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Common Name:
WILD LETTUCE, TALL LETTUCE
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Coefficient of Conservatism:
2
Coefficient of Wetness:
3
Wetness Index:
FACU
Physiognomy:
Nt B-Forb
R. W. Smith
In much the same diverse habitats as L. biennis: borders and trails in forests; promptly invading disturbed sites and clearings; sandy pine plains, conifer swamps, rocky ground, shores, fields; roadsides and railroads.
This species and L. biennis are the two widespread common native wild lettuces in Michigan, and they can be easily separated by pappus color: silky white in L. canadensis and dark in L. biennis. The two species are known to hybridize but presumed hybrids, with intermediate characters, are apparently quite scarce in Michigan.
Some plants have many of the leaves unlobed and ± lanceolate, but usually the leaves are all or mostly lobed and the lobes tend to be narrowly lanceolate in contrast with the broad lobes in L. biennis. The foliage is amazingly variable in both species.
Locations
Alger County
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Allegan County
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Alpena County
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Antrim County
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Arenac County
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Baraga County
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Barry County
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Bay County
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Benzie County
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Berrien County
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Calhoun County
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Cass County
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Charlevoix County
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Including Beaver Island
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Cheboygan County
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Chippewa County
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Including Drummond Island
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Clare County
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Clinton County
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Crawford County
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Delta County
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Dickinson County
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Emmet County
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Gogebic County
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Grand Traverse County
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Gratiot County
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Hillsdale County
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Houghton County
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Huron County
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Ingham County
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Iosco County
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Iron County
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Isabella County
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Jackson County
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Kalamazoo County
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Kalkaska County
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Kent County
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Keweenaw County
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Including Isle Royale
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Lake County
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Lapeer County
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Leelanau County
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Including Fox Islands
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Including Manitou Islands
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Lenawee County
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Livingston County
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Luce County
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Mackinac County
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Including Bois Blanc, Mackinac, Round Islands
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Macomb County
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Manistee County
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Marquette County
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Mason County
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Mecosta County
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Midland County
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Monroe County
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Muskegon County
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Newaygo County
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Oakland County
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Oceana County
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Ogemaw County
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Ontonagon County
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Oscoda County
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Otsego County
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Ottawa County
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Presque Isle County
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Roscommon County
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Sanilac County
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Schoolcraft County
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St. Clair 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 30, 2023. https://michiganflora.net/species.aspx?id=385.