671703 Arabis pycnocarpa var. pycnocarpa] M. Hopkins
Distribution
Western Alaska: Present only in the Borderline Arctic
Northern Alaska - Yukon: Present only in the Borderline Arctic
Central Canada: Rare
Hudson Bay - Labrador: Rare
Shrub Tundra: Rare
Bordering boreal or alpine areas: Frequent
- 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).
2n=
32 (4x). - Canada, U.S.A.? - Several reports.
Geography: North American: (ALA) CAN.
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.
Higher Taxa
- Arabis [6717,genus]