Coefficient of Conservatism:
Coefficient of Wetness:
CREEPING YELLOW CRESS
R. W. Smith
Swamps and muddy to rocky shores along rivers and lakes; also weedy in lawns, cultivated ground, ditches, and city streets. Native of Europe and western Asia, now widespread in the northeastern United States and adjacent Canada, more sporadically across the continent. First collected in Michigan in 1891 in Wayne Co.
This is a perennial species, spreading by creeping roots (often erroneously termed rhizomes) and apparently distributed by fragments along streams and transportation routes as well as with transplanted nursery stock. Our other two "terrestrial" species are annuals or biennials. The petals are usually described as 4–5 mm long, but ours are almost always less than 3.5 mm.