As classified in WFO snapshot
December 2024
Warning: older classification
form
Veronicastrum virginicum f. purpureum
(Pursh ex Eaton) Farw.
This form name was first published in Rep. (Annual) Michigan Acad. Sci. 21: 370 (1920)
This form name has been reclassified since this snapshot. Its current preferred usage is a synonym .