Holosteum umbellatum L.
Coefficient of Conservatism: *
Coefficient of Wetness: 5
Wetness Index: UPL
Physiognomy: Ad A-Forb

Holosteum umbellatum R. W. Smith

A rather inconspicuous little Eurasian weed, locally abundant in Michigan in roadsides, lawns, and cultivated ground, but first collected in Michigan as late as 1949 in Washtenaw Co. The species appears to be a winter-annual, blooming as early as April, fruiting promptly, and ordinarily drying up in May; consequently, it is easily overlooked. Plants may flower when as short as 2 cm, although mature fruiting individuals may be as tall as 25 cm.


Berrien County
Calhoun County
Cass County
Hillsdale County
Ingham County
Jackson County
Lapeer County
Lenawee County
Monroe County
Oakland County
Shiawassee County
St. Joseph County
Washtenaw County
Wayne County


MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. January 28, 2021. https://michiganflora.net/species.aspx?id=758.