Dig deeper at SERNEC, a consortium of southeastern herbaria.
Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Rosids: Fabids: Rosales
Flora of North America
Haws: A Guide to Hawthorns of the Southeastern US (Lance, 2014)
Yellow Hawthorn, Yellowleaf Hawthorn
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USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913 pnd_crfl2_001_lvd
For 100 yrs "C. flava" has been applied to any haw in Lacrimatae or Apricae, per Haws: A Guide to Hawthorns of the Southeastern US.