Panarctic Flora


361226a Ranunculus subborealis subsp. subborealis


Northern Fennoscandia: Scattered
Kanin - Pechora: Frequent
Polar Ural - Novaya Zemlya: Frequent
Yamal - Gydan: Frequent
Taimyr - Severnaya Zemlya: Scattered
Anabar - Onenyo: Rare
Kharaulakh: Rare
Northern arctic Tundra: Rare
Mid Arctic Tundra: Frequent
Southern Arcti Tundra: Frequent
Shrub Tundra: Frequent
Bordering boreal or alpine areas: Frequent

2n= 14 14-16 (2x). - Europe (N), Russia (N), Siberia (N, W), Far East (N). - Numerous reports.
For reports of tetraploids, see notes.

Geography: European (N) - Asian (N): NOR RUS SIB.

Notes: Numerous chromosome number reports for Ranunculus "borealis" (including R. subborealis) need verification. The majority of these are of tetraploids (2n = 28). One group, all cited by Löve and Löve (1975a) as R. borealis Trautv., originates from northeastern Asia where both R. borealis Trautv. and R. subborealis should be rare or absent but where the proven tetraploid R. turneri is frequent. Another group of tetraploids originates from southern Siberia and may be referable to the non-arctic R. borealis Trautv. One of the reports listed by Löve and Löve (1975a) is from this group. The Löves sorted reports according to a notion that there are two species: a diploid R. acris and a tetraploid R. "borealis". This assumption is probably not correct.

The distinction between R. subborealis and R. turneri is far from clear. The latter species generally is less pubescent, has larger flowers and larger achenes with longer beaks, but these features are not very diagnostic.

Higher Taxa