Spirogyra crassa (Kütz.) Kütz.

CRYPTOGAM 1C HERBARIUM
FIELD MUSEUM OF NATURAL HISTORY
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Field Museum of Natural Histoa
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Josephine E. Tilden. American Algae.
59. Spirogyra crassa Kg. Alg. Exsicc. n. 98. 1833—36.
Diameter of vegetative cells 112 mik., length 250 mik. ¡spirals 6 or 7,
making 1.5—2 turns, dentate, close together.
In sluggish spring water.
Near Purgatory creek, Eden Prairie, Hennepin county, Minnesota.
J. E. T. 14 Jy. 1894.
CRYPTOGAMIC HERBARIUM, FIELD MUSEUM OF NATURAL HISTORY
JOSEPHINE E. TILDEN
AMERICAN ALGAE
Century I. Published 1894.
Received by exchange from the Farlow Herbarium of Harvard University
November 12,1938. Accession No. 6078.
03047592