Tall Blue Lettuce - Lactuca biennis

''Lactuca biennis'' is a North American species of wild lettuce known by the common names tall blue lettuce and blue wood lettuce. It is widespread across much of the United States and Canada from Alaska and Yukon south as far as California, New Mexico, and Georgia.

''Lactuca biennis'' is a biennial herb in the dandelion tribe within the daisy family growing from a taproot to heights anywhere from one half to four meters . There are deeply lobed, toothed leaves all along the stem. The.. more