Family

Pteridaceae, subfamily Vittarioideae

Nomenclature

Haplopteris amboinensis (Fée) X.C.Zhang, Ann. Bot. Fennici 40: 460. 2003. – Vittaria amboinensis Fée, Mém. Foug., 3. Hist. Vittar. 14, t. 1, f. 1. 1852; Bedd., Handb. Ferns Brit. India: 407. 1883; Ching, Sinensia 1: 189. 1931; Tardieu & C.Chr., Fl. Indo-Chine 7(2): 199. 1940; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 112. 1967; Tagawa & K.Iwats., Fl. Thailand 3: 226. 1985; Boonkerd & Pollawatn, Pterid. Thailand: 135. 2000.

Vittaria forrestiana auct. non Ching: Tardieu &. C.Chr., Fl. Indo-Chine 7(2): 200, f. 24.1 & 24.2. 1940; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 112. 1967; Tagawa & K.Iwats., Fl. Thailand 3: 227, f. 17.6. 1985; Boonkerd & Pollawatn, Pterid. Thailand: 136. 2000.

Vittaria scolopendrina auct. non (Bory) Thwaites.: Holttum, Dansk Bot. Ark. 20: 34. 1961.

Description

Rhizome short creeping, about 3.5 mm diam., bearing a mass of roots, densely scaly throughout; scales narrow, subulate at apex, up to 10 by 1.5 mm, dark brown to blackish, clathrate, minutely toothed at margin. Stipes indistinct or distinct and up to 15 cm or more long, dark castaneous on the lower portion, very narrowly winged almost to the very base. Laminae linear-lanceolate, gradually narrowing towards acuminate to caudate apex, gradually narrowing downwards into wings of stipe, up to 70 cm long including stipe, up to 2.5 cm broad, the margin flat or slightly recurved, coriaceous or thicker; costa distinctly raised on lower surface, distinct on upper surface, veins hidden. Sori superficial, submarginal, almost throughout the margin of frond except for the apex and lowermost portion.

Distribution in Thailand

NORTHERN: Chiang Mai, Tak, Phitsanulok; NORTH-EASTERN: Loei; EASTERN: Nakhon Ratchasima; SOUTH-EASTERN: Chanthaburi; PENINSULAR: Krabi, Trang.

Distribution in Laos

Champasak.

Wider Distribution

N India, Burma, Laos, Vietnam, Malaysia, Indonesia.

Ecology

On tree trunks or in crevices in sandstome rocks, usually in evergreen forests at medium or high altitudes.

Proposed IUCN Conservation Assessment

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

Notes

This species was reported as occurring in Cambodia in the Flora of Thailand account.  However, we have found no material from Cambodia.

Voucher specimens - Thailand

Middleton et al. 5084, Phitsanulok, Phu Hin Rong Kla National Park (E).

Voucher specimens - Cambodia

Poilane 15858, Champasak, Boloven Plateau (P).