Abstract
Reverend George L. Curtiss, in 1882, published in the Twelfth Report of the State Geologist (Indiana) an article entitled, "Diatoms of the Waters of Indiana." It includes, from Marion county, a list and illustrations of seventy-eight forms. One of these, Staurastrum asperum, is considered now as a desmid rather than a diatom. This paper by Curtiss is, apparently, the only one which has been published on the algae of Marion county in which genera or species are given.
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