Polystichum cyclolobum C.Chr.

Species

Pteridophytes > Polypodiales > Dryopteridaceae > Dryopteridoideae > Polystichum

Characteristics

Plants evergreen. Rhizome erect, densely covered with lanceolate brown scales. Fronds 12-25 cm; stipe stramineous, 2-12 cm, 1-4 mm in diam. at base, densely scaly; scales light brown, ovate and narrowly lanceolate. Lamina lanceolate, 8-25 × 1.8-5 cm, usually not contracted at base, bipinnatifid or rarely bipinnate and with 1 or 2 free pinnules, acuminate; rachis stramineous, without proliferous bulbils; scales light brown, linear-lanceolate or filiform, denser abaxially, linear-lanceolate scales with ciliate margins, filiform scales ciliate at base. Pinnae 15-26 pairs, alternate, slightly ascendant, ovate to narrowly ovate, 0.8-2.5 × 0.6-2 cm, obliquely truncate or nearly rounded, shortly stalked, pinnatifid or pinnate, acute or obtuse and mucronate. Lobes or pinnules 1-4 pairs, alternate, attached at right angles to rachis, obovate, rhombic-ovate, or oblong, basal acroscopic lobes or pinnules largest, margins entire or sometimes serrulate, apices obtuse and mucronate; abaxially scaly; microscales filiform, strongly ciliate at base; frond texture leathery; venation pinnate on lobes or pinnules, slightly raised abaxially, indistinct adaxially. Sori in 1 row on each side of midrib; indusia present, slightly incised.
Life form perennial
Growth form herb
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Foliage retention evergreen
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Root system rhizome
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Environment

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Hardiness (USDA) 7-11

Usage

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Cultivation

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Distribution

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

Identifiers

LSID urn:lsid:ipni.org:names:17288800-1
WFO ID wfo-0001127726
COL ID 4LMQM
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Polystichum cyclolobum Polystichum integrilimbum Polystichum pseudorhomboideum Polystichum delavayi Polystichum ilicifolium var. delavayi Polystichum stimulans var. delavayi