Reference:Powell1978a
Verbatim text: Powell, A. M. 1978. Systematics of Flaveria (Flaveriinae–Asteraceae). Ann. Missouri Bot. Gard. 65: 590–636.
Author: Powell, A.M.
Year: 1978
Title: Systematics of Flaveria (Flaveriinae–Asteraceae)
Journal: Ann. Missouri Bot. Gard
Volume: 65
Pages: 590–636
BHL link: http://www.biodiversitylibrary.org/part/13529