Photos: Patrick Slavin, the Burren
Small white flowers, 4-petalled. Erect fruit, close-pressed to stem.
Basal rosette of oval-oblong, more/less un-toothed leaves. Stem leaves are
smaller, lanceolate, clasping stem. More/less hairy plant. Height: 10-50cm.
Dry, sunny, base-rich ground. Rocky ledges, short grassland, dunes, walls.
Mainly found in W, NW Ireland.