Rheum rhizostachyum Schrenk

Species

Angiosperms > Caryophyllales > Polygonaceae > Rheum

Characteristics

Herbs ca. 30 cm tall, stout. Rhizome with large ocrea; roots stout. Petiole of basal leaf nearly subterete, short, 3-6 cm, 5-9 mm in diam., papilliferous; leaf blade broadly ovate or ovate, 12-25 × 10-22 cm, leathery, abaxially densely papilliferous, basal veins 5-7, purple-red, stout, base narrowly cordate or rounded, margin entire, slightly sinuolate, apex obtuse. Panicles 2-5, spiciform; rachis from apex of rhizome, 12-28 cm, 4-8 mm in diam., hollow, 1-3-branched from lower part or not, papilliferous. Pedicel ca. 3 mm, jointed below middle. Tepals yellow-white, narrowly elliptic, outer 3 smaller, 1.8-2 × 0.8-1 mm. Filaments ca. 1.5 mm; anthers broadly elliptic. Fruit ovoid or ellipsoid-ovoid, 1-1.1 cm × 7-8 mm, base subcordate, apex obtuse; wings ca. 2 mm wide, with longitudinal veins at middle. Seeds ovoid. Fl. Jun, fr. Aug-Sep.
Life form perennial
Growth form herb
Growth support -
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.3
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) 5-10

Usage

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

Cultivation

Mode -
Germination duration (days) 21 - 42
Germination temperacture (C°) 15 - 18
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Rheum rhizostachyum world distribution map, present in China, Kazakhstan, Liberia, and Tajikistan

Identifiers

LSID urn:lsid:ipni.org:names:696787-1
WFO ID wfo-0001101667
COL ID 4S6C3
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Rheum rhizostachyum Rheum aplostachyum