alypon
From LSJ
λύχνον μεθ᾿ ἡμέραν ἅψας περιῄει λέγων “ἄνθρωπον ζητῶ” → He lit a lamp in broad daylight and said, as he went about, “I am looking for a human”
ălȳpŏn: i, n., = ἄλυπον,
I a plant: acc. to Spreng., Globularia alypum, Linn.; herb terrible, Plin. 27, 4, 7, § 22.