Irish wildflowers BSBI map

Hairy Rockcress, Arabis hirsuta, Gas caillí giobach
The Burren, Co. Clare. © Patrick Slavin

Hairy Rockcress
Arabis hirsuta
Gas caillí giobach
Family: Brassicaceae

Flowering: May-August. Biennial or perennial. Native.

Terminal clusters of small white flowers with 4-petals are followed by erect fruit, close-pressed to stem. The basal rosettes have oval-oblong, more/less un-toothed leaves, stem leaves are smaller, lanceolate and clasp the stem. A more/less hairy plant. Height 10-50cm.

Widespread but decreasing on dry, sunny limestone ledges, walls and in short base-rich grassland. Now mainly found in the west and north-west of Ireland.

Hairy Rockcress, Arabis hirsuta, Gas caillí giobach
Hairy Rockcress, Arabis hirsuta, Gas caillí giobach

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