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.

Crataegus succulenta Link
Common Name: HAWTHORN
Coefficient of Conservatism: 5
Coefficient of Wetness: 5
Wetness Index: UPL
Physiognomy: Nt Tree

Crataegus succulenta R. W. Smith

Forests of diverse sorts, borders of forests, river banks and floodplains, lake shores, ravines, thickets, hillsides, rocky openings; roadsides, fencerows, fields.

A striking species with very long thorns, to nearly 10 cm in some specimens. Two varieties, often recognized as species, occur in Michigan: var. succulenta (stamens ca. 20, anthers ca. 0.4–0.8 mm long) and var. macracantha (Loud.) Eggl. (stamens ca. 10, anthers ca. 1–1.2 mm long). Var. macracantha is widespread, from the Upper Peninsula into southern Michigan, and var. succulenta is only in the Lower Peninsula.


Arenac County
Barry County
Charlevoix County
    Only on Beaver Island
Cheboygan County
Delta County
Dickinson County
Emmet County
Gratiot County
Hillsdale County
Ingham County
Ionia County
Iosco County
Iron County
Kalamazoo County
Kent County
Keweenaw County
Lenawee County
Livingston County
Mackinac County
Macomb County
Mason County
Menominee County
Montcalm County
Newaygo County
Oakland County
Ontonagon County
Osceola County
Oscoda County
Otsego County
Schoolcraft County
St. Clair County
Washtenaw County
Wayne County


MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. January 30, 2023.