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Common Name:
RICE-GRASS
Synonym:
Oryzopsis racemosa, Piptatherum racemosum
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Coefficient of Conservatism:
8
Coefficient of Wetness:
5
Wetness Index:
UPL
Physiognomy:
Nt P-Grass
D. Dister
Oryzopsis racemosa of Michigan Flora.
Usually in moist rich deciduous forests and forested dunes, sometimes in disturbed places; less often associated with jack pine and oak.
The awn of the lemma may be as long as 23 mm in this species, although usually less than 20 mm. The widest leaf blades are usually 1 cm or more broad.
Romaschenko et al. (2011) provide the rational for segregating Patis, a grass genus with an eastern Asian eastern North American disjunct distribution, like Brachyelytrum and Zizania.
Locations
Allegan County
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Barry County
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Benzie County
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Berrien County
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Charlevoix County
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Delta County
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Dickinson County
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Emmet County
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Grand Traverse County
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Ingham County
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Jackson County
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Kalamazoo County
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Kent County
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Leelanau County
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Including Manitou Islands
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Mackinac County
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Marquette County
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Mason County
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Menominee County
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Montcalm County
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Muskegon County
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Newaygo County
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Oakland County
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Ontonagon County
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Ottawa County
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St. Joseph County
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Van Buren County
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Washtenaw County
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Wayne County
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Citation:
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. January 28, 2023. https://michiganflora.net/species.aspx?id=2187.