Arabis hirsuta, (L.) Scop.

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 : 292

8. A. hirsuta(L.) Scop. , 77. Carn.Q&. 2,2: 30 (1772).

Short-lived perennial, rarely biennial, (4—) 10—60(— 110) cm, often with several flowering stems and branched above; lower part of the stem with mostly patent, unbranched or 2-fid hairs, sometimes glabrous, upper part usually with 2- to 5-fid hairs. Cauline leaves 10- 22(-30), subcordate, rounded or truncate at base. Petals 4- 5 - 5 mm. Siliqua 15-35 x 1 -1-9 mm; pedicels 3-8 mm, erect; valves with distinct median vein; style c. 0- 5 mm, conical, or stigma sessile. Seeds 0-9-1 - 3 mm, winged all round. 2n = 32. Wet rocks on mountains; dry calcareous slopes; calcareous dunes. Most of Europe. Al Au Be BI Br Bu Co Cz Da Fe Ga Ge Hb He Ho Hs Hu It?Ju Lu No Po Rm Rs (N, B, C, W, K, E) Sa Si Su Tu.

A polymorphic species with numerous genetically distinct variants. At least three of these may warrant recognition as subspecies:

A. brownii Jordan, Ann. Soc. Linn. Lyon ser. 2, 7: 491 (1861). 20 cm, usually glabrous except for unbranched and 2-fid hairs on the leaf-margin. Cauline leaves few. Flowers few. Siliquae in a very compact cluster, shorter and broader than in typical A. hirsuta . 2n = 32. • Dunes in W. Ireland. Hb.

A. hornungiana Schur , Enum. Pl. Transs. 43 (1866). Shorter than 8; stems always unbranched. Cauline leaves smaller, narrower, oblong (not ovate), auriculate, dentate. Petals 5-7 mm. Siliqua (25-)35-45(-60) x 1 -2-1 - 7 mm. Seeds T 3- 1 - 7 mm. • Carpathians and N. Balkan peninsula. Ju?Po Rm Rs (W).

A. sadina (Samp.) Coutinho , FI. Port. 253 (1913). Like 8 but hairs stellate and branched, appressed; siliqua erecto-patent. • C. Portugal (Estremadura).