Taxon  Report   4546    
Lactuca biennis  (Moench) Fernald
Biennial wild lettuce,  Tall blue lettuce
Lactuca biennis
© 2006 Louis-M. Landry
Photos from
CalPhotos / Calflora
Lactuca biennis
© 2015 Richard Spellenberg
Lactuca biennis
© 2006 Louis-M. Landry
Lactuca biennis, a dicot, is a perennial herb that is not native to California; it was introduced from elsewhere and naturalized in the wild.

Interactive Distribution Map

Observation Hotline
(observation details)

point, line, or polygon

Plant Characteristics
and Associations

Bloom Period
Lactuca biennis
© 2015 Richard Spellenberg
Genus: Lactuca
Communities: Redwood Forest, wetland-riparian

Wetlands: Equally likely to occur in wetlands and non wetlands

Name Status:
Accepted by JEF + PLANTS

Alternate Names:
PLANTS: Lactuca spicata var. integrifolia
PLANTS: Lactuca spicata
PLANTS: Mulgedium spicatum var. integrifolium
. . .
More information about  Lactuca biennis
Nursery / seed vendor availability from CNPLX
Commercial availability unknown.
Photos on   /   Google Images
Jepson eFlora

Records from the Consortium of California Herbaria

ITIS Original Publication citation


Search the International Plants Names Index

Search (Flora of North America)

website references from Google

Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals, including the Consortium of California Herbaria. [web application]. 2019. Berkeley, California: The Calflora Database [a non-profit organization]. Available:   (Accessed: Jan 20, 2019).