Horkelia sericea (A. Gray) Rydb.
      
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2 536347 Horkelia sericea (A. Gray) Rydb. [80 536270 Horkelia californica var. sericea A. Gray] Rosaceae
P.A. Rydberg, Monogr. N. Amer. Potent.: t. 60 (1898)