All Floras      Advanced Search
Login | eFloras Home | Help
Chinese Plant Names | Family List | Dryopteridaceae | Dryopteris

Dryopteris polita Rosenst.


Description from Flora of China

Dryopteris chapaensis C. Christensen & Ching ex Ching; D. exindusiata Ching & P. S. Chiu; D. livida Ching & Chu H. Wang; D. viridis Ching.

Plants ca. 75 cm tall. Rhizome erect, scaly; scales dark brown, glossy, linear, ca. 2.5 mm, entire, apex long acuminate. Stipe pale stramineous distally, brown basally, 30-35 cm, ca. 3 mm in diam., narrowly grooved, glabrous, sparsely scaly; scales ferruginous, lanceolate; lamina deltoid, ca. 20 × 20 cm, widest at base, upper part oblong-falcate, pinnatipartite, apex narrowed, caudate, remotely serrate; pinnae 7-9 pairs, alternate, spreading, 3.5-5 cm apart, shortly stalked, middle pinnae linear-lanceolate, 5-8 × 1.5-2.5 cm, widest at base, slightly curved upward, base rounded-truncate, apex acuminate, shallowly serrate; segments obliquely oblong, obtuse, serrate, lower several pairs deltoid-lanceolate, 8-10 cm, base 3-4 cm wide, with 1 or 2 free pinnules at base, basal basiscopic pinnule largest; pinnules lanceolate, 2.5-3 cm, base 6-8 mm wide, rounded-truncate, sessile, apex obtuse, upper margin obtuse-serrate, lower margin lobed. Lamina herbaceous, glabrous; veins obscure adaxially, somewhat visible abaxially, pinnate, veinlets on upper part of lamina often simple, on lower part often forked. Sori 1-3 pairs on each segment, subapical on veinlets, exindusiate.

Evergreen broad-leaved forests; 600-2200 m. Hainan, Taiwan, Yunnan [Indonesia, Japan, Thailand, Vietnam].


Related Objects  

Flora of China  
  • Illustration
  • Illustration

     |  eFlora Home |  People Search  |  Help  |  ActKey  |  Hu Cards  |  Glossary  |