The Collaborative International Dictionary
Peristerion
Peristerion \Per`is*te"ri*on\, n. [NL., fr. Gr. ? a dovecote, a kind of verbena, fr. ? a dove, pigeon; cf. L. peristereon.] (Bot.) The herb vervain ( Verbena officinalis).
Wiktionary
peristerion
n. (context botany English) The herb vervain ((taxlink Verbena officinalis species)).