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FOC | Family List | FOC Vol. 2-3 | Cystopteridaceae | Gymnocarpium

5. Gymnocarpium remotepinnatum (Hayata) Ching, Icon. Fil. Sin. 4: t. 172. 1937.

细裂羽节蕨 xi lie yu jie jue

Dryopteris remotepinnata Hayata, Suppl. Icon. Pl. Formosan. 6: 108. 1917, based on D. remota Hayata, J. Coll. Sci. Imp. Univ. Tokyo 30(1): 421. 1911, not (A. Braun) Hayek (1908); Gymnocarpium remotum Ching; Thelypteris remotepinnata (Hayata) Alston.

Rhizomes slender, creeping, with sparse brownish ovate-lanceolate scales. Fronds distant; fertile fronds 20-30 cm; stipe stramineous, (10-)12-20 cm, slender, fragile, sparsely scaly at base; lamina 3-pinnate or 3-pinnate-pinnatifid, triangular, 10-14 × 6-9 cm, thinly herbaceous, base subtruncate, apex acuminate; pinnae 5 or 6 pairs, opposite, basal 2 pairs shortly stalked, upper pinnae sessile, basal pinnae largest, narrowly triangular, 6-8 × 5-6 cm, base subtruncate, stalk 1-2.2 cm, articulate to rachis, 2-pinnate, apex acuminate, spreading; pinnules 5 or 6 pairs, opposite, oblong-lanceolate, 1.5-2 × ca. 1 cm, base broadly rounded, sessile, apex acuminate, spreading; pinnule segments or secondary pinnules narrowly oblong, separate or lobed to costular wings, entire but lobed on basiscopic side, apex rounded-obtuse; second basal pair of pinnae 2-3 cm apart from basal pinnae, smaller, ascending, oblong, falcate, base rounded and equilateral, sessile; upper pinnae gradually smaller than second basal pinnae; veins pinnate in segment, simple, very oblique, visible abaxially; lamina glabrate, abaxial surface of rachis and costae eglandular. Sori small, brown, orbicular, exindusiate, abaxial on veins. 2n = 80*.

● Coniferous forests, on rocks at forest margins; 2500-3400 m. Taiwan, NW Yunnan.


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