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. September 24, 2017.