Euphorbia helioscopia
From LSJ
Ἡ φύσις ἑκάστῳ τοῦ γένους ἐστὶν πατρίς → Natura generi cuique tamquam patria est → Die Heimat seiner Art ist jedem die Natur
Wikipedia EN
Euphorbia helioscopia, the sun spurge or madwoman's milk, is a species of flowering plant in the spurge family Euphorbiaceae. It is a herbaceous annual plant, native to most of Europe, northern Africa, and eastward through most of Asia. Additional folk names include wart spurge, summer spurge, umbrella milkweed, and wolf's-milk.