Horkelia fusca Lindl. [ Horkelia parviflora Nutt. ex Hook. & Arn.]
      
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12 536295 Horkelia fusca Lindl. [80 536330 Horkelia parviflora Nutt. ex Hook. & Arn.] Rosaceae
P.A. Rydberg, Monogr. N. Amer. Potent.: t. 68 (1898)