Veronica anagallis-aquatica L.
Common Name: WATER SPEEDWELL
Coefficient of Conservatism: 4
Coefficient of Wetness: -5
Wetness Index: OBL
Physiognomy: Nt P-Forb

Wet sandy or muddy shores and ditches, especially in springy places; in flowing water of streams and rivers as well as on their banks; rarely on floating mats in peatlands.

Following a number of recent authors who do not distinguish American from Old World plants of this species, we include here V. catenata Pennell, often applied to the American element (to which also the names V. comosa and V. salina have sometimes been misapplied). The typical Old World element was collected in 1936 in Keweenaw Co. (F. J. Hermann 7998, MICH, GH). It differs in more erect-ascending pedicels, relatively narrower sepals, and capsules a bit narrower than long.

This is quite a variable species. Most of our specimens are ± glandular-pubescent in the raceme and on the upper part of the stem (var. glandulosa Farw.) The lower leaves and leaves on basal offshoots sometimes are short-petioled. Rarely plants have alternate racemes, as in V. scutellata. Submersed plants (especially in flowing water) frequently have very limp and rather elongate aquatic leaves; these are opposite so such plants ought not be confused with a Potamogeton, which they might otherwise resemble.

Locations

Allegan County
Alpena County
Arenac County
Barry County
Benzie County
Berrien County
Charlevoix County
    Including Beaver Island
Cheboygan County
Clare County
Clinton County
Crawford County
Delta County
Emmet County
Gogebic County
Grand Traverse County
Gratiot County
Hillsdale County
Ingham County
Ionia County
Iosco County
Isabella County
Jackson County
Kalamazoo County
Kalkaska County
Kent County
Keweenaw County
Lake County
Lapeer County
Leelanau County
Lenawee County
Mackinac County
    Including Bois Blanc, Mackinac, Round Islands
Macomb County
Manistee County
Mason County
Mecosta County
Menominee County
Midland County
Monroe County
Montcalm County
Montmorency County
Newaygo County
Oakland County
Ogemaw County
Ontonagon County
Oscoda County
Otsego County
Ottawa County
Presque Isle County
Schoolcraft County
Shiawassee County
St. Clair County
St. Joseph County
Washtenaw County
Wayne County
Wexford County

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 12, 2017. http://www.michiganflora.net/species.aspx?id=1971.