Family

Polypodiaceae

Nomenclature

Selliguea hirsuta (Tagawa & K.Iwats.) S.Linds., Edinburgh J. Bot. 66(2): 356. 2009. – Crypsinus hirsutus Tagawa & K.Iwats., Acta Phytotax. Geobot. 24: 176. 1970; Tagawa & K.Iwats., Fl. Thailand 3: 560, f. 56.7–8. 1989; Boonkerd & Pollawatn, Pterid. Thailand: 267. 2000.

Crypsinus trisectus auct. non (Baker) Tagawa: Mitsuta, Acta Phytotax. Geobot. 36: 148. 1985.

Description

Rhizome long creeping, 3–4 mm diam., more or less glaucous, densely scaly throughout; scales subulate, about 4 by 0.8 mm, dark brown, paler at edges, ciliate at margin; phyllopodia about 5 mm in height. Stipes stramineous, up to 12 cm long, densely hairy throughout. Laminae hastate or rarely with two lateral lobes on one side, up to 24 by 21 cm; lateral lobes ascending, slightly falcate, narrowly elliptic, gradually narrowing towards long-acuminate apex, up to 12 by 2–3 cm broad; apical lobes gradually narrowing towards long-acuminate apex, more or less constricted at base, up to 20 by 3.2 cm; midrib flat above, raised below, densely hairy.; main veins raised on both surfaces, ascending 5–12 mm apart from the next ones, veins visible or hardly so, forming copious anastomosis in larger areoles and included smaller areoles with included free veinlets, apex of free veinlets often thickened and distinct, papyraceous, rather densely hirsute on both surfaces and on margin, occasionally only sparsely hairy above and glabrous below, subentire or undulate at margin, not notched, narrowly margined with cartilaginous membrane; hairs small, coarse, unicellular or with a few cells in construction. Sori round, large, up to 3 mm diam., one between main veins, closer to midrib than to edges.

Distribution in Thailand

NORTHERN: Chiang Mai, Chiang Rai, Tak, Phitsanulok; NORTH-EASTERN: Loei.

Wider Distribution

Endemic to Thailand.

Ecology

Gregarious on rocks or rocky soil in exposed or comparatively dry places as well as in shaded or moist situations at 1000–1800 m alt.

Proposed IUCN Conservation Assessment

Least Concern (LC). Although endemic to Thailand this species is fairly widespread in the north, including in a number of protected areas, and not under any known threat.

Voucher specimens - Thailand

Suksathan 571, Chiang Mai (QBG); Middleton et al. 4995, Chiang Mai, Doi Chiang Dao Wildlife Sanctuary (E); Pooma et al. 6921, Tak (BKF, E); Middleton et al. 5065, Phitsanulok, Phu Hin Rong Kla National Park (E); Suksathan 2933, Phitsanulok (QBG); Intamusik 159, Loei (QBG).