Verbatim text: Wilson, P. 1932b. Portulaca. In: N. L. Britton et al., eds. 1905+. North American Flora.... 47+ vols. New York. Vol. 21, pp 328–336.
Author: Wilson, P.
Year: 1932b
Title: Portulaca
Editor: Britton, N.L.
Book year: 1905
Book title: North American Flora
Book volume: 47+ vols
Volume: 21
Pages: 328–336