Athyrium minimum Ching

Species

Pteridophytes > Polypodiales > Aspleniaceae > Athyrium

Characteristics

Rhizomes short, small, erect, with sparse brownish, lanceolate scales at apex and stipe bases. Fronds caespitose; fertile fronds ca. 10 cm; stipe stramineous, 2-3 cm, ca. 0.5 mm in diam.; lamina pinnate, lanceolate, 4-6 × 1-1.5 cm, base hardly narrowed, apex acuminate; pinnae stalked (stalk ca. 1 mm), pinnatifid, spreading or ascending; basal pinnae slightly shortened, subovate or ovate-triangular, reflexed; middle pinnae unequally ovate or rhomboid, 8-10 × 3.5-4 mm, base inequilateral, auriculate at acroscopic side (auricle free, broadly ovate or oblong, with triangular teeth at margin), broadly cuneate at basiscopic base, pinnatipartite nearly to costae, apex obtuse; pinna segments small, 2 pairs, obovate or oblong, apex with 1 or 2 sharp teeth. Veins visible abaxially, pinnate in segments, lateral veins forked, with 1 veinlet per tooth. Lamina papery when dried, glabrate, dark brown adaxially, pale brown abaxially; rachis and costae stramineous abaxially, occasionally with 1 or 2 brownish, linear small scales. Sori J-shaped or horseshoe-shaped, 1 per segment, but sometimes 2 on auriculate lobes; indusia brownish, J-shaped or horseshoe-shaped, membranous, erose at margin, persistent. Perispore surface without folds.
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Growth form herb
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Root system rhizome
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Hardiness (USDA) 7-11

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Cultivation

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Distribution

Athyrium minimum world distribution map, present in China, Japan, and Taiwan, Province of China

Identifiers

LSID urn:lsid:ipni.org:names:17526340-1
WFO ID wfo-0001232786
COL ID 5W8JB
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Athyrium minimum