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Euphorbiaceae Juss. (トウダイグサ科)






Mount Usu / Sarobetsu post-mined peatland
From left: Crater basin in 1986 and 2006. Cottongrass / Daylily

[Engler's syllabus (エングラー体系)]

Euphorbiaceae


More than 7500 species in ca 335 genera
Major distributional areas: (sub-)tropical regions
Morphological characteristics: trimerous reproductive organs
Many species are poisonous, because of producing euphorbine
Acalypha L. (エノキグサ)
Daphniphyllum Blume (ユズリハ)
Euphorbia L. (トウダイグサ)
Mallotus Lour. (アカメガシワ)
Mercurialis L. (ヤマアイ)
≥ 10 species in the world (mostly in Europe, North Africa and Asia), one species in Japan
M. leiocarpa Siebold et Zucc. (ヤマアイ)
Ricinus L. (トウゴマ)
R. communis L. (トウゴマ)
Triadica Loour. (ナンキンハゼ)
T. cochinchinensis Lour. (ナガバナンキンハゼ)
T. sebifera (L.) Small (ナンキンハゼ)

Acalypha L. (エノキグサ) in Japan


400-450 species in the world
A. akoensis Hayata (アコウアカリファ)
A. angatensis Blanco (タイワンアカリファ)

f. velutina (Honda) Ohwi (ビロードエノキグサ)

A. australis L. (エノキグサ)
A. cardiophylla Merr. (タイトウアミガサノキ)
A. gracilens A. Gray (ヒメアミガサソウ)
A. grandibracteata Merr. (コウトウアミガサノキ)
A. hispida Burm. f. (ベニヒモノキ)
A. indica L. (キダチアミガサソウ), exotic
A. longeacuminata Hayata (ナガエアミガサノキ)
A. matudae Hayata (ホソバアミガサノキ)
A. ostryifolia Riddell ex J. M. Coult. (アレチアミガサソウ)
A. wilkesiana Müll. Arg. (アカリファ)

Euphorbiaceae, adpoted by Ohwi (or Daphniphyllaceae)

Daphniphyllum Blume (ユズリハ)


25-35 spp.
Evergreen tree-shrub
Dioecious species
Native to east and southeast Asia
D. macropodum Miq. (ユズリハ)
D. teijsmannii Zoll. ex Kurz (ヒメユズリハ)

Euphorbia L. (トウダイグサ)


Hokkaido
Three or four native species
E. ebracteolata Hayata (マルミノウルシ)
E. adenochlora Morren et Dence (ノウルシ)
E. sieboldiana Morren et Dence (ナツトウダイ)
E. tsukamotoi Honda (ヒメナツトウダイ), syn. E. sieboldiana var. montana Tatew.
Non-Hokkaido
E. jolkinii Boiss. (イワタイゲキ)
Exotics
E. cyparissias L. (マツバトウダイ)
E. marginata Pursh (ハツユキソウ)
E. sp. aff. prostrata Aiton (アレチニシキソウ) E. humifusa Willd. ex Schltdl. (= Chamaesyce humifusa (Willd. ex Schltdl.) Prokh.) (ニシキソウ)
E. maculata auct. non L. (オオニシキソウ)
E. milii Des Moul. (ハナキリン)
E. peplus L. (チャボタイゲキ)
E. supina Raf. (= Chamaesyce maculata (Raf.) Moldenke) (コニシキソウ)
E. hypericifolia L. (ユキハナソウ)
E. trigona Mill. (サイウンカク)

Mallotus Lour. (アカメガシワ)


Three species in Japan. No species in Hokkaido
M. japonicus (Thunb. ex Murray) Mueller-Arg. (アカメガシワ)
M. paniculatus (Lamarck) Muell. Arg. (ウラジロアカメガシワ): Yaeyama Islands and to south
M. philipensis (Lamarck) Muell. Arg. (クスノハガシワ)
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