Coefficient of Conservatism:
Coefficient of Wetness:
GLAUCOUS WHITE LETTUCE
R. W. Smith
Calcareous sandy or rocky shores and interdunal flats, including conifer thickets on them; fens, wet prairies, moist hollows; rock crevices on Lake Superior.
An easily recognized, rather glaucous plant with clasping leaf bases and an elongate, cylindrical, hairy inflorescence that strongly nods when in bud but becomes erect as the heads open. The stem and leaves below the inflorescence are glabrous.
Prenanthes aspera Michx., an uncommon species, reported from northern Indiana, may some day be found in southern Michigan. It has the stem and cauline leaves ± rough-hairy, but otherwise resembles P. racemosa.