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Prickly Lettuce [Lactuca serriola]

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Common Name: Prickly Lettuce
Scientic Name: Lactuca serriola
Colors: Yellow
Months Appearing: July, August

Alien, European orgin. Also called Milk Thistle and Compass Plant.

Closest wild relative of cultivated lettuce.

Flowers less than 1/2 inch. About 1 cm.

Leaves have stiff prickles on back of leaf midrib.

Height: 1 to 5 ft..

Roadeside and waste places. July 31. 9398,9402, 9420.