Onychium tenuifrons Ching

Species

Pteridophytes > Polypodiales > Pteridaceae > Pteridoideae > Onychium

Characteristics

Rhizomes short, decumbent; scales light brown, narrowly lanceolate. Fronds slightly dimorphic (fertile fronds with narrower segments than sterile ones), closely spaced, often appearing clustered. Stipe straw-colored, sometimes slightly darkened at very base, 7-20 cm × ca. 2 mm (longer on fertile than sterile fronds). Lamina of sterile fronds ovate to narrowly ovate or elliptic-lanceolate, 3-pinnate-pinnatifid, thinly herbaceous. Lamina of fertile fronds elliptic-lanceolate, 15-25 × 5-10 cm, 3-or 4-pinnate, apex acuminate, firmly papery when dry, green, not farinose; lateral pinnae 8-10 pairs; longest pinnae lanceolate, stalks 4-10 mm. Ultimate pinnules (segments) of sterile lamina crowded but mostly not overlapping, obovate or oblong, with sharp teeth at apex, 1 veinlet per tooth, margins often slightly thickened or somewhat cartilaginous. Ultimate pinnules (segments) of fertile lamina not overlapping, oblong-linear or lanceolate, 1-6 × 0.4-0.9 mm, sessile or decurrent on costule, apex acuminate or acute. Sori 3-5 mm, glabrous. False indusia linear to narrowly oblong, not approaching midvein, with erose margins. 2n = 87.
Life form perennial
Growth form herb
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Sexuality hermaphrodite
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Root system rhizome
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Environment

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Hardiness (USDA) 6-11

Usage

Uses medicinal
Edible -
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Animal toxicity -

Cultivation

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Distribution

Onychium tenuifrons world distribution map, present in Bhutan, China, and India

Identifiers

LSID urn:lsid:ipni.org:names:17408830-1
WFO ID wfo-0001117779
COL ID 6SM7L
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Onychium tenuifrons Onychium japonicum var. delavayi