Robert W. Freckmann Herbarium


Because of technology changes and personnel changes at UWSP and the Wisconsin State Herbarium, the database of plant species housed at this site was merged with the database from the OLD WisFlora website to create a new Flora of Wisconsin website at Currently we are encouraging all Wisplant viewers to begin using the Flora of Wisconsin website as soon as possible. Wisplants will remain operational through July 13th. After that date, all traffic to Wisplants will be redirected to the Flora of Wisconsin website.

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  Lactuca biennis (Moench) Fernald image
Photographer: Merel R. Black           

Kenneth J. Sytsma

Merel R. Black

Merel R. Black

Merel R. Black

Merel R. Black

Merel R. Black
Family Asteraceae
Lactuca biennis (Moench) Fernald
tall blue lettuce, woodland lettuce
Lactuca: name for "milk"
biennis: biennial, completing the life cycle in two growing seasons, usually blooming and fruiting in the second
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Native
Plant: erect, annual/biennial, 2' -6 1/2' tall, mostly smooth forb with milky juice; stems very leafy
Flower: head 3/8" wide with 15-34 bluish to white rays; inflorescence with many heads in long, narrow clusters; blooms July-Sept.
Fruit:dry seed with several obvious lines on both sides, and with tan, fluffy pappus
Leaf:either pinnately-divided or toothed, sometimes with arrow-shaped bases
Habitat: moist; thickets

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

Flora of North America (off site)
Lactuca biennis (Moench) Fernald f. aurea (Jenn.) Fernald
Lactuca biennis (Moench) Fernald f. integrifolia (Torr. & A.Gray) Fernald
Lactuca spicata auct. non (Lam.) Hitchc.
Lactuca spicata (Lam.) Hitchc. var. integrifolia (Torr. & A.Gray) Britton
Mulgedium spicatum auct. non (Lam.) Small
Mulgedium spicatum (Lam.) Small var. integrifolium (Torr. & A.Gray) Small
Sonchus biennis Moench

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