Cirsium muticum Michx.

• Region

  North America

• Country

  United States of America

• State/Province

  Iowa

• County/Municipio

  Howard Co.

• Locality

  Approximately 4.5 miles west/northwest of Protivin.

• Township, Range, Section

  37N, 11W, 7 SW4 SW4 SW4 NE4

• Coordinates

  43.235, -92.1899

• Georeferencing Method

  UTM Conversion Calculator. Used UTM conversion calculator (http://rcn.montana.edu/Resources/Converter.aspx) to convert UTM coordinates to decimal degrees.

• Geodetic Datum

  NAD83

• Distribution

  Map all specimens of this taxon

The New York

Botanical Garden copyright reserved

Ada Hayden Herbarium
Iowa State University
Flora of Iowa

Cirsium muti cum Michx.

Howard County: T97N R11W Section 7 SW4 SW4 SW4 NE4
UTM (NAD83, 15T): 565779 East, 4787233 North

A disturbed mesic/wet-mesic tallgrass prairie occurs approximately 4.5 miles
west/northwest of Protivin. It is about 1 acre in size and mostly surrounded by
deciduous forest. The soil is mapped as Schley silt loam, 1 to 4 percent slopes
(407B), an Udollic Ochraqualf. The prairie is on the Iowan Surface.

There are 150-200 genets with flowers and/or fruits plus lots of vegetative
rosettes. This is probably the largest population of Cirsium muticum that I have
ever seen in Iowa. The corollas are medium purple-red. The population is
past peak bloom, as about % of the heads only have fruits. Cirsium muticum is
associated with Agrostis qiaantea. Baptisia lactea. Eupatorium perfoliatum.
Potentilla simplex. Prunella vulgaris. Solidaoo canadensis. Solidaoo qiaantea
and Verbena hastata.

Mark J. Leoschke 2633
Randy Ellingson

September 10, 2006

02052291

02052291