Abstract
This series of notes includes a considerable number of items based on a study of the last of the extensive unworked material left by the late J. J. Davis, who collected the plant parasitic fungi of Wisconsin over the period 1890-1936. Other notes and descriptions are concerned principally with collections made during the season of 1951, and the year date is omitted in such case-. Unidentified powdery mildews have been noted on: Rubus canadensis, Vilas Co., Woodruff, Autgust 10, 1936. 'CoIl. J. J. Davis; Ratibidca (Lepachys) pinnata, Grant Co., Elmo, July 30; on Asclepias amplexicaulis, Dane Co., Madison, August 26; on Solidcago speciosa, Dane Co., Madison, August 29; on the ray flowers of Brauneria (Echinacea) purpurea, but not on the leaves, Dane Co., Madison, September 1.
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