Mimulus ringens (L.) var. colpophilus Fern.
Habitat: Freshwater tidal shores, meadows, wet places [Tidal wetland (non-forested wetland)]
Range: St. Lawrence River estuaries south to Maine.
Aids to Identification: Estuary monkey-flower is very similar to the more common monkey-flower that is found wet woods, shores, and swamps. Estuary monkey-flower also has blue or sometimes white flowers but has much smaller leaves (2.5- 5.0 cm long) than the common monkey-flower and is found in tidal areas.
Ecological characteristics: Found specifically in freshwater tidal wetlands.
Phenology: Flowering late June to September.
Family: Phyrmaceae (formerly in Veronicaceae)
Synonyms: None noted.
Known Distribution in Maine: This rare plant has been documented from a total of 13 towns in the following counties: Kennebec, Lincoln, Penobscot, Sagadahoc, Waldo, Washington.
Dates of documented observations are: 1896, 1916, 1935 (2), 1936, 1984, 1985, 1986, 1987, 1990 (7), 1991 (2), 1996, 1997, 1999, 2001
Reason(s) for rarity: Habitat is scarce in Maine.
Conservation considerations: Alteration of hydrology to tidal areas could prove detrimental to populations.