О, я тоже нашла по-научному (а то "коровяк" мне ни о чем не говорит, это ж народное название...) -
Verbascum Phoeniceum (Purple Mullein or Temptress Purple) is a species of mullein that is part of the Scrophulariaceae family native to Central Europe, Central Asia and Western China as well as naturalized in certain regions of the US and Canada.
(Wikipedia)