cylindricfruit primrose-willow
Ludwigia glandulosa Walter

Ludwigia glandulosa, known as the cylindricfruit primrose-willow, is an amphibious plant native to the southeastern United States. It can thrive both partially and fully submerged in water. This species requires carbon dioxide for optimal growth and exhibits a greener leaf color when exposed to low light conditions.
Description
Ludwigia glandulosa, described by Walter in 1788, is a member of the Onagraceae family. It is commonly found in the southeastern United States, with a distribution that includes Alabama, Arkansas, Florida, Georgia, Illinois, Indiana, Japan, Kentucky, Louisiana, Maryland, Mississippi, Missouri, North Carolina, Oklahoma, South Carolina, Tennessee, Texas, and Virginia. The plant is characterized by its slow growth and dependence on carbon dioxide for development. Its leaves may appear greener under low-light conditions. This species is also known by the common name small-flowered seedbox.
Other common names
cylindricfruit primrose-willow
Distribution
Alabama · Arkansas · Florida · Georgia · Illinois · Indiana · Japan · Kentucky · Louisiana · Maryland · Mississippi · Missouri · North Carolina · Oklahoma · South Carolina · Tennessee · Texas · Virginia
Synonyms
Ludwigia glandulosa var. typica