Plantago coronopus

From LSJ

οὐκ ἂν λάβοις παρὰ τοῦ μὴ ἔχοντος → you can't take from one who doesn't have, you can't squeeze blood out of a turnip, you can't get blood out of a turnip, you can't get blood from a stone, you can't get blood out of a stone

Source

Latin > Greek

Ἄμμων, ἀστέριον, ἐλάφου κέρας, κορωνόπους, κορωνοπόδιον

Wikipedia EN

Plantago coronopus

Plantago coronopus, the buck's-horn plantain, is a herbaceous annual to perennial flowering plant in the family Plantaginaceae. Other common names in the US and Italy include minutina and erba stella.