Coniogramme procera Fée

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).

Frond

Frond

Rhizome

Rhizome

Rhizome scales

Rhizome scales

Crozier

Crozier

Young sori

Young sori

Mature sori

Mature sori

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