Polystichum tangmaiense H.S.Kung & Tateishi

Species

Pteridophytes > Polypodiales > Dryopteridaceae > Dryopteridoideae > Polystichum

Characteristics

Plants evergreen. Rhizome erect or ascending, short, densely covered with linear brown scales. Fronds ca. 25 cm; stipe yellowish brown, 9-12 cm, ca. 1.8 mm in diam. at base, sparsely covered with linear brown scales. Lamina bipinnate, oblong-lanceolate, 17-24 × 6-7 cm at middle, lower part gradually contracted, base fertile, apex acuminate, sterile; rachis without proliferous bulbils, abaxially covered with linear brown scales. Pinnae 8-10 pairs, alternate, slightly ascendant, shortly stalked, lanceolate, middle pinnae 3-4 × 0.8-1.5 cm, not contracted at base, 1-pinnate, acuminate; costa adaxially sulcate, abaxially sparsely covered with linear brown scales. Pinnules 7-9 pairs, alternate, shortly stalked, oblong, 5-8 × 2.5-4 mm, bases cuneate, with deltoid auricles acroscopically, margins shallowly toothed, apices acute; basal acroscopic pinnules largest; abaxially with shortly filiform microscales, adaxially subglabrous; frond texture papery; venation pinnate, lateral veins 5-8 pairs, dichotomous, distinct. Sori 2-4 pairs per pinnule, in 1 row on each side of midrib, close to midrib, terminal on veinlets; indusia present, repand.
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) 8-12

Usage

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Edible -
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Cultivation

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Distribution

Polystichum tangmaiense world distribution map, present in China and India

Identifiers

LSID urn:lsid:ipni.org:names:17564450-1
WFO ID wfo-0001232701
COL ID 77V7L
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Polystichum tangmaiense Polystichum oligocarpum