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Dinghushan | Family List | Athyriaceae | Diplazium

Diplazium donianum (Mott.) Tard.-Blot.

双盖蕨

Description from Flora of China

Rhizome long creeping or creeping to oblique, 3-4(-8) mm in diam., with black, dense, fleshy, robust roots, apex densely scaly; scales brown to dark brown, lanceolate, thick, margin toothed; fronds caespitose or approximate. Fertile fronds up to ca. 80 cm; stipe brown-black at base, upward stramineous or brown-yellow-stramineous, 25-50 cm, 2-3 mm in diam., base densely scaly, upward gradually glabrous, grooved abaxially; rachis gray-brown-stramineous, glabrous; lamina 1-imparipinnate, elliptic or ovate-elliptic, 25-40 × 15-25 cm; lateral pinnae usually 2-5 pairs, all equal in size, subopposite or upper pinnae alternate, oblique, basal pinnae with short stalk 2-4 mm, upper pinnae sessile, ovate-lanceolate or elliptic, 10-20 × 3-5 cm, long acuminate at apex, often spreading or slightly subfalcate, base rounded-cuneate or subrounded, margin entire, repand, or lobed, apex serrate or crenate, incurved when dry; costae raised, rounded abaxially, shallowly grooved on adaxial side; veinlets 3-5 per group, straight. Lamina leathery or thickly papery, gray-green or brown-green when dry. Sori and indusia long linear, oblique or slightly oblique, often from midrib to laminar margin, on all veinlets, single or double. Spores semicircular in equatorial view, perispore hyaline, wide, with few rugate, not prominent granular projections.

Evergreen broad-leaved forests, beside streamlets; 100-1600 m. Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hainan, Taiwan, Yunnan [Bhutan, N India, Japan, Myanmar, Nepal, Vietnam].

生活型: 草本

栽培植物: 野生

特征: 草本;

生境: 生于自然林下阴湿处

用途: 全草药用,清热利湿、凉血解毒,治黄疸、外伤出血、蛇伤。

门中名: 蕨类植物门

中文别名: 大羽双盖蕨


 

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