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

18. Dryopteris pycnopteroides (Christ) C. Christensen, Index Filic., Suppl. 1906-1912: 38. 1913.

密鳞鳞毛蕨 mi lin lin mao jue

Aspidium pycnopteroides Christ, Bull. Acad. Int. Géogr. Bot. 16: 116. 1906.

Plants 60-100 cm tall. Rhizome erect, densely clothed with ovate-lanceolate, brown scales. Fronds caespitose; stipe brown or stramineous at base, 20-30 cm, densely clothed with ovate, entire, glossy, brown scales, these usually appressed but lanceolate and spreading upward; lamina lanceolate, 40-70 × 15-20 cm, once pinnate, base slightly narrowed, apex acuminate; pinnae 18-30 pairs, remote (lower ones 3-4 cm apart), lanceolate, 10-13 × 1.5-2.5 cm, base truncate, shortly stalked, apex acuminate or caudate-acuminate; apex of segments with 1 or 2 beak-shaped teeth. Lamina herbaceous or papery, both surfaces glabrous; rachis and costa clothed with lanceolate or linear, brown scales abaxially; veins pinnate, 3 or 4 pairs on each segment, not forked, slightly grooved adaxially, distinctly raised abaxially. Sori 2 or 3 pairs on each segment, abaxial on veins, nearer to costa than to margin; indusia orbicular-reniform, membranous, entire, readily deciduous at maturity.

● Streamsides in forests; 1800-2800 m. Guizhou, Hubei, Sichuan, NE and NW Yunnan [?Japan].

Dryopteris sunii Ching (Bull. Fan Mem. Inst. Biol., n.s., 1: 295. 1949), described from Sichuan, was treated as a synonym of D. pycnopteroides by Fraser-Jenkins (Bull. Brit. Mus. (Nat. Hist.), Bot. 14: 212. 1986).


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