Mimulus ringens

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Asterids
Cladus: Lamiids
Ordo: Lamiales

Familia: Phrymaceae
Genus: Mimulus
Species: Mimulus ringens
Varieties: M. r. var. colpophilus – M. r. var. ringens
Name

Mimulus ringens L.
References

Linnaeus, C. 1753. Species Plantarum. Tomus II: 634. Reference page.
USDA, ARS, Germplasm Resources Information Network. Mimulus ringens in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 07-Oct-06.

Vernacular names
English: Allegheny monkeyflower, square-stemmed monkeyflower

Mimulus ringens is a species of monkeyflower known by the common names Allegheny monkeyflower and square-stemmed monkeyflower.

It is native to eastern and central North America, and there are occurrences in the western United States, some of which may represent introductions. It grows in a wide variety of wet habitat types. Seeds are available from commercial suppliers.

This is rhizomatous perennial growing 20 centimeters to well over a meter tall, its 4-angled stem usually erect. The oppositely arranged leaves are lance-shaped to oblong, up to 8 centimeters long, and sometimes joined or nearly so clasping the stem. The herbage is hairless. The flower 2 to 3 centimeters long, its tubular base encapsulated in a ribbed calyx of sepals with pointed lobes. The flower is lavender in color and divided into an upper lip and a larger, swollen lower lip.

One variety of this plant, var. colophilus, is rare, ecologically restricted, and vulnerable. It is known from Quebec, it has been reported in Vermont, and there are a few occurrences in Maine, where it grows only in freshwater sections of tidal estuaries.[1] This plant variety faces several threats, but its current status is not known due to a lack of data.[1]
References

Center for Plant Conservation: var. colophilus