Elodea nuttallii (Planch.) H. St. John
Common Name: SLENDER WATERWEED
Coefficient of Conservatism: 5
Coefficient of Wetness: -5
Wetness Index: OBL
Physiognomy: Nt P-Forb

In lakes, pools, and rivers, much more local than E. canadensis.

Usually a distinctive small- (or at least narrow-) leaved plant more delicate than the much more common E. canadensis. Occasionally the two may grow in the same body of water. In some forms the leaves are rather delicate, narrow, 5–10 times as long as wide; in others the leaves (especially on flowering branches) are short (scarcely 5 mm long), stiffish and often ± recurved, the length/width ratio as in E. canadensis but the leaves smaller and less imbricate than in that species. Staminate material is apparently more common than in E. canadensis, and careful examination will usually reveal spathes, making identification possible.

Locations

Alpena County
Baraga County
Barry County
Bay County
Cass County
Clinton County
Emmet County
Gogebic County
Hillsdale County
Houghton County
Ingham County
Iron County
Kalamazoo County
Kalkaska County
Kent County
Livingston County
Luce County
Manistee County
Mason County
Menominee County
Monroe County
Muskegon County
Newaygo County
Ottawa County
Schoolcraft County
Van Buren County
Washtenaw County

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 11, 2017. http://www.michiganflora.net/species.aspx?id=1448.