diam.; indusia round-reniform, persistent, hairy .

Distribution in Thailand

NORTH-EASTERN: Loei; PENINSULAR: Nakhon Si Thammarat.

Wider Distribution

E Himalaya to SW China and W Malesia.

Ecology

On mountain slopes in evergreen forests at medium elevations, 1100–1600 m alt.

Proposed IUCN Conservation Assessment

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