Coefficient of Conservatism:
Coefficient of Wetness:
P. hirtus of Michigan Flora.
An annual, native to the Pacific Northwest, collected in a moist field with Eleocharis obtusa near Schoolcraft, Kalamazoo Co., in 1938. It was probably introduced by the railroad running beside the field. Collected again in 1939 at a nearby site.
The white flowers in a densely curled cyme tip make the “popcorn” name an apt one.