Map of western North America showing Harpagonella collections in major herbaria based on available specimen data from GBIF and Bajaflora. Type collection localities are indicated with black star for H. palmeri and a red star for H. arizonica.

  Part of: Guilliams CM, Jang T, Baldwin BG (2016) Molecular and morphological evidence for recognition of two species within Harpagonella (Amsinckiinae, Boraginaceae). PhytoKeys 70: 17-30.