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Chinese Plant Names | Family List | Dryopteridaceae | Dryopteris

Dryopteris nyingchiensis Ching


Description from Flora of China

Plants 35-50 cm tall. Rhizome erect, short; scales of rhizome and stipe base dense, ferruginous or brown, ovate-lanceolate, up to 2.5 cm, apex narrowly subulate and twisted. Fronds caespitose; stipe amber or stramineous, 7-13 cm, 1.5-2 mm in diam., sparsely scaly above base; lamina oblong-lanceolate, 30-40 × 12-16 cm, bipinnate, not narrowed to base, apex acuminate; pinnae 15-20 pairs, alternate, lower ones subopposite, nearly spreading, approximate, basal pair similar and equal to upper pairs, middle pinnae oblong-lanceolate, 6-8 × 2-2.5 cm, widest at base, base truncate, symmetrical, shortly stalked, apex long acuminate; pinnules 10-15 pairs, approximate, oblong, usually ca. 1 cm, basal ones longer than others, ca. 4.5 mm wide, not narrowed upward, margin entire, apex rounded, with sharp teeth, basal pinnule separated from next, remainder connate by narrow wing. Lamina thinly papery, both surfaces subglabrous; costae smooth, with sparse, narrowly lanceolate, dark brown or black scales; veins 6 or 7 pairs, forked, obscure. Sori confined to upper part of lamina, at middle of pinnae, 2-4 pairs on each pinnule, sterile at apices; indusia orbicular-reniform, thickly papery, everted at maturity.

● Alpine Pinus forests or coniferous and broad-leaved mixed forests; 2900-3000 m. Xizang, Yunnan.


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