''Ludwigia hexapetala'', the water primrose, is a

herbaceous Herbaceous plants are vascular plants that have no persistent woody stems above ground. This broad category of plants includes many perennials, and nearly all annuals and biennials. Definitions of "herb" and "herbaceous" The fourth edition of ...

perennial plant In horticulture, the term perennial (''wikt:per-#Prefix, per-'' + ''wikt:-ennial#Suffix, -ennial'', "through the year") is used to differentiate a plant from shorter-lived annual plant, annuals and biennial plant, biennials. It has thus been d ...

of the family

Onagraceae The Onagraceae are a family of flowering plants known as the willowherb family or evening primrose family. They include about 650 species of herbs, shrubs, and trees Latin America Latin America is the cultural region of the Americas where Romance languages are predominantly spoken, primarily Spanish language, Spanish and Portuguese language, Portuguese. Latin America is defined according to cultural identity, not geogr ...

. It occurs naturally in swampier regions, such as those of lakes, ponds, and other areas of low intensity/stagnant water. It grows in mats of up to three feet tall, and in doing so, it crowds and/or shades out the other, more native species. This species is invasive in the

Southeast United States The Southeastern United States, also known as the American Southeast or simply the Southeast, is a geographical region of the United States located in the eastern portion of the Southern United States and the southern portion of the Eastern Uni ...

Midwest United States The Midwestern United States (also referred to as the Midwest, the Heartland or the American Midwest) is one of the four census regions defined by the United States Census Bureau. It occupies the northern central part of the United States. It ...

Pacific Coast Pacific coast may be used to reference any coastline that borders the Pacific Ocean. Geography Americas North America Countries on the western side of North America have a Pacific coast as their western or south-western border. One of th ...

, and parts of

New England New England is a region consisting of six states in the Northeastern United States: Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont. It is bordered by the state of New York (state), New York to the west and by the ...

.https://plants.ces.ncsu.edu/plants/ludwigia-hexapetala/

References

External resources

*http://www.ecy.wa.gov/programs/wq/plants/plantid2/descriptions/ludhex.html *https://web.archive.org/web/20050814081017/http://www.nwcb.wa.gov/weed_info/Written_findings/Ludwigia_hexapetala.html *http://www.patentlens.net/daisy/AgroTran/g8/821.html *https://web.archive.org/web/20130603161101/http://www.fairchildgarden.org/uploads/docs/Education/Downloadable_teaching_modules/plant%20kingdom/monocot%20and%20dicot%20characteristics%20handout.pdf hexapetala {{Myrtales-stub