630622 Oxytropis koyukukensis A.E. Porsild
Distribution
Western Alaska: Present only in the Borderline Arctic
Northern Alaska - Yukon: Rare
Shrub Tundra: Rare
Bordering boreal or alpine areas: Rare
- A.E. Porsild, Canad. Field-Naturalist 65: 78 (1951). Holotype (CAN): Alaska: near Wiseman the southern Brooks Range, 15. July 1949, leg. L.H. Jordal 1763. - Oxytropis arctica var. koyukukensis (A.E. Porsild) S.L. Welsh, Iowa State Coll. J. Sci. 41: 280 (1967).
2n=
48 (6x). - Alaska. - Holmen (1962); Dawe and Murray (1981b).
Geography: American Beringian: ALA.
Notes: Yurtsev: Oxytropis koyukukensis is a more or less robust, erect plant with densely branched caudex and compact racemens. It does not seem to be closely related to O. arctica and it obviously belongs to another morphotype.
Elven and Murray: In the investigations of Jorgensen et al. (2003), the material identified as O. koyukukensis (from northeastern Alaska) was polymorphic in molecular markers but all its parts grouped with branches of O. arctica (either red/blue or white-flowered). We find it as close to Alaskan O. arctica as to be merged inside that species, only tentatively deserving rank as a separate taxon. The reported chromosome number conforms to western Alaskan O. arctica (i.e., var. barnebyana above). See also O. roaldii.
Higher Taxa
- Oxytropis [6306,genus]