A new series and validated varietal name in Crataegus (Rosaceae)

Transfer of Crataegus silvicola Beadle to ser.Tenuifoliae requires providing a new name for the remainder of ser.Silvicolae, as C. silvicola was the type element of that series.The new series is Crataegus ser.Populneae J.B. Phipps, ser.nov.The paper also validates C. schuettei var.cuneata Kruschke ex J.B. Phipps, var.nov. Recognition of Crataegus ser. PopulneaeCrataegus silvicola Beadle (Bot.Gaz.28(6): 414-416, 1899) is to be transferred from ser.Silvicolae to ser.Tenuifoliae in the author's treatment of Crataegus for vol.9 (Rosaceae) of the forthcoming Flora of North America.It will be treated there as C. iracunda Beadle, which is considered synonymous.Crataegus silvicola Beadle is an illegitimate later homonym of C. silvicola Gandoger (Bull.Soc.Bot.France 18: 448.1872).This transfer thus deprives the remainder of the ser.Silvicolae of any name.I select Crataegus populnea Ashe as the type of the new series and name the new series after it.