Polystichum shensiense Christ

Species

Pteridophytes > Polypodiales > Dryopteridaceae > Dryopteridoideae > Polystichum

Characteristics

Plants summer-green. Rhizome erect, densely covered with lanceolate brown or light brown scales. Fronds 12-24 cm; stipe stramineous, 3-10 cm, ca. 1 mm in diam. at base, lower part persistent, with few ovate and lanceolate light brown scales. Lamina bipinnatipartite, linear-oblanceolate or oblanceolate, 11-30 × 1.2-2.4 cm, slightly contracted at base, acuminate; rachis without proliferous bulbils, both surfaces with few scales; scales light brown, lanceolate and linear. Pinnae 24-32 pairs, alternate, ascendant, slightly more distant from one another toward lamina base, sessile, narrowly ovate or narrowly deltoid-ovate, middle pairs 6-15 × 4-6 mm, bases broadly cuneate or rounded-cuneate, auriculate acroscopically and basiscopically, pinnatifid to or near to pinna rachis, apices acute or obtuse. Lobes 4-6 pairs, alternate, slightly ascendant, obovate to ovate, apices acuminate and often with several acute teeth; both surfaces glabrous or with few lanceolate light brown microscales; frond texture papery; venation pinnate on lobes, indistinct on both surfaces. Sori on upper pinnae from middle of lamina upward, in 1 row on each side of costa or 1 or 2 on each side of midrib of lobe; indusia present, subentire.
Life form perennial
Growth form herb
Growth support -
Foliage retention evergreen
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Root system rhizome
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Environment

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Hardiness (USDA) 6-11

Usage

Uses medicinal
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Cultivation

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Distribution

Polystichum shensiense world distribution map, present in Bhutan, China, India, Nepal, and Pakistan

Identifiers

LSID urn:lsid:ipni.org:names:17260240-1
WFO ID wfo-0001123492
COL ID 4LN95
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Polystichum shensiense Nephrodium lichiangense Polystichum habaense Polystichum qamdoense Polystichum lichiangense Polystichum tumbatzense Polystichum melanostipes Polystichum frigidicola Polystichum obtusipinnum Polystichum nigrum Polystichum tibeticum Dryopteris lichiangensis Polystichum macrochlaenum Polystichum ellipticum Polystichum qamdoense var. elongatum Polystichum prescottianum var. shensiense