Abstract
An account is given of 10 previously described South American Sphagna, including one that is elevated from varietal to specific rank and named S. cribriforme Crum (S. perforatum var. rotundifolium Warnst.). Through the kindness of Allan Fife, I was able to study a number of South American specimens from the Botany Institute of the Department of-Scientific and Industrial Research at Christchurch, New Zea- land (CHR). Among them were a number of isotypes, as well as other authentically named specimens cit- ed by Warnstorf in his Sphagnologia Universalis (1911), particularly specimens from Brazil collected by Ernst Ule. Because many of Warnstorf's types are no longer in existence or are represented only as duplicates in herbaria around the world, an ac- count of these specimens seems warranted. All taxa are Brazilian, except as noted.
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