Oxytropis nigrescens subsp. pygmaea (Pallas) Hultén Dataset Database of Vascular Plants of Canada (VASCAN) Rank SUBSPECIES Classification class Equisetopsida order Fabales family Fabaceae genus Oxytropis species Oxytropis nigrescens Name Homonyms Oxytropis nigrescens subsp. pygmaea (Pallas) Hultén Oxytropis nigrescens var. pygmaea (Pallas) Chamisso