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

18. Cyrtomium urophyllum Ching, Bull. Chin. Bot. Soc. 2(2): 101. 1936.

线羽贯众 xian yu guan zhong

Cyrtomium salicipinnum Ching & K. H. Shing.

Plants 50-100 cm tall. Rhizome erect, densely covered with lanceolate brown scales. Stipe stramineous, 24-48 cm, 3-5 mm in diam. at base, lower portion densely scaly; scales brown, ovate or lanceolate, dentate. Lamina oblong-lanceolate, 34-70 cm, base slightly contracted, 1-imparipinnate, apex obtuse; rachis with sparse lanceolate or linear brown scales. Lateral pinnae 8-13 pairs, alternate, slightly ascendant, shortly stalked, linear-lanceolate; middle pinnae 9-20 × 1.5-2.5 cm, base cuneate, margins entire or acroscopic margins serrulate, apex acuminate or caudate; terminal pinna obovate or rhombic-ovate, forked or trifurcate, 6-10 × 4-9 cm; papery, glabrous on both surfaces, adaxially with raised dots corresponding to abaxial pits containing sori; venation pinnate, indistinct or slightly raised on both surfaces, veinlets anastomosing to form multiple rows of areoles. Sori throughout abaxial surface of pinnae; indusia margins denticulate or subentire. 2n = 82*.

● By streams in broad-leaved evergreen forests; 500-1700 m. Guangxi (Longsheng), Guizhou, Hunan (Jingxian, Xuefeng Shan), Sichuan (Daxiangling, Emei, Leibo, Pingshan), Yunnan (Suijiang).

Cyrtomium urophyllum is a species with sexual and apomictic forms.


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