The common garden plant Achillea, also known as yarrow, was named after Achilles from this passage in the Iliad. It is supposed to be the plant which supplied the root with which Patroclus healed Eurypylos. It also has the names allheal and bloodwort for the same reason. It has to be said that this is pure speculation and there is no firm evidence that this was the actual plant.
ἦ, καὶ ὑπὸ στέρνοιο λαβὼν ἄγε ποιμένα λαῶν
ἐς κλισίην: θεράπων δὲ ἰδὼν ὑπέχευε βοείας.
ἔνθά μιν ἐκτανύσας ἐκ μηροῦ τάμνε μαχαίρῃ
ὀξὺ βέλος περιπευκές, ἀπ᾽ αὐτοῦ δ᾽ αἷμα κελαινὸν
νίζ᾽ ὕδατι λιαρῷ, ἐπὶ δὲ ῥίζαν βάλε πικρὴν
χερσὶ διατρίψας ὀδυνήφατον, ἥ οἱ ἁπάσας
ἔσχ᾽ ὀδύνας: τὸ μὲν ἕλκος ἐτέρσετο, παύσατο δ᾽ αἷμα.
He spoke and holding him under the chest he led the shepherd of the people into the hut. An attendant saw him and put down ox hides where Patroclus laid out Eurypylos and cut the sharp piercing missile from his thigh with his knife and washed the dark blood from it with warm water; and he applied on it a bitter root, having rubbed it with his hands, a pain-killer. It stopped all the pains and the wound dried and the blood ceased.