Euphorbia jolkinii Boiss.

Species

Angiosperms > Malpighiales > Euphorbiaceae > Euphorbia

Characteristics

Herbs, perennial, 40-80[-95] cm tall. Rootstock cylindric, up to 25 cm × 6-15 mm. Stems single, sometimes branched basally, 5-9 mm thick, upper parts several branched, glabrous or very sparsely pubescent. Leaves alternate; stipules absent; petiole absent or nearly so; leaf blade ovate-oblong, ovate-elliptic, or elliptic, 1-4 × 0.3-0.7 cm, abaxially pale green, light gray when dried, especially when young, adaxially green, base attenuate, cuneate, or subtruncate, margin entire, apex obtuse or rounded; midrib prominent abaxially, lateral veins inconspicuous. Inflorescence a terminal, often compound, pseudumbel, sometimes with subterminal cymes or small pseudumbels; primary involucral leaves (3-)5-8[-10], yellow, ovate-elliptic to broadly ovate, 1-2.5 cm × 0.6-0.9 mm, margin entire, base subtruncate, apex rounded, primary rays (3-)5-7(-10), 1-3 cm; secondary involucral leaves 2 or 3; cyathophylls 2 or 3, yellow, ovate or subrounded, 6-10 × 4-8 mm, base subtruncate, apex rounded. Cyathium sessile; involucre cuplike, ca. 3 × 3.5 mm, lobes ovate-triangular, densely white pilose inside; glands 4, pale brown, reniform-rounded, entire. Male flowers many, exserted from involucre. Female flower: ovary pedicel 3-6 mm, exserted from cup; ovary densely tuberculate; styles connate below middle, persistent but easily lost; style arms slightly 2-lobed. Fruiting peduncle 4-6 mm; capsule globose, ca. 5.5 × 5.5 mm, densely long tuberculate, base compressed, apex acute. Seeds ellipsoid, ca. 3 × 2 mm, light brown, shiny; caruncle trigonous-peltate, sessile. Fl. and fr. Mar-Jul.
Life form perennial
Growth form herb
Growth support -
Foliage retention deciduous
Sexuality monoecy
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) -
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Rooting depth (meter) -
Root diameter (meter) -
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Blooming months -
Fruit color -
Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
Soil humidity -
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Hardiness (USDA) 6-11

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
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Optimum temperature (C°) -
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Vigor -
Productivity -

Images

Euphorbia jolkinii unspecified picture
Euphorbia jolkinii unspecified picture
Euphorbia jolkinii unspecified picture

Distribution

Euphorbia jolkinii world distribution map, present in China, Japan, Korea (Democratic People's Republic of), and Taiwan, Province of China

Identifiers

LSID urn:lsid:ipni.org:names:346965-1
WFO ID wfo-0000962810
COL ID 6GZ95
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Tithymalus shouanensis Galarhoeus nematocypha Galarhoeus calonesiacus Euphorbia regina Euphorbia shouanensis Euphorbia calonesiaca Euphorbia formosana Dichrophyllum jolkini Euphorbia jolkinii f. insularis Euphorbia japonica Euphorbia jolkinii Euphorbia nematocypha Galarhoeus formosanus Galarhoeus jolkinii Tithymalus calonesiacus Tithymalus formosanus Galarhoeus formosana var. hayatae Galarhoeus formosanus var. hayatae Euphorbia nematocypha var. induta Tithymalus jolkinii Galarhoeus shouanensis Galarhoeus jolkinii f. insularis