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

45. Polystichum subfimbriatum W. M. Chu & Z. R. He, Acta Phytotax. Sin. 36: 382. 1998.

拟流苏耳蕨 ni liu su er jue

Plants evergreen. Rhizome erect, densely covered with broadly lanceolate brown scales. Fronds ca. 25 cm; stipe stramineous, 4-10 cm, ca. 2 mm in diam. at base, indistinctly canaliculate adaxially, densely scaly; scales brown, lanceolate and linear, toothed. Lamina 1-pinnate, lanceolate or linear-oblanceolate, 13-20 × 1.5-3 cm, contracted at base, acuminate; rachis without proliferous bulbils, adaxially scaly, scales brown, linear or narrowly lanceolate, twisted, abaxially densely scaly, scales brown, narrowly lanceolate, twisted. Pinnae 22-30 pairs, alternate, lower pairs slightly angled basiscopically, other pairs attached at right angles to rachis, shortly stalked, approximate, ovate, middle pinnae 8-15 × 6-8 mm, bases obliquely broadly cuneate, sometimes acroscopic bases with semi-orbicular auricles, margins slightly revolute with spinulose teeth, sometimes lower part shallowly lobed, apices rounded with acute tips; abaxially scaly; microscales yellowish brown, filiform, twisted; frond texture thinly leathery, venation pinnate, lateral veins forked, indistinct on both surfaces. Sori in 1 row on each side of midrib; indusia present, margins irregular.

● Under bushes; ca. 2000 m. NE Yunnan (Yiliang, Zhenxiong).

Polystichum subfimbriatum is similar to P. fimbriatum, but it is smaller, its rachis scales are narrowly lanceolate and twisted, and its pinna auricles are semi-orbicular.


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