Polystichum kungianum H.He & Li Bing Zhang

Species

Pteridophytes > Polypodiales > Dryopteridaceae > Dryopteridoideae > Polystichum

Characteristics

Plants ?evergreen. Rhizome erect or slightly prostrate, 0.5-2 cm, 2-3 mm in diam., up to 1.5 cm in diam. with base of remnant old stipes; scales dull brown, linear-lanceolate, ca. 3 × 0.8 mm, subentire; roots up to 10 cm, 3-4 mm in diam. Fronds 12-16 cm; stipe stramineous, 1.5-4.5 cm, 1-2 mm in diam. at middle; scales on basal stipe brown, narrowly deltoid-lanceolate, 3-4 × 0.3-1.2 mm, thinly papery, margins at base with outgrowths; outgrowths hairlike, tortuous and soft; margins upward sparsely fimbriate or subentire, apices filiform; scales on distal stipe similar but narrower, brown, mostly linear-lanceolate, up to 3 × 0.5 mm, apices filiform. Lamina 1-pinnate-pinnatifid, yellowish green adaxially, slightly paler abaxially, lanceolate, 5.5-12.5 × 1.5-2.5 cm, slightly narrower at base, acuminate toward apex; rachis 0.5-1.2 mm in diam. at middle, apex with a small proliferous bulbil, without flagelliform prolongation. Pinnae 18-22 pairs, 0.5-1.5 × 0.3-0.6(-0.8) cm, shortly stalked, alternate, lower pairs deltoid-lanceolate, attached nearly at right angles to rachis, upper pairs shorter and rhombic-lanceolate, spreading to slightly ascending, acroscopic base auriculate, basiscopic base cuneate, apices acute and terminating in a mucronate spine, several pairs of pinnae below middle of lamina deeply pinnatifid with their proximal pair of lobes nearly free, pairs above middle serrate with a mucronate tip at tooth apex and basal acroscopic auricle deltoid; lobes obliquely oblong to obovate, entire, mucronate; frond texture papery; abaxially moderately clothed with scattered microscales, adaxially with occasional articulate hairs especially along midrib; microscales brown, linear-subulate, up to 2.5 mm, usually with few tortuous hairlike outgrowths at margin of their broader base; frond texture thinly papery; venation pinnate, obvious abaxially, lateral veins free, 1-2 times forked. Sori terminal on distal branchlets of forked veinlets, 0.5-2.5 mm apart (when young), (1-)3-5(or 6) in 1 row on each side of midrib, submarginal; indusia irregularly lacerate, membranous, glossy brown later, adjacent ones often overlapping by 0.5-1.5 mm and extending over pinna margin when mature.
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) 6-10

Usage

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Cultivation

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Distribution

Polystichum kungianum world distribution map, present in China

Identifiers

LSID urn:lsid:ipni.org:names:77107059-1
WFO ID wfo-0001039475
COL ID 4LMX7
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Polystichum kungianum