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.

Home ยป Apiaceae


Frequently confused with Thaspium, but material with young or mature fruit is easily distinguished not only by the presence of ribs (rather than definite thin wings) on the mericarps but also by the presence of a more or less sessile central fruit in at least some umbellets. In Thaspium, the central flowers in all umbellets are pediceled and staminate, leaving only the marginal and pediceled bisexual flowers to develop fruit.

1. Basal leaves simple, with cordate blades; cauline leaves with 3 leaflets.

Z. aptera

1. Basal leaves compound, like the cauline, with (3–) 5–11 leaflets.

Z. aurea

All species found in Zizia



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