flax-leaved daphne

From LSJ

Ζευχθεὶς γάμοισιν οὐκέτ' ἔστ' ἐλεύθερος → Haud liber ultra est, nuptiae quem vinciunt → Wer durch der Ehe Joch vereint, ist nicht mehr frei

Menander, Monostichoi, 197

Wikipedia EN

Daphne gnidium (commonly known as the flax-leaved daphne) is a poisonous evergreen shrub from the Mediterranean region with narrow, dense dark-green foliage and white fragrant flowers.