Crataegus aestivalis (Walter) Torrey & A. Gray
      
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2 284054 Crataegus aestivalis (Walter) Torrey & A. Gray [80 663554 Mespilus aestivalis Walter] Rosaceae
C.S. Sargent, Silva, vol. 4 : t. 192 (1892) [C.E. Faxon]