Verbatim text: Fryxell, P. A. 1985. Sidus sidarum V. The North and Central American species of Sida. Sida 11: 62–91.
Author: Fryxell, P.A.
Year: 1985
Title: Sidus sidarum V. The North and Central American species of Sida
Journal: Sida
Volume: 11
Pages: 62–91