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Contributed by Harvard University Botany Libraries.
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Transcription
Wednesday, Aug. 31 - '93
with L.H. Johnson
Fresh Pond
870. Polycystis elabens, Kütz
in small quantity
with Anabaena varabilis et al.
on floating algae
871. Rivularia
Sunday Sept. 10 - '93
872. Phormidium
on woodwork - shore of Lake Mich.
Chicago.
Monday, Sept. 12 '93
873. Cleadophora glomerata
Niagara Falls