Polygonum purpureonervosum A.J.Li

Species

Angiosperms > Caryophyllales > Polygonaceae > Polygonum

Characteristics

Herbs perennial. Rhizomes black-brown, curved, large, 1.5-2 cm in diam. Stems erect, purple-red, 15-20 cm tall, simple. Basal leaves petiolate; petiole purple, 3-4 cm, glabrous; leaf blade gray-green abaxially, green and slightly shiny adaxially, elliptic, 3-5 × 2.5-3 cm, leathery, margin with thickened vein tips, revolute, veins purple-red and slightly prominent, base cuneate, apex subobtuse. Cauline leaves shortly petiolate or subsessile; leaf blades smaller than basal ones, ovate-elliptic; ocrea: lower part purple-red, upper part brown, tubular, 2.5-4 mm, membranous, apex oblique, not ciliate, dehiscent at middle. Inflorescence shortly spicate, 2-2.5 cm, 1.5-2 cm in diam.; bracts brown, ovate, membranous, apex acuminate. Pedicel 3-4 mm. Perianth purple-red, 5-parted; tepals elliptic, 3-3.5 mm. Stamens 8, exserted. Styles 3, connate to below middle, exserted; stigmas capitate. Achenes included in persistent perianth, black-brown, shiny, ovoid, trigonous, ca. 3.5 mm. Fl. Jul-Aug, fr. Aug-Sep.
Life form perennial
Growth form herb
Growth support -
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.15 - 0.2
Root system rhizome
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
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) 21 - 60
Germination temperacture (C°) 21 - 23
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Polygonum purpureonervosum world distribution map, present in China

Identifiers

LSID urn:lsid:ipni.org:names:20002262-1
WFO ID wfo-0001240177
COL ID 4L9V3
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Polygonum purpureonervosum