Dryopteris ryo-itoana Sa.Kurata

Species

Pteridophytes > Polypodiales > Dryopteridaceae > Dryopteridoideae > Dryopteris

Characteristics

Rhizome ascending. Fronds caespitose. Stipes dark or castaneous, ca. 30 cm, with lanceolate, dark brown, entire scales at base; upper part of stipe with sparse, smaller, light brown scales. Lamina deltoid-ovate, widest at base, 30-40 × 20-30 cm, bipinnate. Pinnae 10-12 pairs, subopposite; basal pair largest, 15-20 × 7-10 cm. Pinnules 7-10 pairs, lanceolate, pinnatifid or pinnatipartite; basiscopic pinnules on basal pinnae longer and larger than rest, 5-6 × 1.5-2 cm, proximally oblique, Segments obtuse with few acute teeth. Rachis and base of pinna rachises covered with lanceolate, light brown scales, abaxial surface of pinna rachis with sparse, light brown bullate scales. Costa grooved adaxially. Veins pinnate; veinlets simple or forked, obscure abaxially. Lamina herbaceous, yellowish green, glabrous adaxially, sparsely scaly abaxially. Sori in 1 row on either side of costa, slightly near a costa, indusiate; indusia reniform, entire. n = 123.
Life form perennial
Growth form herb
Growth support -
Foliage retention evergreen
Sexuality -
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Root system rhizome
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Nitrogen fixer -
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Environment

Light -
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Hardiness (USDA) 6-11

Usage

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Edible -
Therapeutic use -
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Cultivation

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Distribution

Dryopteris ryo-itoana world distribution map, present in China, Japan, and Taiwan, Province of China

Identifiers

LSID urn:lsid:ipni.org:names:17437010-1
WFO ID wfo-0001117006
COL ID 37XLC
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Dryopteris ryo-itoana Dryopteris pseudofuscipes Dryopteris lushanensis Dryopteris kaihuaensis Dryopteris triangularifrons