|Bienniel weed which grows tall with alternating, hairless leaves that are edged by small teeth. Overwintering foliage turns reddish with cold or in bright sunlight. Produces a rosette of leaves in its first season, then bolts into heavy bloom and seed reproduction. Yellow-orange flowers at tips of purplish, branched stems. Self-sows abundantly. Appears on roadsides, disturbed areas or in open woods or pastures. Common to Canada and the U.S., except for New Mexico, Arizona and Wyoming. Also known as wild lettuce.