黄山鳞毛蕨 huang shan lin mao jue

Dryopteris crassirhizoma Nakai subsp. whangshangensis (Ching) Fraser-Jenkins; D. huangangshanensis Ching.

Plants 60-80 cm tall. Rhizome erect, densely scaly; scales dark brown, lanceolate, ca. 2.5 cm, entire. Fronds caespitose; stipe stramineous, ca. 20 × 3-4 mm, with lanceolate or linear-lanceolate, fimbrillate-margined, brown scales; lamina lanceolate, 30-40 × 10-12 cm, widest at middle, once pinnate-pinnatifid, gradually narrowed toward base, apex acuminate; pinnae 20-22 pairs, spreading or ascending, lanceolate, 5-6 cm, ca. 1.2 cm wide at base, basal 3 or 4 pairs gradually shortened, shortest 3-3.5 cm, pinnatisect; segment ca. 16 pairs, oblong, 5-6 × 2-2.5 mm, apex truncate, coarsely 3- or 4-dentate. Lamina herbaceous; rachis densely clothed with linear or linear-lanceolate, fimbrillate, brown scales adaxially and lanceolate, fimbrillate, dark brown scales abaxially, costae and costules clothed with ovate, basally fimbrillate scales on both surfaces, upper ones pale; veins pinnate, not forked. Sori at apices of segments, 5 or 6 pairs on each segment, marginal, those on upper part of lamina often protruding out from margin at maturity; indusia pale brown, orbicular-reniform, entire.

● Forests; 1200-1800 m. Anhui, Fujian, Hubei, Jiangxi, Zhejiang.

Dryopteris submarginalis Ching, Boufford & K. H. Shing (J. Arnold Arbor. 64: 30. 1983, not (Langsdorf & Fischer) C. Christensen (1905), type from Hubei) was treated as a synonym of D. crassirhizoma subsp. whangshangensis by Fraser-Jenkins (Bull. Brit. Mus. (Nat. Hist.), Bot. 14: 212. 1986).

Dryopteris shuichangensis P. S. Chiu & G. Yao ex Ching (Bull. Bot. Res., Harbin 2(2): 63. 1982), described from Zhejiang (Shuichang), was treated as a hybrid between D. crassirhizoma subsp. whangshangensis and D. dickinsii by Fraser-Jenkins (loc. cit.: 206).