864626 The Hieracium laevigatum aggregate
Distribution
Northern Fennoscandia: Rare
Kanin - Pechora: Rare
Yamal - Gydan: Rare
Taimyr - Severnaya Zemlya: Rare
Hudson Bay - Labrador: Rare
Western Greenland: Scattered
Eastern Greenland: Rare
Southern Arcti Tundra: Rare
Shrub Tundra: Scattered
Bordering boreal or alpine areas: Frequent
2n=
(1) 18 (2x). - Europe (Finland). - Jalas and Pellinen (1985).
(2) 27 (3x). - Europe, Russia, Siberia, Canada, U.S.A., Greenland. - Several reports, the Greenland one for H. acranthophorum, those from Canada and U.S.A. for H. scabriusculum or H. canadense.
Geography: Amphi-Atlantic - European - Asian (W): NOR RUS SIB CAN GRL.
Notes: Böcher et al. (1978) indicated that the Greenland microspecies assigned here could belong to two groups - the Hieracium inuloides group (in sect. Foliosa) and the H. laevigatum group (= sect. Tridentata) - but they did not divide species on these groups.
According to Scoggan (1979), a species named H. canadense Michx., Fl. Bor.-Amer. 2: 86 (1803), reaches the Arctic on southeastern Hudson Bay in Quebec. Strother (2006b) included both H. canadense and H. scabriusculum in his widely circumscribed H. umbellatum, probably corresponding to sect. Tridentata. The name H. canadense might have priority for the Canadian species.
The H. laevigatum aggregate is a very large group where there probably are many more microspecies in the Arctic in Norway than those listed below.
- Hieracium acranthophorum Omang - GRL.
- Hieracium brotheri Norrl. - RUS.
- Hieracium cruentiferum (Norrl. & H. Lindb. ex Norrl.) Johanss. - RUS.
- Hieracium devoldii Omang - GRL.
- Hieracium dolabratum (Norrl.) Norrl. - NOR? RUS SIB.
- Hieracium eugenii Omang - GRL.
- Hieracium lapponicum Fr. - (NOR) RUS.
- Hieracium musartutense Omang - GRL.
- Hieracium nepiocratum Omang - GRL.
- Hieracium puschlachtae (Pohle & Zahn) Juxip - RUS.
- Hieracium putoranicum Tupitzina - SIB.
- Hieracium rigorosum Almq. ex Omang - GRL.
- Hieracium scabriusculum Schwein. - CAN.
- Hieracium stiptocaule Omang - GRL.
- Hieracium subasperellum Pohle & Zahn ex Zahn - RUS.
- Hieracium subrigidum Almq. ex Stenstr. - RUS.
- Hieracium timanense Schljakov - RUS.
Higher Taxa
- Hieracium [8646,genus]