Family

Polypodiaceae

Nomenclature

Oreogrammitis dorsipila (Christ) Parris, Gard. Bull. Singapore 58: 259. 2007. – Polypodium dorsipilum Christ in Warb., Monsunia 1: 59. 1900. – Grammitis dorsipila (Christ) C.Chr. & Tardieu, Not. Syst. 8: 179. 1939; Tardieu & C.Chr., Fl. Indo-Chine 7(2): 524. 1941; Copel., Philipp. J. Sci. 80: 234, f. 91. 1951; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 61 1967; Tagawa & K.Iwats., Fl. Thailand 3: 582. 1989; Boonkerd & Pollawatn, Pterid. Thailand: 291. 2000.

Description

Rhizome short, creeping or ascending, slender, bearing several fronds in a tuft, densely scaly; scales lanceolate, acute at apex, about 3 by 0.5 mm, entire, membranous, pale brown. Stipes short, hardly distinct from the base of laminae, winged, hairy with shining brown setose patent hairs up to 1 mm in length. Laminae simple, linear, moderately acute at apex, entire or slightly wavy at margin, 3–7 cm by 2–6 mm, veins hardly visible, forked, the acroscopic branches short, ending in distinct hydathodes on upper surface; coarsely leathery, hairy throughout. Sori dorsal on short acroscopic branches of veins, costal to submarginal, round or oblong, not fusing to those adjacent .

Distribution in Thailand

SOUTH-WESTERN: Prachuap Khiri Khan; CENTRAL: Nakhon Nayok; PENINSULAR: Phangnga.

Distribution in Laos

Savannakhet.

Distribution in Cambodia

Kampot.

Wider Distribution

S Japan, Ryukyus, S China and Indochina.

Ecology

On mossy tree trunks in light shade along rivers at medium altitudes; rather rare.

Proposed IUCN Conservation Assessment

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

Voucher specimens - Cambodia

Bouillod 19, Kampot, Kamchay (P).