Coefficient of Conservatism:
Coefficient of Wetness:
R. W. Smith
Roadsides and railroads, ditches, river banks, clearings and sandy disturbed ground. Spreading rapidly along highways in recent years, although known from banks of the Red Cedar River in East Lansing, Ingham Co., as early as 1894.
A conspicuous tall plant, often 2–3 m or even more in height, with strongly ascending branches. The connate bases of the cauline leaves form a conspicuous cup ca. 1.5–7 (–13) cm deep around the stem at some nodes.