Thlaspi

Thlaspi is a genus in the family Brassicaceae, native to temperate regions of Eurasia. They are low growing rock garden plants with white or lilac flowers.

Thlaspi rotundifolium
Thlaspi rotundifolium

Round-Leaved Penny-Cress

Round-leaved penny-cress is a spring flowering rock garden plant with lilac flowers.