Crataegus berberifolia, the barberry hawthorn, is a species of hawthorn from the southeastern United States. There are two varieties: C. berberifolia var. berberifolia has 20 stamens with cream-coloured anthers, and C. berberifolia var. engelmanii has 10 stamens with purplish pink anthers.[1]

References

  1. ^ Phipps, J.B. (2006). "Crataegus spes-aestatum, a new species in series Punctatae (Rosaceae), and six new varietal names from the Missouri Crataegus Flora". Novon. 16 (3): 381–7. doi:10.3417/1055-3177(2006)16[381:CSANSI]2.0.CO;2. S2CID 85918049.