| Arabis pycnocarpa M. Hopkins | |
| Publ. & Syn. | M. Hopkins, Rhodora 39: 112 (1937). Holotype (GH): Canada: Quebec, Gaspé Peninsula, Bonaventure Co., St. Jean l'Evangéliste, Nouvelle, 19.-20. July 1904, leg. Collins and Fernald. - Arabis hirsuta var. pycnocarpa (M. Hopkins) Rollins, Rhodora 43: 318 (1941). - Arabis hirsuta subsp. pycnocarpa (M. Hopkins) Hultén, Acta Univ. Lund., n. s., sect. 2, 41, 1: 873 (1945). |
| Notes | Rollins (1993) and Cody (1996) treated Arabis pycnocarpa as a variety of A. hirsuta. It seems to be a major North American race (var./subsp. pycnocarpa) or species (A. pycnocarpa), vicariant to the Eurasian A. hirsuta, see Al-Shehbaz (2010a) for a discussion. The name A. borealis, sometimes applied for the North American plants, belongs to a Eurasian species, see Excluded taxa. |
| Chromosomes | 32 (4x). - Canada, U.S.A.? - Several reports. |
| Geography | North American: (ALA) CAN. |
| Distribution | N = F AN = b E = R CC = r HL = r AW = b [ key ] |
| Parent taxon | Arabis L. |
| PAF ID | 671703 |