Polygonum cognatum Meisn.

Renouée connue (fr)

Species

Angiosperms > Caryophyllales > Polygonaceae > Polygonum

Characteristics

Herbs perennial. Root ligneous, stout, ca. 1.5 cm in diam. Stems prostrate, 8-15 cm, branched from base, angulate, minutely papillate along angles. Petiole 2-5 mm, base articulate; leaf blade elliptic, 1-2 cm × 5-13 mm, both surfaces glabrous, abaxially with prominent midvein, adaxially with conspicuous midvein; ocrea silvery, thinly membranous, hyaline, veined, apex lacerate. Flowers 1-5, in axillary fascicles; bracts ca. as long as lower leaves, membranous, apex acuminate. Pedicel 1-3 mm. Perianth green, margin pinkish or white, 5-cleft to 1/2; tepals ovate, 1.5-2 mm, becoming hard in fruit. Stamens 8, included; filaments dilated at base. Styles 3; stigmas capitate. Achenes included in persistent perianth, black, shiny, ovoid, trigonous, 2.5-3 mm. Fl. Jun-Aug, fr. Jul-Sep.
More
A herb. It keeps growing from year to year. It has a slender woody rootstock. The leaves have short stems and are oval with sharp tips. The flowers are pink. They are in clumps and 4-5 mm long.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) -
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

It is a Mediterranean plant.
Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) -

Usage

The leaves and stems are cooked and eaten as a vegetable. They are chopped and fried with egg. They are also made into soup. They are also eaten in salads. They are also cooked with yoghurt.
Uses medicinal
Edible leaves stems
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 cognatum world distribution map, present in China and Pakistan

Identifiers

LSID urn:lsid:ipni.org:names:695571-1
WFO ID wfo-0000489719
COL ID 4L98K
BDTFX ID 51430
INPN ID 114689
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Polygonum alpestre Polygonum cognatum Polygonum rupestre Polygonum ammanioides Polygonum myriophyllum Polygonum cognatum subsp. cognatum Polygonum cognatum var. alpestre

Lower taxons

Polygonum cognatum subsp. chitralicum