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FOC | Family List | FOC Vol. 2-3 | Dryopteridaceae | Arachniodes

7. Arachniodes tsiangiana (Ching) T. Nakaike, J. Phytogeogr. Taxon. 49: 20. 2001.

黔蕨 qian jue

Phanerophlebiopsis tsiangiana Ching, Acta Phytotax. Sin. 10: 116. 1965; Dryopteris tsiangiana (Ching) R. M. Tryon & A. F. Tryon.

Rhizome long creeping, densely clothed with brown, lanceolate scales. Fronds 45-58 cm; stipe stramineous, 20-25 cm, 2-3 mm in diam., base with scales similar to those on rhizome, glabrescent upward; lamina 1-pinnate, turning grayish green when dried, broadly lanceolate, 20-33 × 10-12 cm, papery or thinly leathery, glabrous on both surfaces or bearing sporadic brown linear-lanceolate scales along axes abaxially, toward apex acuminate and ending with a distinct terminal pinna, rachis glabrescent; lateral pinnae 6-8 pairs, alternate or lower pairs opposite, spreading, stalked, lanceolate, 7-8 × 1.5-2 cm, base symmetrical, cuneate, apex acuminate, margin crenulate-serrulate, teeth non-aristate; terminal pinna similar to lateral ones in size, usually forked at base; veins pinnate, veinlets 2 or 3 pairs on each set of lateral veins, simple or forked. Sori terminal on veinlets, in 2 rows on each side of pinna axis (midvein); indusia brown, membranous, and fugacious.

● Shaded damp places in evergreen broad-leaved forests; 400-700(-1300) m. SE Guizhou.


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