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 douglasii Lindl.
Coefficient of Conservatism: 7
Coefficient of Wetness: 0
Wetness Index: FAC
Physiognomy: Nt Tree
Status: SC

Borders of forests, sometimes quite common locally, as in the vicinity of Delaware, Keweenaw Co.; often in rocky savannas and on rock summits; also in thickets on sand dunes and shores. This species is strikingly disjunct from the West.

A tall shrub, our only species of Crataegus with dark blue-black fruit (at full maturity) and hence our easiest to recognize when mature.


Alger County
Alpena County
Baraga County
Cheboygan County
Chippewa County
Houghton County
Keweenaw County
    Including Isle Royale
Mackinac County
    Including Bois Blanc, Mackinac, Round Islands
Marquette County
Ontonagon County


MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. January 31, 2023.