Polystichum bifidum Ching

Species

Pteridophytes > Polypodiales > Dryopteridaceae > Dryopteridoideae > Polystichum

Characteristics

Plants evergreen. Rhizome erect, short, ca. 2 cm in diam. including stipe bases. Fronds 25-50 cm; stipe stramineous, sparsely scaly on lower part; scales dark brown to castaneous at middle, ovate-lanceolate, finely toothed, acuminate; cells often rectangular, cell walls straight; lateral portions of scales light brown; areoles composed of irregularly curved cells. Lamina 1-pinnate, green when dry, adaxially darker, oblong-lanceolate, 20-35 × 3-4 cm at middle, slightly contracted below middle of lamina, shortly acuminate; rachis stramineous, without proliferous bulbils, abaxially sparsely scaly; scales brown, narrowly lanceolate, toothed. Pinnae 30-40 pairs, approximate, attached at nearly right angles to rachis, oblong or nearly falcate, 1-2 cm × ca. 5 mm at middle, pinnatilobate to pinnatifid, acroscopic margins of pinnae with auriculate lobes and 4-7 short lobes, each lobe shallowly further lobed at apex into 2 unequal secondary lobules, auriculate lobes with 4 or 5 secondary small lobules, basiscopic margins of pinnae with 4 or 5 short lobes equal to or longer than those on acroscopic margins, basalmost basiscopic lobes not further lobed; all lobes ascendant, apices acute and often shortly spinulose; adaxially glabrous, abaxially sparsely scaly; microscales linear; frond texture papery; venation distinct abaxially, visible adaxially, veinlets on auricles pinnate, others nearly dichotomous, rarely simple, only 1 veinlet per lobe or secondary lobule, not reaching lobe apex. Sori small, terminal on veinlets, close to pinna margin; indusia evanescent.
Life form perennial
Growth form herb
Growth support -
Foliage retention evergreen
Sexuality -
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) -
Root system rhizome
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) -

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Polystichum bifidum world distribution map, present in China

Identifiers

LSID urn:lsid:ipni.org:names:17413570-1
WFO ID wfo-0001123440
COL ID 4LMN4
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Polystichum bifidum