title: TWO NEW VARIETIES OF STAURASTRUM (DESMIDIACEAE) FROM SÃO PAULO, BRAZIL.
abstract: Two new varieties of Staurastrum (Desmidiaceae) are described from Sao Paulo, southern Brazil: St. polymorphum Bréb. var. itirapinense and St. quadrangulare Bréb. var. sanctipaulense.
authors.affiliation: Department of Botany and Plant Pathology, Michigan State University, East Lansing, Michigan.
authors.forename: C E
authors.initials: CE
authors.lastname: de Mattos Bicudo