Lactuca sativa L.  
Family: Asteraceae
Garden Lettuce, more...lettuce
[Lactuca scariola f. integrifolia Beck, moreLactuca scariola var. integrata Gren. & Godr., Lactuca scariola var. integrifolia (Bogenh.) G. Beck]
Lactuca sativa image
Alexander Rodríguez
  • FNA
  • Indiana Flora
  • Resources
John L. Strother in Flora of North America (vol. 19, 20 and 21)
Annuals or biennials, (15-)30-70(-100+) cm. Leaves on proximal 1/2-3/4 of each stem; blades of undivided cauline leaves ovate to orbiculate, margins entire or denticulate, seldom prickly, midribs rarely prickly-setose. Heads usually in corymbiform, sometimes in paniculiform, arrays. Involucres 8-13+ mm. Phyllaries usually erect in fruit. Florets 7-15(-30+); corollas yellow (sometimes streaked with violet), usually deliquescent. Cypselae: bodies pale grayish to whitish or tan, ± flattened, obovate, 3-4 mm, beaks ± filiform, 3-5 mm, faces 5-9-nerved; pappi white, 3.5-4+ mm. 2n = 18. Flowering mostly Jul-Sep. Disturbed sites, abandoned plantings; 10-1000 m; introduced; Ont.; Ala., Calif., Conn., Del., D.C., Idaho, Ill., Ind., Maine, Mass., Mich., Mo., N.H., N.J., N.Mex., N.Y., N.C., N.Dak., Ohio, Okla., Oreg., Pa., R.I., Vt., Wash., W.Va.; Eurasia; introduced also in Mexico; introduced or ephemeral nearly worldwide.
From Flora of Indiana (1940) by Charles C. Deam
I can not separate this form of the prickly lettuce from the preceding one [Lactuca scariola] in reports, so I must rely upon the data of the specimens at hand. It has the same habitat as the species and I believe that it is rather infrequent in the state.

……

Indiana Coefficient of Conservatism: C = null, non-native

Wetland Indicator Status: N/A

Lactuca sativa
Open Interactive Map
Lactuca sativa image
Alexander Rodríguez
Lactuca sativa image
Tracey Slotta
Lactuca sativa image
Alexander Rodríguez
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Leslie Landrum
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Kathy M. Davis, University of Florida Herbarium
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Lactuca sativa image
Click to Display
100 Initial Images
- - - - -
View All Images