What is "draba"

n. any of numerous low-growing cushion-forming plants of the genus Draba having rosette-forming leaves and terminal racemes of small flowers with scapose or leafy stems; fruit is a dehiscent oblong or linear silique

Draba is a large genus of flowering plants in the cabbage family Brassicaceae (Cruciferae), commonly known as whitlow-grasses (though they are not related to the true grasses).