
![Prickly Lettuce [Lactuca serriola] Prickly Lettuce [Lactuca serriola]](/images/July/Yellow/thumbnail_IMG_9398.jpg)
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.