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Sagittaria cristata Engelm.
Common Name: CRESTED ARROWHEAD
Synonym: Sagittaria graminea
Coefficient of Conservatism: 9
Coefficient of Wetness: -5
Wetness Index: OBL
Physiognomy: Nt P-Forb

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
Bay County
Benzie County
Cass County
Charlevoix County
    Only on Beaver Island
Cheboygan County
Chippewa County
Clinton County
Emmet County
Houghton County
Huron County
Ingham County
Kalamazoo County
Kent County
Keweenaw County
    Only on Isle Royale
Lenawee County
Mackinac County
Marquette County
Newaygo County
Presque Isle County
Schoolcraft County
St. Clair County
Van Buren County

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.