Scirpus hattorianus Makino
Synonym: Scirpus atrovirens
Coefficient of Conservatism: 3
Coefficient of Wetness: -5
Wetness Index: OBL
Physiognomy: Nt P-Sedge

Included in S. atrovirens in Michigan Flora.

Wet depressions in trails, old roads, and fields, ditches, wet meadows, marshes, open forests.

A common species of open wet ground, more slender than S. atrovirens, and often in somewhat disturbed habitats that may also be only seasonally wet. A few specimens are apparent hybrids, S. atrovirens × S. hattorianus; these have abortive seeds and are mostly viviparous.


Alger County
Arenac County
Baraga County
Berrien County
Calhoun County
Charlevoix County
    Including Beaver Island
Cheboygan County
Delta County
Dickinson County
Houghton County
Kalamazoo County
Kalkaska County
Kent County
Keweenaw County
    Including Isle Royale
Lake County
Lenawee County
Mackinac County
Marquette County
Mason County
Mecosta County
Midland County
Ontonagon County
Roscommon County
Schoolcraft County
St. Clair County
Tuscola County
Wayne County


MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. July 27, 2021.