Compositae source details
(1901). Manual of the Flora of the northern States and Canada
322490
1901
Publication
Date
action
by
Aster ×gravesii E.S.Burgess ex Britton (original description)
Eupatorium verbenifolium var. saundersii Porter ex Britton (original description)
Helianthus ×kellermanii Britton (original description)
Eupatorium verbenifolium var. saundersii Porter ex Britton (original description)
Helianthus ×kellermanii Britton (original description)
