Abstract:
"The 18 species of Sphenophorus of South America are arranged in four species groups. Seven new species are described: asper, dolosus, foveatus, levis, mimelus, tenuis, and tomentosus. Four new synonyms are proposed. Corrections are made of names listed erroneously in the catalogues for the genus. A species not occurring in South America is included for other reasons given in the text"--P. [1].