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FOC | Family List | FOC Vol. 2-3 | Thelypteridaceae | Cyclosorus

22. Cyclosorus attenuatus Ching ex K. H. Shing, Fl. Reipubl. Popularis Sin. 4(1): 341. 1999.

下延毛蕨 xia yan mao jue

Cyclosorus mollissimus Ching ex K. H. Shing.

Plants 50-100 cm tall. Rhizomes shortly creeping, including stipe bases with lanceolate dark brown scales. Fronds approximate; stipes 25-45 cm, stramineous; laminae 30-70 × 20-40 cm, bases not narrowed or slightly so, apices caudate; lateral pinnae 10-20 pairs, lanceolate, middle pinnae 8-20 × 2-3.5 cm, bases cuneate to truncate, apices long acuminate; proximal pinnae slightly shortened, shortly decurrent toward bases, shortly stalked; apical pinnae similar to lateral ones with several longer segments at bases; middle pinnae lobed to 1/3 toward costae, sometimes only crenate; segments 25-40 pairs, falcate-triangular, 2-5 × ca. 3 mm, entire, obtuse or acute at apices; veinlets 6-10 pairs, proximal 2-5 pairs anastomosing, next 1-1.5 pairs running to sinus membrane. Laminae papery, grayish green when dried, with several acicular hairs along costae adaxially, abaxial surface with dense long acicular hairs, and short hairs between veins. Sori orbicular, medial; indusia densely hairy. Sporangia bearing several hairs on capsules. Spores shortly and thickly cristate.

● Wet places in forests, forest margins; 300-1100 m. SE Yunnan.


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