Cardaminopsis arenosa, (L.) Hayek

Tutin, T. G., Heywood, V. H., Burges, N. A., Moore, D. M., Valentine, D. H., Walters, S. M. & Webb, D. A., 1964, Flora Europaea - Volume 1. Lycopodiaceae to Platanaceae, Cambridge University Press : 289

1. C. arenosa (L.) Hayek , FZ. Steierm. 1: 478 (1908)

( Arabis arenosa (L.) Scop. ).

Annual to perennial, without stolons. Stems 5-80 cm, erect, robust, usually branched above and below, hairy. Basal leaves pinnatisect; cauline leaves lanceolate, pinnatifid to dentate. Flowers numerous; pedicels 3-5 mm at anthesis. Petals 6-8 mm, white (becoming pale pink after anthesis) to purplish or lilac, with a pair of small teeth on the claw. Siliqua 10-45 x 1 mm; pedicels 5-13 mm, patent. 2n= 16,28, 32. Most o f Europe except the south-west, the islands and part o f the Mediterranean region. Au Be Bu Cz D a Fe G a Ge He H o H u It Ju N o Po Rm Rs (N, B, C, W, E) Su. Often a ruderal near the limits of its area, so that its status is not always clear. Sometimes confused with Arabidopsis suecica (Fries) Norrlin , which has the basal leaves dentate to pinnatifid, petals without teeth on the claw and the siliqua not strongly dorsally compressed.

White-flowered in Fennoscandia but with petals a vivid lilac in continental Europe. This and other differences are maintained in cultivation.