Verbatim text: Barkley, T. M. 1978. Senecio. In: N. L. Britton et al., eds. 1905+. North American Flora.... 47+ vols. New York. Ser. 2, part 10, pp. 50–139.
Author: Barkley, T.M.
Year: 1978
Title: Senecio
Editor: Britton, N.L.
Book year: 1905
Book title: North American Flora
Book volume: 47+ vols
Journal: Ser. 2
Volume: 10
Pages: 50–139