Euphorbia rapulum Kar. & Kir.

Species

Angiosperms > Malpighiales > Euphorbiaceae > Euphorbia

Characteristics

Herbs, 10-30 cm tall, gray-brown suffused purplish. Rootstock a globose or radish-shaped tuber, 3-5 × 2-4 cm or even larger, sometimes branching. Stems single, 3-7 mm thick, many branched apically. Leaves alternate; stipules absent; basal scale-leaves amplexicaul, slightly light purple, especially abaxially, 1-2 cm × 3-6 mm; petiole short to almost absent; upper leaf blades obovate to elliptic, 3-4.5 × 0.6-2 cm, glabrous or ciliate on margins, base tapering and sometimes cordate, margin entire, apex obtuse; lateral veins few, from lower part of main vein. Inflorescence an indistinct terminal pseudumbel plus many subterminal cymes; primary involucral leaves 2-4, similar to and slightly smaller than normal leaves; cyathophylls 2, rarely 3, ovate-oblong, 0.8-1.3 cm × 3-6(-10) mm. Cyathium sessile; involucre broadly campanulate, ca. 2.5 × (2-)3-4.5 mm, exterior glabrous, interior hairy; lobes oblong, ± obtuse, margins densely ciliate; glands 4, pale brown, rounded or reniform. Male flowers many, exserted from involucre. Female flower: ovary pedicel ca. 3 mm and exserted from cup; ovary smooth, glabrous; styles free, persistent; style arms 2-lobed. Capsule ovoid-globose, 4.5-5.5 × 4-5 mm, longitudinally furrowed, smooth, glabrous. Seeds ovoid-terete, ca. 3 × 2 mm, yellow-brown to light gray, smooth, adaxially striate; caruncle sessile. Fl. and fr. Apr-Jun.
Life form perennial
Growth form herb
Growth support -
Foliage retention deciduous
Sexuality monoecy
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.15 - 0.25
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
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 medicinal
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) 10 - 15
Germination temperacture (C°) 21 - 26
Germination luminosity -
Germination treatment soaking
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Euphorbia rapulum world distribution map, present in China, Kazakhstan, Kyrgyzstan, Turkmenistan, and Uzbekistan

Identifiers

LSID urn:lsid:ipni.org:names:348010-1
WFO ID wfo-0000964359
COL ID 3CQGQ
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Tithymalus rapulum Euphorbia rapulum