August 17, 2025 - Lactuca serriola, also called prickly lettuce, milk thistle (not to be confused with Silybum marianum, also called milk thistle), compass plant, and scarole, is an annual or biennial plant in the tribe Cichorieae within the family Asteraceae. It has a slightly fetid odor and is commonly considered ...

Lactuca serriola L. (wild lettuce) is a highly invasive C3 weed in many countries, including Australia, Canada, and the USA. This weed is a severe threat to agricultural systems, especially in crops grown with reduced or no-tillage approaches, which commonly include wheat, cereals and pulses.

September 21, 2025 - The plant most know as wild lettuce, ... plant. Native to the Mediterranean, L. serriola is a prickly weed that grows widespread in disturbed areas, sidewalks and yards....

≡ Lactuca sativa subsp. serriola (L.) Frietema · = Hieracium lactuca E.H.L.Krause · = Lactuca albicaulis Boiss. = Lactuca altaica Fisch. & C.A.Mey. = Lactuca angustifolia Lam. ex Steud. = Lactuca auriculata Aitch. = Lactuca bracteata Wall. = Lactuca coriacea Sch.Bip.

Lactuca serriola is a species of plant known for yielding various lactucin derivatives, including certain guaianolides and sesquiterpenic acid esters, and has been studied for its chemical properties in different geographical locations, such as Poland and Spain.

Lactuca serriola is closely related ... America, as well as other introduced species; L. serriola is the most abundant introduced lettuce in most of North America....

Mikulka, J. & Chodova, D. (2003) Germination and emergence of prickly lettuce (Lactuca serriola L.) and its susceptibility to selected herbicides.

5. Lactuca serriola L. E · prickly lettuce. Lactuca scariola L.; L. scariola L. var. integrata Gren. & Godr.; L. scariola L. var. integrifolia (Bogenh.) G. Beck • CT, MA, ME, NH, RI, VT. Fields, roadsides, waste areas. No · Lactuca scariola L. Lactuca scariola L.

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Family - Asteraceae/Cichorieae · Habit - Annual or biennial forb with white, milky sap

Lactuca sativa subsp. serriola (L.) Frietema in Cult.

April 29, 2024 - Lactuca serriola L. is an annual herbaceous plant species belonging to the Asteraceae family, called Prickly lettuce, Wild lettuce, and Jagged lettuce. L. serriola grows on grassy and rocky slopes in many regions in Europe, Asia, Australia, ...

Lactuca serriola L., syn, Lactuca scariola · Family Name: Asteraceae (Compositae) - Aster or Sunflower Family · Identification Notes · Life Cycle · introduced annual, winter annual or biennial, reproducing by seed · Stems · upright, tall, usually prickly near ground, leafy, hollow ·

Lactuca serriola is the most common exotic wild lettuce in Oregon. In some older references it is referred to as L.

Lactuca serriola (prickly lettuce, compass plant) is a winter or summer annual, introduced to Canada from Eurasia, and found in all provinces except Newfoundland. It occupies a variety of disturbed sites, and is becoming an increasing problem ...

A European lettuce with prickly leaves, the closest relative to cultivated lettuce · This is an annual or biennial species native to Eurasia, but widely naturalized in North America. It is the closest wild relative to cultivated lettuce. It is a very tall, branched plant growing 2-7 feet tall.

Notes: The beak breaks easily, so that the pappus will presumably often be missing when this species is encountered. The three species of Lactuca covered in this key have very similar fruits, but L. sativa generally has larger fruits than L. saligna and L. serriola (1-2 mm wide versus up to ...

Lactuca serriola is native to Eurasia and north Africa, and has become naturalized elsewhere.

A weed in fields and waste places; native of Europe, now naturalized throughout most of the U.S. July–Sept. The common form with lobeless lvs, called var. integrata Gren. & Gordon, may reflect introgression from L. sativa L., cultivated lettuce, with which L. serriola hybridizes freely.

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