Robert W. Freckmann Herbarium


  Lactuca canadensis L. image
Photographer: Robert W. Freckmann           

Merel R. Black

Robert Bierman

Rob Baller

Robert W. Freckmann
Family Asteraceae
Lactuca canadensis L.
Canada lettuce, tall lettuce, tall wild lettuce, wild lettuce
Lactuca: name for "milk"
canadensis: of or referring to Canada
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Native
Plant: erect, annual/biennial, 1'-8' tall forb with milky juice; stems leafy, smooth with whitish fuzz
Flower: head 3/8" wide with 13-22 yellow to purple rays usually longer than wide; inflorescence with many heads in long, conical, loosely-branched cluster; blooms July-Sept.
Fruit:blackish, flat dry seed with only one obvious line on each side, and with white, fluffy pappus
Leaf:varying from entire, toothed, to pinnately-divided with narrow to arrow-shaped base, edges not spiny
Habitat: moderate moisture; meadows, fields, woods
(Glossary)

More Information Natural Communities Herbarium Specimens
All Lactuca list Ethnobotany Information Google- Images or Text

Flora of North America (off site)
Synonyms 
Lactuca canadensis L. var. canadensis
Lactuca canadensis L. var. integrifolia (Bigelow) Torr. & A.Gray
Lactuca canadensis L. var. latifolia Kuntze
Lactuca canadensis L. var. latifolia Kuntze f. exauriculata Wiegand
Lactuca canadensis L. var. longifolia (Michx.) Farw.
Lactuca canadensis L. var. longifolia (Michx.) Farw. f. angustipes (Wiegand) Farw.
Lactuca canadensis L. var. obovata Wiegand
Lactuca canadensis L. var. spinulosa Jenn.
Lactuca canadensis L. var. typica Wiegand
Lactuca canadensis L. var. typica Wiegand f. angustipes Wiegand
Lactuca sagittifolia Elliott

         
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