2b. Arabidopsis arenosa (Linnaeus) Lawalrée subsp. borbasii (Zapalowicz O’Kane & Al-Shehbaz, Novon 7: 325. 1997; Arabis arenosa (Linnaeus) Scopli subsp. borbasii Zapalowicz, Rozpr. Wydz. Mat.-Przyr. Acad. Umiejetn., Dzial B, Nauki Biol. 52: 31. 1912; Cardaminopsis arenosa (Linnaeus) Hayek subsp. borbasii (Zapalowicz) Pawlowski ex H. Scholz, Willdenowia 3: 139. 1962; C. arenosa var. borbasii (Zapalowicz) E.I. Nyárády in Savulescu, Fl. Reipubl. Popularis Roman. 3: 288. 1955; C. borbasii (Zapalowicz) H. Hess, Landolt & Hirzel, Fl. Schweiz, Fl. Schweiz. 3: 778. 1972. TYPE: Poland. Carpathians, Babia Góra monte, 1285–1725 m, Zapalowicz s. n. (lectotype, designated by O’Kane & Al-Shehbaz (1997), KRAM).
Arabis arenosa var. dependens Borbás, Math. Term. Közl. 15: 156. 1878; Cardaminopsis arenosa var. dependens (Borbás) Jávorka, Magyar Fl. 436. 1924; C. arenosa subsp. borbasii var. dependens (Borbás) Soó, Acta Bot. Acad. Sci. Hungar. 13: 304. 1967; C. dependens (Borbás) Kotov, comb. invalid. TYPE:
Arabis arenosa var. multiceps Neilreich, Fl. N. Öster. 715. 1859; Arabis multiceps (Neilreich) Favarger & Rch., Abh. Zool. Bot. Ges. Wien 3: 31. 1905, not A. multiceps Greene, Leaflets Bot. Obs. 2: 76. 1910. TYPE: “Flussgebienten der Peisting, Schwarza, Traisen” (syntypes, W).
Arabis arenosa var. runcinata Godron, Fl. de Lorraine, ed. 2, 1: 60. 1857; Arabidopsis arenosa var. runcinata(Godron) Lawalrée, Bull. Soc. Roy. Bot. Belgique 92: 242. 1960. TYPE: “Nancy, aux Fonds Saint Barthelémy et à Liverdun (Soyer-Willemet); Pont-à-Mousson (Léré); Rosières-aux Salines; Lunéville” (syntypes, NCY).
Arabis arenosa var. sarmentosa Schur, Enum. Pl. Transsilv. 44. 1866. Type: “Auf dem Königstein bei Kronstadt, kalk., Aug, 6000′” (holotype, not located).
Arabis hispida Mygind var. intermedia Freyn, Österr. Bot. Z. 39: 133. 1889; A. freynii Brügger, Österr. Bot. Z. 39: 231. 1889. TYPE: Salzburg, J. Freyn s.n. (holotype, BRNM?).
Arabis multijuga Borbás, Linnaea, 41: 604. 1877; Arabisarenosa subsp. multijuga (Borbás) Kulczynski in Szafer, Fl. Polska 3: 162. 1927; A. arenosa var. multijuga (Borbás) Zapalowicz, Rozpr. Wydz. Mat.-Przyr. Acad. Umiejetn., Dzial B, Nauki Biol. 52: 35. 1912; Cardaminopsis multijuga (Borbás) Czerepanov, Plantae Vasculares URSS 127. 1981; C. arenosa var. multijuga (Borbás) Kotov in Klukov & E. D. Wissjulina, Fl. RSS Ucr. 5: 290. 1953. TYPE: Gutin, Borbás s.n. (holotype, BP or BPU).
Arabis petraea (Linnaeus) Lamarck var. intermedia Neilreich, Nachtr. Fl. Wien. 262. 1851; Cardaminopsisarenosa var. intermedia (Neilreich) Hayek, Fl. Steiermark 1: 479. 1908. TYPE: “Gemein auf Felsen der kalkgebirge und in Sand subalpiner Bäche in der höhern Berg-un Voralpen region besonders im Flossgebiete des kaltenganges und der Schwarza steight night über 3000′” (syntypes, W).
Plants usually perennial. Basal leaves pinnatisect, with 4-11 lateral lobes on each side; terminal lobe about as large as adjacent lateral lobes. Petals bright lilac. Ovules 28–38 per locule. Seeds broadly winged at least distally. 2n=16, 32.
Habitats: forest margins, slopes, stream banks, trails.
Elevation: 400–2100 m.
Distribution: E Belgium, Czech Republic, NE France, Germany, Hungary, Poland, Romania, Slovakia, Switzerland, Ukraine. Doubtfully occurring in Denmark.