Atlas of North European vascular plants
Hultén & Fries 1986
1256 Hedysarum alpinum L.
This polymorphic species occurs in parts of Eurasia. The map includes also three closely related taxa, often distinguished as separate species, viz. H. vicioides Thrcz. and H. ussuriense Schischk. & Kom. in E. Asia and H americanum (Michx) Britt. in N. America (braken line).