Family

Polypodiaceae

Nomenclature

Goniophlebium manmeiense (Christ) Rödl-Linder, Blumea 34: 394. 1990. – Polypodium manmeiense Christ, Bull. Herb. Boiss. 6: 870. 1898; Ching, Contr. Inst. Bot. Natl. Acad. Peiping 2: 41. 1933; Tardieu & C.Chr., Fl. Indo-Chine 7(2): 535. 1941; Holttum, Dansk Bot. Ark. 20: 21. 1961; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 56. 1967; Tagawa & K.Iwats., Fl. Thailand 3: 568, f. 57.7 & 57.8. 1989; Boonkerd & Pollawatn, Pterid. Thailand: 284. 2000; Newman et al., Checkl. Vasc. Pl. Lao PDR: 30. 2007. – Metapolypodium manmeiense (Christ) Ching, Acta Phytotax. Sin. 16(4): 29. 1978.

Description

Rhizome long creeping, about 1.5 mm diam., dark green to brown, densely covered with scales; scales narrowly subtriangular, acuminate at apex, entire, up to 3 by 1 mm, dark greyish-brown. Stipes stramineous, 3–12 cm long, densely scaly at base. Laminae deeply pinnatifid, usually decurrent to the next lobes by very narrow wings of rachis less than 1 mm in breadth in the lower part, narrowly oblong with rather suddenly narrowing acuminate apex, 10–25(–34) by (2.4–)3–6.5 cm; lobes up to 35 (–50) pairs, narrowly lanceolate, patent except more or less deflexed lower one or two pair(s), about 3 by 0.5 cm, acute to moderately acute at apex, incised to undulate at edge at least at distal portion, upper ones rather suddenly becoming smaller, the apex usually forming lobed terminal pinnae, costa 5–7 mm from the next one, raised on both surfaces, glabrous, stramineous to darker, veins forked, ends of veinlets ending in elliptic hydathodes inside the margin of lobes; herbaceous, glabrous. Sori terminal or subterminal on acroscopic veinlets, medial, less than 1 mm diam., superficial or immersed in cavities.

Distribution in Thailand

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

Distribution in Laos

Salavan.

Wider Distribution

Sikkim, Upper Burma, SW China (Yunnan, type) and Laos.

Ecology

On mossy tree trunks in dense evergreen forests at high altitudes (1300–2300 m).

Proposed IUCN Conservation Assessment

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

Voucher specimens - Thailand

Middleton et al. 4916, Chiang Mai, Doi Inthanon National Park (E); Middleton et al. 5055, Chiang Mai, Doi Pha Hom Pok National Park (E).