Lindernia dubia (L.) Pennell
Common Name: FALSE PIMPERNEL
Synonym: Lindernia anagallidea
Coefficient of Conservatism: 4
Coefficient of Wetness: -5
Wetness Index: OBL
Physiognomy: Nt A-Forb

An inconspicuous annual of bare mud or wet sand on shores, river banks, marsh and pond margins, interdunal flats, borrow pits, and old forest trails; thriving on exposure after lowering of water levels and seldom seen in times of high water. (The seeds are evidently dispersed or rejuvenated from seed banks by fluctuations in water level.)

A few specimens from the southern counties of the Lower Peninsula are var. anagallidea (Michx.) Cooperr., with slender pedicels exceeding the short, broad somewhat clasping subtending leaves. Plants with pedicels shorter than the leaves, which are ± tapered to their bases, represent var. dubia. The two have sometimes been regarded as distinct species, but intermediates seem numerous.

Locations

Alger County
Allegan County
Arenac County
Baraga County
Barry County
Bay County
Benzie County
Berrien County
Calhoun County
Cass County
Chippewa County
Delta County
Gogebic County
Gratiot County
Hillsdale County
Huron County
Ingham County
Ionia County
Jackson County
Kalamazoo County
Kent County
Lenawee County
Macomb County
Marquette County
Mecosta County
Midland County
Monroe County
Montcalm County
Muskegon County
Newaygo County
Oakland County
Ontonagon County
Roscommon County
Saginaw County
St. Clair County
St. Joseph County
Van Buren County
Washtenaw County
Wayne County

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 11, 2017. http://michiganflora.net/species.aspx?id=1638.