Family

Pteridaceae, subfamily Cryptogrammoideae

Nomenclature

Coniogramme procera Fée, Mém. Soc. Sci. Nat. Strasbourg 6(1): 22. 1865; Ching, Icon. Filic. Sin. 4: pl. 168. 1937; Tagawa & K.Iwats., SouthE. Asian Stud. 5: 107. 1967; Tagawa & K.Iwats., Fl. Thailand 3: 191, f. 14.2. 1985; Boonkerd & Pollawatn, Pterid. Thailand: 122. 2000.

Description

Rhizome creeping, thick, covered with scales. Stipes stramineous, thick, up to 50 cm long, 1 cm diam. near base, a little swollen and scaly at base, sparsely clad with minute scales or glabrescent upwards. Laminae bipinnate, oblong-subdeltoid in outline, up to 80 by 60 cm; Rachis and pinna-rachis like the upper parts of stipe, grooved on upper surface, glabrescent; lateral pinnae up to 10 pairs, lower 3–5 pairs pinnate, upper ones simple; leaflets narrowly oblong to oblong-subtriangular, caudate at apex, truncate or broadly cuneate or rarely subcordate at base, straight or more or less falcate, distinctly serrate at margin, (8–)15–20(–30) by (1.5–)2.5–3.5(–4.5) cm, herbaceous, soft, glabrous; costa prominently raised on lower surface, grooved on upper surface; veins raised on lower surface, a few times forked, free, hydathodes placed in marginal teeth. Sori extending along veins, from costa to midway to margin, exindusiate .

Distribution in Thailand

NORTHERN: Chiang Mai.

Wider Distribution

Himalaya, SW China and Taiwan.

Ecology

On wet floor of dense mossy-forests at about 2500 m on Doi Inthanon.

Proposed IUCN Conservation Assessment

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

Voucher specimens - Thailand

Middleton et al. 4910, Chiang Mai, Doi Inthanon National Park. Kew Mae Pan Trail (E).