Verbatim text: Phipps, J. B. and K. A. Dvorsky. 2006. Crataegus ser. Parvifoliae and its putative hybrids in the southeastern United States. Sida 22: 423–445.
Author: Phipps, J.B., Dvorsky, K.A.
Year: 2006
Title: Crataegus ser. Parvifoliae and its putative hybrids in the southeastern United States
Journal: Sida
Volume: 22
Pages: 423–445