Verbatim text: Rossbach, R. P. 1940. Spergularia in North and South America. Rhodora 42: 57–83, 105–143, 158–193, 203–213.
Author: Rossbach, R.P.
Year: 1940
Title: Spergularia in North and South America
Journal: Rhodora
Volume: 42
Pages: 57–83