Polygonum thunbergii Siebold & Zucc.

Species

Angiosperms > Caryophyllales > Polygonaceae > Polygonum

Characteristics

Herbs annual. Stems erect or ascending, 30-90 cm tall, angulate, with recurved prickles, rooting at nodes in lower part. Petiole 2-5 cm, retrorsely prickly; leaf blade hastate, both surfaces sparsely bristly, rarely stellate hairy, base subcordate or truncate, margin shortly ciliate, middle lobe ovate to broadly ovate, apex acuminate, basal lobes smaller, apex acute or obtuse; ocrea tubular, short, membranous, usually apex with green herbaceous wing, margin entire or crenate, shortly ciliate. Inflorescence capitate; peduncle branched, pubescent below, glandular hairy in upper part; bracts lanceolate, margin ciliate, each 3-or 4-flowered. Pedicels shorter than bracts, glabrous. Perianth pinkish or white, 5-parted; tepals elliptic, 3-4 mm, apex obtuse. Stamens 8, in 2 whorls, included. Styles 3, connate to below middle; stigmas capitate. Achenes included in persistent perianth, yellow-brown, opaque, broadly ovoid, trigonous, 3-3.5 mm. Fl. Jul-Sep, fr. Aug-Oct. 2n = 40*.
More
A herb. It grows 50-70 cm tall. The leaves are 5-7 cm long. They are triangle shaped. They are prickly underneath. The flowers have hairs.
Life form annual
Growth form herb
Growth support -
Foliage retention deciduous
Sexuality hermaphrodite
Pollination entomogamy
Spread -
Mature width (meter) -
Mature height (meter) 0.7 - 0.9
Root system -
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

It is a temperate to subtropical plant. It grows in wetlands. In Vietnam it grows at 1,500 m above sea level.
Light 4-9
Soil humidity 6-9
Soil texture 1-6
Soil acidity 3-7
Soil nutriment -
Hardiness (USDA) 5-11

Usage

Uses fodder medicinal
Edible leaves seeds shoots
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Can be grown by seedlings.
Mode seedlings
Germination duration (days) 21 - 60
Germination temperacture (C°) 21 - 23
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Polygonum thunbergii unspecified picture

Distribution

Polygonum thunbergii world distribution map, present in China, Georgia, India, Japan, Nepal, Korea (Democratic People's Republic of), Thailand, Taiwan, Province of China, and Viet Nam

Identifiers

LSID urn:lsid:ipni.org:names:696555-1
WFO ID wfo-0001100848
COL ID 6W69D
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Persicaria hastato-triloba Polygonum hastatotrilobum Truellum thunbergii Polygonum stoloniferum Polygonum stellatotomentosum Tracaulon thunbergii Persicaria thunbergii Persicaria sinica Polygonum sinicum Polygonum arifolium Helxine arifolia Polygonum pteropus Polygonum thunbergii Persicaria thunbergii var. stolonifera Polygonum thunbergii var. stoloniferum