Seedbox, Bushy Seedbox, Bushy Waterprimrose
Synonyms of Ludwigia alternifolia: Isnardia alternifolia (L.) DC., Isnardia alternifolia var. salicifolia (Poir.) DC., Isnardia alternifolia var. uniflora (Raf.) DC., Isnardia aurantiaca DC., Ludwigia alternifolia var. linearifolia Britton, Ludwigia alternifolia var. pubescens E.J.Palmer & Steyerm., Ludwigia angustifolia var. ramosissima (Walter) Poir., Ludwigia aurantiaca Raf., Ludwigia macrocarpa Michx., Ludwigia pruinosa Raf., Ludwigia ramosissima Walter, Ludwigia salicifolia Poir.
Ludwigia alternifolia L. is the correct and accepted scientific name for this species of Ludwigia. The genus and species were described as such by Carl von Linnaeus on the first volume of the first edition of species Plantarum in 1753.
Plants of the World Online lists 85 species in the Ludwigia genus (as of 5-19-20 when I am updating this page). It is a member of the Onagraceae Family with a total of 21 genera. Those numbers could change periodically as updates are made.
The distribution map for Ludwigia alternifolia is from the USDA Plants Database.
There are several links at the bottom of the page for further reading and to help with a better positive ID.
I found this good-sized colony of Ludwigia alternifolia in the back of the farm by the pond on September 1, 2019.
I have a lot of wildflower pages to add to this site so I thought I would add photos then come back later and fill in with ID information. Until then, there are several links at the bottom of the page that can help. You might want to try iNaturalist. You can sign up, upload your photos, set your location and then the site will give you suggestions. You can then submit your observations and become part of the iNaturalist community.
I have enjoyed photographing and learning about the many wildflowers growing on the farm and other areas. I have grown over 500 different plants and most have pages listed on the right side of the blog. I am not an expert, botanist, or horticulturalist. I just like growing, photographing and writing about my experience. I rely on several websites for ID and a horticulturalist I contact if I cannot figure them out. Wildflowers can be somewhat variable from location to location, so sometimes it gets a bit confusing. If you see I have made an error, please let me know so I can correct what I have written.
I hope you found this page useful and be sure to check the links below for more information. They were written by experts and provide much more information. Some sites may not be up-to-date but they are always a work in progress. If you can, I would appreciate it if you would click on the “Like” below and leave a comment. It helps us bloggers stay motivated. You can also send an email to me at firstname.lastname@example.org. I would enjoy hearing from you especially if you notice something is a bit whacky.
NOTE: Plants of the World Online is the most up-to-date database. It is very hard for some to keep with name changes these days so you may find a few discrepancies between the websites. Just be patient. Hopefully, someday they will be in harmony. 🙂