Tall Blue Lettuce - Lactuca biennis
Above: Tall Blue Lettuce near Duck Pond in Madison, Wisconsin (8/16/21).
Tall Blue Lettuce - Lactuca biennis
Tall Blue Lettuce is a native plant in the dandelion tribe within the daisy family. Grows from 2' up to 9'tall (or higher)
The top of the Tall Blue Lettuce stem bears a multibranched inflorescence with many flower heads. Each head is just over a centimeter (0.4 inches) wide and has many whitish to light blue ray florets but no disc florets.
Other names include: Blue wood lettuce, Woodland lettuce
Above: Tall Blue Lettuce (9' tall) near Duck Pond parking lot in Madison, Wisconsin on August 15, 2021.
For more information on Tall Blue Lettuce, visit Wikipedia.
Or, visit the UW-Madison Wisconsin State Herbarium website page about Tall Blue Lettuce - Lactuca biennis.
Tall Blue Lettuce
Lactuca biennis
Above: Tall Blue Lettuce at wood's edge between Marion Dunn Prairie and Oak Savanna in Madison, Wisconsin on August 15, 2021.
Above: Tall Blue Lettuce near Duck Pond parking lot in Madison, Wisconsin on August 16, 2021.
Above: Tall Blue Lettuce seed fluff near Duck Pond parking lot in Madison, Wisconsin on August 17, 2021.
Above: Tall Blue Lettuce seed fluff near Duck Pond parking lot in Madison, Wisconsin on August 19, 2021.
Above: Tall Blue Lettuce specimen collected in South Superior, Wisconsin on August 16, 1910.
Above: 1913 botanical drawing of Tall Blue Lettuce.
Above: Botanical drawing of Tall Blue Lettuce by Helen Sharp circa 1888-1910.
