Lactuca serriola L.
Family: Asteraceae
compass-plant,  more...
[Lactuca integrata (Gren. & Godr.) A.Nelson,  more]
Lactuca serriola image
Merel R. Black  
Etymology: Lactuca: name for "milk"
Plants: erect, annual/biennial, 1'-5' tall forb with milky juice; stems leafy, smooth except for prickles at the bottom
Leaves: varying from entire, toothed, to pinnately-divided with narrow to arrow-shaped base, spiny edges and midrib
Flowers: head 3/8" wide with 18-24 yellow rays, drying to a bluish-white; inflorescence with many heads in a long, conical, loosely-branched cluster; blooms July-Sept.
Fruits: dry seed with several obvious lines on both sides
Habitat: disturbed sites, fields
Hazardous: Careful, this plant is hazardous!
Conservation Status: Introduced - naturalized
Lactuca serriola image
Paul Drobot  
Lactuca serriola image
Botancial Illustration  
Lactuca serriola image
Paul Drobot  
Lactuca serriola image
Paul Drobot  
Lactuca serriola image
Paul Drobot  
Lactuca serriola image
Aaron_Carlson  
Lactuca serriola image
Botancial Illustration  
Lactuca serriola image
Paul Drobot  
Lactuca serriola image
Aaron_Carlson  
Lactuca serriola image
Lactuca serriola image
Lactuca serriola image
Lactuca serriola image
Lactuca serriola image
Lactuca serriola image
Lactuca serriola image
Lactuca serriola image
Lactuca serriola image
Lactuca serriola image
Lactuca serriola image
Lactuca serriola image
Lactuca serriola image
Lactuca serriola image
Lactuca serriola image
Lactuca serriola image
Lactuca serriola image
Lactuca serriola image
Lactuca serriola image
Lactuca serriola image
Lactuca serriola image
Lactuca serriola image
Lactuca serriola image
Lactuca serriola image
Lactuca serriola image
Lactuca serriola image
Lactuca serriola image