Species in the genus Euphobia:

Euphorbia jolkinii / Iwataigeki
Euphorbia maculata / Oonishikisou
Euphorbia pekinensis / Takatoudai
Euphorbia sieboldiana / Natsutoudai
Euphorbia supina / Konishikisou

　

Euphorbia supina / Konishikisou コニシキソウ

Euphorbia supina is an annual native of North America, ordinarily seen on roadsides or fields in various districts. Stems grow 10-20cm long, creeping on the ground and spreading. Leaves are of opposite phyllotaxis, 0.7-1cm long, long oblong, and prominent dark purple taches on the surfaces. Leaf pairs are significantly uneven at the bases of the plants. Cyathium inflorescences appear at the leaf axils on the upper parts. Bloom time: June-September.