Decodon verticillatus (L.) Elliot - Swamp Loosestrife


 

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Decodon verticillatus - (image 1 of 4)

 

Taxonomy

Family: Lythraceae

Habitat

Marshes, swamps, bogs.

Associates

 

Distribution

Nova Scotia and Quebec, west to MN, south to FL and LA, and in the Mississippi valley to IN and MO.

Morphology

Small shrub, woody below, with slender stems to 3 m, often arching and rooting at the tip. Leaves dark green, whorled to opposite, petiolate, lanceolate. Flowers axillary in dense cymes; petals 5, narrow, bright magenta-purple.

Notes

Flowers late July to September

Wetland Indicator: Obligate

The plants with glabrous pedicels and leaves, as shown here, are var. laevigatus and occur mostly inland as far south as eastern TN. A variety with pedicels and lower leaf surfaces tomentulose, var. verticillatus, occurs along the Atlantic coast.

References

Gleason, Henry A. and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. Second Ed.
The New York Botanical Garden. Bronx, NY

 

Swink, F. and G. Wilhelm. 1994. Plants of the Chicago Region.
Indiana Academy of Science. The Morton Arboretum. Lisle, Illinois.

 


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 Michael Hough © 2009