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.


Our three small species are not easy to find, looking rather moss-like. The majority of specimens were probably found while looking for something else. Like Isoetes, these have both large spores (megaspores) and tiny microspores. Fortunately, spores are not needed for identification.

1. Leaves with a short, scabrous bristle at the apex (this wearing off in older leaves); shoots squarish; plants of dry sandy or rocky sites.

S. rupestris

1. Leaves acute to long-acuminate, the apex not bristle-like nor scabrous; shoots flattened or round in cross section; plants of moist to wet habitats.

2. Leaves minutely many toothed, acute; plants with fertile portions spreading.

S. eclipes

2. Leaves with a few scattered large, spreading, bristle-like teeth, acuminate; plants with erect fertile stems.

S. selaginoides

All species found in Selaginella

Selaginella eclipesSELAGINELLA 
Selaginella rupestrisSAND CLUB MOSS 
Selaginella selaginoidesSPIKEMOSS 


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