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Dinghushan | Family List | Dryopteridaceae | Arachniodes

Arachniodes amoena (Ching) ching

美丽复叶尔蕨

Description from Flora of China

Rumohra amoena Ching, Sinensia 5: 40-41. 1934; Polystichum amabile (Blume) J. Smith var. controversum Hance ex Y. C. Wu.

Rhizome creeping or ascending, stiff, 1-1.5 cm in diam., apex scaly; scales shiny castaneous, ovate-lanceolate, ca. 8 × 3 mm, firmly papery. Fronds remote or approximate, 0.4-1.1 m; stipe ochraceous or amber, 20-60 cm, 4-8 mm in diam., base with a tuft of imbricate scales similar to those on rhizome, upward sparsely scaly or glabrescent and glossy; lamina 3-pinnate(-pinnatifid), dark brown when dried, ovate-oblong or ovate-pentagonal, 20-60 × 25-45 cm, papery, base rounded, cordate, or hastate, apex caudate, with a conform terminal pinna, rachis sparsely scaly as distal portion of stipe or glabrescent; pinnae (1-)3-6(or 7) pairs, alternate, with 1-1.5 cm stalk, obliquely spreading; lowest pinna deltoid-ovate, 20-25 × 15-22 cm, apex with a conform terminal pinnule; primary pinnules 15-25 pairs, basal 1 or 2 pairs elongated and with ca. 1 cm stalk, distally sessile; elongated primary pinnules with secondary pinnules 10-20 pairs, shortly stalked or sessile, spreading, oblong, 1-2.5 × 0.5-0.8 cm, base acroscopically truncate, basiscopically cuneate, apex obtuse, margin especially on acroscopic side lobed or serrate, aristate, proximal pair(s) sometimes longer and deeply pinnatifid; upper 1 or 2(or 3) pairs of pinnae with basal pinnules elongated; axes and veins of ultimate segments occasionally with minute brown lanceolate scales abaxially. Sori terminal on veinlets, 3-5 pairs per ultimate pinnule, medial between margin and midvein of ultimate segment; indusia brown, membranous, entire, and fugacious.

● On shaded moss-covered rocks or ravines by streams, on ground in woods or under shrubs; 400-1700 m. Fujian, Guangdong, Guangxi, Guizhou, Hunan, Jiangxi, Zhejiang.

生活型: 草本

栽培植物: 野生

特征: 草本;

生境: 生于自然林中

门中名: 蕨类植物门

中文别名: 美丽汝蕨


 

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