ὀνόπυξος
From LSJ
Τὸ γὰρ περισσὰ πράσσειν οὐκ ἔχει νοῦν οὐδένα → There is no sense in doing things beyond the usual measure
English (LSJ)
ὁ,
A cotton-thistle, Onopordon illyricum, Thphr.HP6.4.3, Plin.HN21.94.
Greek (Liddell-Scott)
ὀνόπυξος: ὁ, φυτόν τι ἀκανθῶδες, Θεοφρ. π. Φυτ. Ἱστ. 6. 4, 3.