Atlas of North European vascular plants
1741 Valeriana capitata Link
This polymorphic, arctic-montane species occurs from N. Russia through Siberia to northwestern N. America. In Alaska and Yukon var. bracteosa (Britt.) Hult. is distinguished. In W. and SW. U.S.A. the following subspecies occur, viz. subsp. californica (Hell.) F. G. Mey., subsp. pubicarpa (Rydb.) F. G. Mey. and subsp. acutiloba (Rydb.) F. G. Mey.