Ferns of Thailand, Laos and Cambodia

Warning: count(): Parameter must be an array or an object that implements Countable in C:\Data\serverroots\htdocs\ThaiFerns\factsheets\functions.php on line 17

Family

Davalliaceae

Nomenclature

Davallia angustata Wall. ex Hook. & Grev., Icon. Filic.: t. 231. 1831; Nooteboom, Fl. Males., Ser. II, Ferns and Fern Allies 3: 247. 1998. – Humata angustata (Wall. ex Hook. & Grev.) J.Sm., J. Bot. 3: 416. 1841; Bedd., Handb. Ferns Brit. India: 47. 1883; Holttum, Rev. Fl. Malaya ed. 1, 2: 367, f. 212. 1955 [‘1954’]; Tagawa & K.Iwats., Acta Phytotax. Geobot. 23: 54. 1968; Tagawa & K.Iwats., Fl. Thailand 3: 167. 1985; Boonkerd & Pollawatn, Pterid. Thailand: 235. 2000. – Pachypleuria angustata (Wall. ex Hook. & Grev.) C.Presl, Epimel. Bot.: 98. 1851 [‘1849’]; Tagawa & K.Iwats., Fl. Thailand 3: 617. 1989. – Type: Wallich 242 (K holo; BR, P), Roxburgh, Prince of Wales Island.

Description

Rhizome long creeping, about 2 mm diam., glaucous, densely scaly throughout; scales gradually narrowing from oblong base towards tailed apex, about 5 by 1 mm, brown to darker. Stipes up to 3 cm long, winged on upper part, stramineous to pale green. Laminae simple, linear, gradually narrowing towards acute apex, round at base, entire, up to 15 by 1.5 cm; coriaceous, hairy on midrib underneath; veins once or twice forked near midrib, all free. Sori terminal, on veinlets, in one marginal row at each side of lamina; indusia round , up to 1 mm broad.

Distribution in Thailand

PENINSULAR: Songkhla, Yala.

Wider Distribution

W Malesia.

Ecology

On mossy tree trunks in dense forests.

Proposed IUCN Conservation Assessment

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

	Ferns of Thailand, Laos and Cambodia
Home \| Species Index \| Glossary
Davallia angustata Wall. ex Hook. & Grev. Warning: count(): Parameter must be an array or an object that implements Countable in C:\Data\serverroots\htdocs\ThaiFerns\factsheets\functions.php on line 17 Family Davalliaceae Nomenclature Davallia angustata Wall. ex Hook. & Grev., Icon. Filic.: t. 231. 1831; Nooteboom, Fl. Males., Ser. II, Ferns and Fern Allies 3: 247. 1998. – Humata angustata (Wall. ex Hook. & Grev.) J.Sm., J. Bot. 3: 416. 1841; Bedd., Handb. Ferns Brit. India: 47. 1883; Holttum, Rev. Fl. Malaya ed. 1, 2: 367, f. 212. 1955 [‘1954’]; Tagawa & K.Iwats., Acta Phytotax. Geobot. 23: 54. 1968; Tagawa & K.Iwats., Fl. Thailand 3: 167. 1985; Boonkerd & Pollawatn, Pterid. Thailand: 235. 2000. – Pachypleuria angustata (Wall. ex Hook. & Grev.) C.Presl, Epimel. Bot.: 98. 1851 [‘1849’]; Tagawa & K.Iwats., Fl. Thailand 3: 617. 1989. – Type: Wallich 242 (K holo; BR, P), Roxburgh, Prince of Wales Island. Description Rhizome long creeping, about 2 mm diam., glaucous, densely scaly throughout; scales gradually narrowing from oblong base towards tailed apex, about 5 by 1 mm, brown to darker. Stipes up to 3 cm long, winged on upper part, stramineous to pale green. Laminae simple, linear, gradually narrowing towards acute apex, round at base, entire, up to 15 by 1.5 cm; coriaceous, hairy on midrib underneath; veins once or twice forked near midrib, all free. Sori terminal, on veinlets, in one marginal row at each side of lamina; indusia round , up to 1 mm broad. Distribution in Thailand PENINSULAR: Songkhla, Yala. Wider Distribution W Malesia. Ecology On mossy tree trunks in dense forests. Proposed IUCN Conservation Assessment Least Concern (LC). This species is widespread and not under any known threat. Warning: count(): Parameter must be an array or an object that implements Countable in C:\Data\serverroots\htdocs\ThaiFerns\factsheets\functions.php on line 17
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 24 January 2012