Rucola vs. Arugula: What's the Difference?

Rocket, arugula (plant Eruca sativa)

A Mediterranean plant (Eruca vesicaria subsp. sativa) of the mustard family, having flowers with purple-veined, yellowish-white petals and pungent, edible leaves. Also called rocket2, roquette.

One of three yellowish-flowered Mediterranean herbs of the mustard family with flavoured leaves, often eaten in salads. Has a distinct, peppery flavor:

Eruca sativa, sometimes Eruca vesicaria subsp. sativa

Eruca vesicaria

Diplotaxis tenuifolia

An erect European annual (Eruca vesicaria sativa) of the mustard family, often grown as a salad crop to be harvested when young and tender.

Erect European annual often grown as a salad crop to be harvested when young and tender