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

Dryopteris yigongensis Ching


Description from Flora of China

Plants 40-55 cm tall. Rhizome erect, short, densely scaly; scales ferruginous, lanceolate, upper part subulate, ca. 2.5 cm. Fronds caespitose; stipe dark brown, 10-14 cm, ca. 2 mm in diam., base densely clothed with lanceolate, dark brown or almost black scales 1.5-2 cm; lamina oblong, 35-40 cm, 15-17 cm wide at middle, bipinnate, base slightly narrowed, apex acuminate; pinnae ca. 25 pairs, spreading, shortly stalked, 2-2.5 cm apart, middle pinnae ca. 8 cm, base 1.5-1.8 cm wide, basal pair lanceolate, 5-6 cm, base truncate, apex long acuminate; pinnules 14-16 pairs, nearly spreading, contiguous, 7-10 mm, basal pair not longer than upper ones, ca. 3.5 mm wide, narrowed toward truncate apex, entire or sparsely dentate, basal pinna lobes pinnatisect or fully pinnate. Lamina thinly papery, with many narrowly hairlike, fibrillose, pale brown scales on both surfaces, mainly on costae and costules. Fertile only in upper 1/3 of lamina. Sori 4 or 5 pairs on each segment, nearer to costa than to margin; indusia brown, somewhat thick, persistent.

Forests; 2500-2600 m. SE Xizang, NE Yunnan [India].


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