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Common Name:
CRESTED ARROWHEAD
Synonym:
Sagittaria graminea
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Coefficient of Conservatism:
9
Coefficient of Wetness:
-5
Wetness Index:
OBL
Physiognomy:
Nt P-Forb
L. Wallis
Included in S. graminea in Michigan Flora.
Sandy, peaty, or muddy shores, marshes, and swales, including the shores of the Great Lakes; often in shallow water.
Though with a rather narrow distribution centered on the Great Lakes region, this is a relatively frequent species in Michigan and occurs throughout the state. Like Sagittaria graminea, it produces rosettes of stiff underwater phyllodial leaves derived from bladeless petioles, suggestive of knife blades in shape (not the elongate, thin, limp ribbon-like ones of S. cuneata). Unlike S. graminea, this is not confined to "soft water" lakes, but also occurs in richer sites.
Locations
Baraga County
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Bay County
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Benzie County
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Cass County
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Charlevoix County
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Only on Beaver Island
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Cheboygan County
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Chippewa County
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Clinton County
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Emmet County
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Houghton County
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Huron County
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Ingham County
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Kalamazoo County
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Kent County
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Keweenaw County
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Only on Isle Royale
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Lenawee County
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Mackinac County
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Marquette County
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Newaygo County
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Presque Isle County
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Schoolcraft County
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St. Clair County
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Van Buren 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 30, 2023. https://michiganflora.net/species.aspx?id=30.