5a. Arabidopsis halleri subsp. halleri. Arabis halleri Linnaeus, Sp. Pl. ed. 2, 2: 929. 1763; Cardamine halleri (Linnaeus) Prantl, Exkurs. Fl. Bayern, ed. 2, 229. 1884; Cardaminopsis halleri (Linnaeus) Hayek, Fl. Steiermark 1: 479. 1908. Lectotype designated by Al-Shehbaz in Cafferty and Jarvis (2002): “Sisymbrium [palustre album] foliis imis Barbareae reliquis” in Haller (Opusc. Bot.: [t. I, f. 1], 1749. Epitype: Herb. Linn. No. 842.11 (LINN!).
Arabis besseri Zapalowicz subsp. proseocarpatica Zapalowicz, Rozpr. Wydz. Mat.-Przyr. Acad. Umiejetn., Dzial B, Nauki Biol. 52: 31. 1912. TYPE: “in rupibus calcareis Carpatorum orientalium locis siccioribus: Budyowska Wielka, 1555 m,” Zapalowicz s.n. (lectotype, KRAM).
Arabis halleri var. carstica Dostál, Čas. Nar. Mus., Odd. Přir. 60: 61, 1936. TYPE: “ad declivia aprica graminosa in regione Slovensky Kras dicta et in convallibus rivi Hornad inter oppida Obyšovce et Košice,” ca. 450 m, 16 May 1933, Dostál s.n. (lectotype designated by Kolník & Marhold (2006: 45): PR).
Arabis halleri var. devestita Zapalowicz, Rozpr. Wydz. Mat.-Przyr. Akad. Umiejetn., Dzial B, Nauki Biol. 52, Ser. B.: 45, 1912. TYPE: “Na zachod od Babiej gory. . . w Tatrach. . . w krainie kosodrzewu Czarnej Hory.” 28 Apr 1906, Zapalowicz 221.39 (lectotype designated by Kolník & Marhold (2006: 45): KRAM 114338).
Arabis halleri Linnaeus var. pilifera Beck, Fl. Nieder-Österreich 2: 458. 1892; Cardaminopsis halleri var. pilifera (Beck) E. Schmid in Hegi, Ill. Fl. Mitel-Eur., ed. 1, 424. 1919. TYPE: Austria, Beck s.n. (holotype, PRC or W).
Arabis halleri var. prelukiensis Zapalowicz, Rozpr. Wydz. Mat.-Przyr. Akad. Umiejetn., Dzial B, Nauki Biol. 52, Ser. B.: 45, 1912. TYPE: “Miedzi obu Czeremoszami blizko ich Zrodlowisk: Preluki na skalach wapiennych kolo 1550 m,” 1886, Woloszczak 70.276 (Lectotype designated by Kolník & Marhold (2006: 44): KRAM 114348).
Arabis halleri var. sudetica Dostál, Čas. Nar. Mus., Odd. Přir. 60: 61, 1936. TYPE: “Montes Krkonoše.” (holotype not known).
Arabis halleri var. tatrica Pawlowski. Acta Soc. Bot. Poloniae 7: 129. 1930–1931; Arabidopsis halleri subsp. tatarica (Pawlowski) Kolník & Marhold, Biologia Bratislava 61: 45. 2006. TYPE: “. . . w postaci zupelnie typowej na calej przestrzeni od Krzesanicy po Kope Kondracka w wysokosci od 1950 po 2128 m,” 26 Jul 1928, Pawlowski s.n. (lectotype designated by Kolník & Marhold (2006: 45): KRAM 320705).
Arabis halleri var. trachytica Fritsch, Verh. Zool.-Bot. Ges. Wien 44: 311, 1895. TYPE: “Bosnia orientalis. In pratis montis Kvarac prope Srebrenica, solo trachytico et calcareo (?), 400–500 m, Julio mense (Wettstein). Styria inferior. In silvis prope Cilli, solo calcareo(?), ca. 600 m, 3 Jul (Rechinger, R.).” TYPE: not known.
Arabis halleri subsp. transsilvanica Klášterský, Preslia 8: 29. 1929, non Schur 1866, nom. illeg. Svidovec, travnaty svah od vrcholu Bližnice do kotle, 1800 m, 5 Jul 1926, Klášterský 1601 (lectotype designated by Kolník & Marhold (2006: 44): PR).
Arabis halleri var. valida Zapalowicz, Rozpr. Wydz. Mat.-Przyr. Akad. Umiejetn., Dzial B, Nauki Biol. 52, Ser. B.: 46. 1912. TYPE: “Rospuntowa ko_lo Chrzanowa” 24 Jul 1876, Krupa 27.590 (holotype, KRAM 114327).
Arabis tenella Host, Fl. Austriac. 2: 273. 1831. TYPE: “in Styria superiore in humidis alpinum judenburgensium” (lectotype designated by Kolník & Marhold (2006: 43), W).
Cardamine stolonifera Scopoli, Fl. Carniol., ed. 2: 229. 1772; Arabis stolonifera (Scopoli) Horneman, Hort. Bot. Hafn. 2: 618, 1815. TYPE: “Habitat in Distictu Vipaccensi” (lectotype designated by Kolník & Marhold (2006: 43): Scopoli, Fl. Carnil. Ed. 2, tab. 39. fig. 818. 1772).
Plants with few stolons. Stems 20–45 cm, branched below and above. Basal leaves pinnatifid, with 1–7 lateral lobes on each side; lower stem leaves often oblong, dentate. Fruiting pedicels 5–10 mm. Petals white or rarely lavender. 2n = 16.
Habitats: slopes, forest margins, rocky crevices.
Elevation: 600–2200 m.
Distribution: Austria, Belgium, Bosnia and Herzegovenia, Croatia, Czech Republic, N France, Germany, N and C Italy, Moldova, Poland, Romania, Serbia, Slovakia, Slovenia, Switzerland, and S Ukraine.