Rheum nanum Siev. ex Pall.

Species

Angiosperms > Caryophyllales > Polygonaceae > Rheum

Characteristics

Herbs short, 20-35 cm tall, stout. Roots straight or bent, 2-4 cm in diam. Stem absent. Basal leaves 2-4; petiole short, 2-4.5 cm, 7-9 mm in diam., glabrous; leaf blade light green abaxially, yellow-green adaxially, reniform or orbicular, 6-14 × 8-16 cm, rarely larger, leathery, abaxially glabrous, adaxially tuberculate, basal veins 3-5, base rounded or subcordate, margin nearly entire, apex rounded. Panicle broad, from tip of rhizome, branched at middle, glabrous. Pedicel 1.5-3 mm, stout, not jointed. Flowers densely fascicled; bracteole scale-like. Tepals yellow-white, nearly fleshy, outer 3 smaller, lanceolate, 2-2.5 × ca. 1 mm; inner 3 larger, broadly elliptic to broadly ovate, ca. 3.5 × 2.5-3 mm. Stamens short. Ovary rhomboid-ellipsoid; stigma inflated. Fruit red, reniform, 1-1.2 × 1.2-1.4 cm, with longitudinal veins near margin. Seeds ovoid, ca. 5 mm wide. Fl. May-Jun, fr. Jul-Sep.
More
A herb. It keeps growing from year to year. It grows 15-25 cm high. It has a stout, straight taproot. The leaves near the base are almost round. They are 8-10 cm across. They have veins spread like fingers on a hand. The flowers are small and in groups at the top. The seeds are dry and 10-12 mm long. They have wings.
Life form perennial
Growth form herb
Growth support -
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.18 - 0.3
Root system rhizome tap-root
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 plant. It grows in north western China. It grows on gravel in the Gobi desert. It can grow in arid places. It grows between 700-2,000 m above sea level.
Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 5-10

Usage

Starch is obtained from the roots and used as a food.
Uses gene source
Edible roots
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 -

Images

Rheum nanum unspecified picture

Distribution

Rheum nanum world distribution map, present in China, Kazakhstan, Liberia, and Mongolia

Identifiers

LSID urn:lsid:ipni.org:names:696763-1
WFO ID wfo-0001101661
COL ID 4S6B9
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Rheum nanum Rheum cruentum Rheum leucorrhizum