Verbatim text: Barkley, T. M. 1999. The segregates of Senecio, s.l., and Cacalia, s.l., in the flora of North America North of Mexico. Sida 18: 661–672.
Author: Barkley, T.M.
Year: 1999
Title: The segregates of Senecio, s.l., and Cacalia, s.l., in the flora of North America North of Mexico
Journal: Sida
Volume: 18
Pages: 661–672