Species of flowering plant
Euphorbia sieboldiana
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Scientific classification
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Kingdom:
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Plantae
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Clade:
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Tracheophytes
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Clade:
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Angiosperms
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Clade:
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Eudicots
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Clade:
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Rosids
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Order:
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Malpighiales
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Family:
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Euphorbiaceae
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Genus:
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Euphorbia
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Species:
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E. sieboldiana
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Binomial name
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Euphorbia sieboldiana
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Synonyms[1]
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Galarhoeus sieboldianus (C.Morren & Decne.) H.Hara
Tithymalus sieboldianus (C.Morren & Decne.) H.Hara
Euphorbia bodinieri H.Lév. & Vaniot
Euphorbia erythraea Hemsl.
Euphorbia esquirolii H.Lév. & Vaniot
Euphorbia glaucopoda Diels
Euphorbia guilielmi A.Gray
Euphorbia henryi Hemsl.
Euphorbia hippocrepica Hemsl.
Euphorbia idzuensis Nakai ex Hurus.
Euphorbia kangdingensis W.T.Wang
Euphorbia kangdingensis var. puberula W.T.Wang
Euphorbia luticola Hand.-Mazz.
Euphorbia savaryi Kiss
Euphorbia sieboldiana var. grandifolia (Franch. & Sav. ex Hurus.) Oudejans
Euphorbia sieboldiana f. idzuensis Hurus.
Euphorbia sieboldiana var. idzuensis (Hurus.) Oudejans
Euphorbia sieboldiana var. montana Tatew.
Euphorbia sieboldiana var. ohsumiensis (Hurus.) Hatus.
Euphorbia sieboldiana f. peninsularis Hurus.
Euphorbia sieboldiana var. peninsularis (Hurus.) Kitag.
Euphorbia sieboldiana f. sylvatica Hurus.
Euphorbia sieboldiana var. sylvatica (Hurus.) Oudejans
Euphorbia sieboldiana f. yezoensis Hurus.
Euphorbia szechuanica Pax & K.Hoffm.
Euphorbia taquetii H.Lév. & Vaniot
Euphorbia tsukamotoi Honda
Galarhoeus hippocrepicus (Hemsl.) Hurus.
Galarhoeus luticola (Hand.-Mazz.) Hurus.
Galarhoeus sieboldianus f. grandifolius Franch. & Sav. ex Hurus.
Galarhoeus sieboldianus var. idzuensis Hurus.
Galarhoeus sieboldianus var. miyajimensis Hurus.
Galarhoeus sieboldianus var. montanus (Tatew.) H.Hara
Galarhoeus sieboldianus var. ohsumiensis Hurus.
Galarhoeus sieboldianus f. peninsularis (Hurus.) Hurus.
Galarhoeus sieboldianus var. shikokianus Hurus.
Tithymalus erythraeus (Hemsl.) Soják
Tithymalus henryi (Hemsl.) Soják
Tithymalus hippocrepicus (Hemsl.) Soják
Tithymalus szechuanicus (Pax & K.Hoffm.) Soják
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Euphorbia sieboldiana, the Siebold's spurge,[3] is a species of flowering plant in the spurge family Euphorbiaceae. It is native to eastern Asia, where it is found in China, Japan, Korea, and eastern Russia.[4] Its natural habitat is in grassy areas and forest margins.[4] It is a common species in Japan.[5]
It is an rhizomatous perennial growing to 70 cm tall. It produces small flowers in compact pseudoumbels. These lack petal-like appendages. This species can be readily identified by the horn-like projections on the glands of the involucre.[4] Blooming time is in spring and early summer.[5]
Toxicity and medicinal uses
The plant is used medicinally in China, where it has the common name Langdu (狼毒花) lit. "wolf poison" (狼 lang "wolf" + 毒 dú "poison" + 花 huā "flower"). It shares this vernacular name with two other medicinal plants: Euphorbia fischeriana and the unrelated Stellera chamaejasme (family Thymelaceae) - which nonetheless has similar qualities, medicinal properties and uses, these being pungency, toxicity, cathartic, anthelmintic and expectorant activity, and topical use to treat ulcers and skin diseases.[6][7]