1) Herb 2) Herbaceous plant 1) Shadflower 
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). There are over 400 species: ...
(from the article `whitlow grass`) any plant belonging to either of two genera (Erophila and Draba), of the mustard family (Brassicaceae); some authorities believe that all these ...
[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
noun 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