Polystichum mayebarai Tagawa

Species

Pteridophytes > Polypodiales > Dryopteridaceae > Dryopteridoideae > Polystichum

Characteristics

Plants evergreen. Rhizome erect, densely scaly; scales dark brown, narrowly lanceolate. Fronds 45-60 cm; stipe stramineous, 22-30 cm, 4-5 mm in diam. at base, lower part densely scaly; scales dark brown, narrowly ovate, upper part of stipe densely scaly; scales brown, lanceolate and narrowly lanceolate, margins ciliate. Lamina narrowly ovate or broadly lanceolate, 28-48 × 8-14 cm, rounded-cuneate, bipinnate at lower part, acuminate; rachis without proliferous bulbils, densely scaly abaxially; scales linear with dilated base, margins ciliate, lower part of rachis with lanceolate scales; scales light brown to blackish brown. Pinnae 20-26 pairs, alternate, slightly ascendant, shortly stalked, lanceolate, often falcate, middle pairs 6-10 × 1.5-2.5 cm, bases oblique, acroscopic margins nearly cuneate, basiscopic margins rounded-cuneate, pinnate, apices acuminate. Pinnules 10-14 pairs, alternate, slightly ascendant, lower pairs shortly stalked, obliquely ovate or narrowly ovate, 8-15 × 5-8 mm, basal part obliquely broadly cuneate, acroscopic bases often with small deltoid auricles, margins with small acute teeth, apices acute and mucronate; basal acroscopic pinnule largest, often ovate, sometimes pinnatilobate; abaxially scaly; microscales filiform, strongly ciliate at base; frond texture leathery; venation pinnate on pinnules, slightly concave abaxially, indistinct adaxially. Sori in 1 row on each side of pinnule midrib, 6-12 per pinnule; indusia present, entire.
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 mayebarai world distribution map, present in China, Japan, Korea (Democratic People's Republic of), and Taiwan, Province of China

Identifiers

LSID urn:lsid:ipni.org:names:17414220-1
WFO ID wfo-0001117080
COL ID 4LMZS
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Polystichum mayebarai Polystichum tsus-simense var. mayebarae