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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.

Galinsoga quadriradiata Ruiz & Pav.
Common Name: QUICKWEED
Coefficient of Conservatism: *
Coefficient of Wetness: 3
Wetness Index: FACU
Physiognomy: Ad A-Forb

Galinsoga quadriradiata B. S. Walters

Native to Central and South America but like G. parviflora now a nearly cosmopolitan weed of temperate and subtropical areas. Thrives in populated areas: poorly kept lawns; along hedges, sidewalks, and gardens; roadsides and parks; and in greenhouses. First collected in Michigan in Ingham Co. (1892), but soon (1901) found in Detroit, Wayne Co.; widespread across southern Michigan and even in Gogebic Co. before 1920.


Allegan County
Alpena County
Berrien County
Calhoun County
Cass County
Cheboygan County
Delta County
Emmet County
Gogebic County
Hillsdale County
Houghton County
Ingham County
Kalamazoo County
Kent County
Lenawee County
Livingston County
Marquette County
Mecosta County
Menominee County
Monroe County
Muskegon County
Newaygo County
Oceana County
Ottawa 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.