Euphorbia virgata Waldst. & Kit.
Common Name: LEAFY SPURGE
Synonym: Euphorbia esula
Coefficient of Conservatism: *
Coefficient of Wetness: 5
Wetness Index: UPL
Physiognomy: Ad P-Forb

E. esula of Michigan Flora)

Roadsides, railroads, fields, gravel pits, and such places. A European species, more widely naturalized than E. cyparissias, and an abundant weed in some areas of the northern Lower Peninsula, centering in Otsego Co. where it may carpet open areas with a bright yellow-green color in early summer. First collected in 1885 in Ingham Co.

The sturdy horizontal roots, by which it spreads, make this a difficult species to eradicate. It is almost as leafy as E. cyparissias, but the leaves and bracts are larger and the plant taller. Both species have reduced scale-like leaves at the base of the stems.

All our plants have been annotated as E. virgata by D. V. Geltman (see Geltman, 1998), which differs from E. esula in having the leaves more or less acute at the apex and usually linear to linear-lanceolate, while E. esula has the leaves rounded at the apex and narrowly obovate or oblanceolate. Euporbia esula is known from nearby areas and could well occur in Michigan.

Locations

Alcona County
Alger County
Alpena County
Antrim County
Bay County
Benzie County
Berrien County
Charlevoix County
Cheboygan County
Chippewa County
Clare County
Crawford County
Dickinson County
Emmet County
Gogebic County
Grand Traverse County
Houghton County
Ingham County
Iosco County
Iron County
Kalamazoo County
Kalkaska County
Lake County
Leelanau County
Lenawee County
Mackinac County
Marquette County
Mecosta County
Missaukee County
Montmorency County
Newaygo County
Oakland County
Oceana County
Ogemaw County
Oscoda County
Otsego County
Presque Isle County
Roscommon County
Schoolcraft County
St. Clair County
Washtenaw County

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 13, 2017. http://michiganflora.net/species.aspx?id=1252.