As classified in WFO snapshot
December 2023
latest classification for this taxon
variety
Eupatorium viscidum var. protractum
Griseb.
This variety name was first published in Abh. Königl. Ges. Wiss. Göttingen 19: 168 (1874)
This variety name has been reclassified since this snapshot. Its current preferred usage is a synonym .