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.


The weedy Eurasian annual Thymelaea passerina (L.) Coss. & Germ. has been collected in dry fields in Lambton Co., Ontario, and near Milwaukee, Wisconsin, and probably will be found in Michigan. It is slender, with tiny flowers and tiny, soon deciduous leaves; rather reminiscent of a slender, erect Polygonum. Our two species are shrubs with relatively conspicuous flowers before the leaves expand.

1. Flowers pink or occasionally white; stamens included in the perianth tube; fruits bright red or occasionally yellow (in white-flowered plants); buds glabrous.


1. Flowers yellow; stamens exserted, ripe fruits yellowish-green; buds pubescent.


All species found in Thymelaeaceae

Daphne mezereumDAPHNE 
Dirca palustrisLEATHERWOOD 


MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. February 1, 2023.