Please try our next iteration of the Michigan Flora Online here. Beginning on February 1, 2023, michiganflora.net will point to this new site.

The new site offers several benefits over the existing website, including real coordinate mapping, giving a clearer view of the density of documentation as well as more precision about plant distributions and their link to landforms. We will also have the ability to update species pages more regularly, both in terms of new collections and as more existing Michigan specimens are georeferenced. In addition, we have a better photo display, and offer indented keys.

1. Leaves densely soft-pilose, the blades less than twice as long as broad; achenes black; bracts about equaling or shorter than the flowers; anthers ca. 1 mm long.

P. judaica

1. Leaves glabrous to only sparsely and minutely pilose, the blades mostly at least (2.5–) 4–6 times as long as broad; achenes pale whitish to brown; bracts much exceeding the flowers; anthers less than 0.5 mm long.

P. pensylvanica