As classified in WFO snapshot
June 2023
Warning: older classification
form
Hydrangea arborescens f. grandiflora
Rehder
This form name was first published in Mitt. Deutsch. Dendrol. Ges. 16: 71 (1907 publ. 1908)
This form name has been reclassified since this snapshot. Its current preferred usage is a synonym .