As classified in WFO snapshot
December 2023
latest classification for this taxon
variety
Pycnanthemum pycnanthemoides var. viridifolium
This variety name was first published in Rhodora 39: 445 (1937)
At the time of this classification snapshot, this variety name was accepted by WFO (placed as the accepted name of a taxon). Its description and other taxonomic data can be found on World Flora Online, id: wfo-0001377040.