Polygonum tortuosum D.Don

Species

Angiosperms > Caryophyllales > Polygonaceae > Polygonum

Characteristics

Subshrubs. Roots robust. Stems erect, red-brown, 30-50 cm tall, glabrous or pubescent; branches forked. Petiole very short or nearly absent; leaf blade ovate or narrowly ovate, 1.5-4 × 1-2 cm, subleathery, both surfaces pubescent or glabrous, midvein prominent abaxially, impressed adaxially, base rounded or subcordate, margin entire, ciliate, slightly revolute, nearly undulate, apex acute; ocrea lax, brown, tubular, 1-2 cm, membranous, slightly oblique, densely pubescent. Inflorescence terminal, paniculate, dense; bracts membranous, pubescent. Pedicel articulate. Perianth white, campanulate, 5-parted; tepals obovate, 2.5-3 mm, unequal. Stamens 8, included; anthers purple. Styles 3, very short; stigmas capitate. Achenes included in persistent perianth, brown, ovoid, sharply trigonous, ca. 3 mm. Fl. Jul-Aug, fr. Sep-Oct.
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A small shrub. The roots are robust. It grows 30-50 cm tall. The branches are forked. The leaves are oval and 2-4 cm long by 1-2 cm wide. They can be hairy. The flowers are small and white or cream. The dry fruit is brown and oval and sharply 3 sided.
Life form -
Growth form
Growth support -
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.3 - 0.5
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Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
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Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Nitrogen fixer -
Photosynthetic pathway -

Environment

It is a temperate plant. It grows on grassy slopes. It grows between 3,600-4,900 m above sea level.
Light -
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Usage

The dried leaves are used as a tea substitute. The tender stems are eaten raw or pickled.
Uses medicinal tea
Edible leaves shoots stems
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) 21 - 60
Germination temperacture (C°) 21 - 23
Germination luminosity -
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Optimum temperature (C°) -
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Distribution

Polygonum tortuosum world distribution map, present in China

Identifiers

LSID urn:lsid:ipni.org:names:696569-1
WFO ID wfo-0001239121
COL ID 4L9SS
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Aconogonum tortuosum Polygonum tortuosum Polygonum peregrinatoris Pleuropteropyrum tortuosum Polygonum tortuosum var. tibetanum