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Carex leavenworthii Dewey

Common Name: SEDGE
Coefficient of Conservatism: *
Coefficient of Wetness: 5
Wetness Index: UPL
Physiognomy: Ad P-Sedge

Known in Michigan only from lawns, roadsides, and sandy banks, and especially fond of sidewalk cracks in sun or partial shade. Introduced from farther south, though apparently native as far north as Pelee Island in Lake Erie, Ontario, where collected as early as 1882. First collected in Michigan in 1937 in Kalamazoo Co.

Carex leavenworthii is reminiscent of a slender, narrow-leaved C. cephalophora. It has shorter-awned pistillate scales and the perigynium beaks are shorter. The perigynia turn from pale green eventually to pale brown. Carex cephalophora has at least the lower pistillate scales clearly awned, longer perigynium breaks, and perigynia that turn a yellow-green to golden yellow color at full maturity.

B. S. Walters

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Counties
Jackson
Kalamazoo
St. Joseph
Washtenaw

Citation:
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. March, 17, 2025
https://lsa-miflora-p.lsait.lsa.umich.edu/#/record/993