Arugula.....Grown as an edible herb in the Mediterranean area since Roman times, it was mentioned by various classical authors as an aphrodisiac,[12][13] most famously in a poem long ascribed to Virgil, Moretum, which contains the line: "et veneris revocans eruca morantuem" ("the rocket excites the sexual desire of drowsy people").[14] Some writers assert that for this reason during the Middle Ages it was forbidden to grow rocket in monasteries.[15] It was listed, however, in a decree by Charlemagne of 802 as one of the pot herbs suitable for growing in gardens.[16] Gillian Reilly, author of the Oxford Companion to Italian Food, states that because of its reputation as a sexual stimulant, it was "prudently mixed with lettuce, which was the opposite" (i.e., calming or even soporific).
I guess that's why the dims are always fixated on Arugula.