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.


We follow O’Kane & Al-Shehbaz (1997) in placing Arabis lyrata into Arabidopsis; indeed, our two species look similar and are sometimes confused. See Koch et al. (2008) for more information.

1. Petals (4–) 5–8 (–9) mm long, seeds ca. 1 mm long.

A. lyrata

1. Petals 2–4.2 mm long, seeds ca. 0.3–0.5 mm.

A. thaliana

All species found in Arabidopsis

Arabidopsis lyrataSAND CRESS 
Arabidopsis thalianaMOUSE-EAR CRESS 


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