As classified in WFO snapshot
December 2023
latest classification for this taxon
form
Oenothera biennis f. stenopetala
This form name was first published in Naturaliste Canad. 93: 644. 1966
At the time of this classification snapshot, this form 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-0001242852.