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Chinese Plant Names | Family List | Dryopteridaceae | Polystichum

Polystichum bakerianum (Atkinson) Diels


Description from Flora of China

Aspidium prescottianum Wallich ex Mettenius var. bakerianum Atkinson ex C. B. Clarke, Trans. Linn. Soc. London, Bot. 1: 510. 1880 ["Bakeriana"]; A. bakerianum (Atkinson ex C. B. Clarke) Atkinson ex Baker; Polystichum prescottianum (Wallich ex Mettenius) T. Moore var. bakerianum (Atkinson ex C. B. Clarke) Beddome.

Plants summer-green. Rhizome erect or ascending, densely covered with lanceolate reddish brown scales. Fronds 60-80 cm; stipe stramineous, 24-35 cm, 4-5 mm in diam. at base, densely scaly; scales reddish brown, lanceolate and linear, lower part of stipe mixed with lanceolate large scales. Lamina bipinnate, narrowly lanceolate or narrowly elliptic, 60-72 × 18-24 cm, slightly contracted toward base, acuminate; rachis without proliferous bulbils, stramineous, both surfaces densely scaly; scales brown, linear and filiform. Pinnae 28-40 pairs, alternate, attached at nearly right angles to rachis, shortly stalked, linear-lanceolate, middle pairs 9-12 × 1.8-2.5 cm, bases obliquely broadly cuneate or nearly truncate, auriculate acroscopically, pinnate, apices long acuminate. Pinnules 16-20 pairs, nearly opposite, slightly ascendant, obliquely oblong or ovate, 0.8-1.4 cm × 5-6 mm, bases obliquely cuneate, auriculate acroscopically, margins with acute large teeth or pinnatilobate, apices obtuse or acute; filiform microscales on abaxial surface denser than on adaxial surface; frond texture thinly papery; venation pinnate, distinct on both surfaces. Sori in 1 row on each side of pinnule midrib; indusia present, toothed.

Alpine coniferous forests, alpine Quercus forests, meadows; 2900-4000 m. W Sichuan, S and SE Xizang, NW Yunnan [Bhutan, N India, Kashmir, Nepal, Pakistan].


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