Please try our next iteration of the Michigan Flora Online here. Beginning on February 1, 2023, 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.


Included in Primulaceae in Michigan Flora.

1. Corolla yellow to red (rarely blue); leaves opposite or in multiple whorls.

2. Leaves sessile, not over twice as long as broad; corolla red (rarely blue); capsule circumscissile.


2. Leaves petioled or over twice as long as broad (or both); corolla yellow; capsule dehiscing longitudinally.

Lysimachia (in part)

1. Corolla white; leaves alternate or in a single whorl.

3. Leaves alternate; flowers 5-merous, in a terminal raceme.

Lysimachia clethroides

3. Leaves in a single whorl; flowers usually 7-merous, solitary on 1–3 (–4) pedicels.



MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. January 29, 2023.