Perfoliate Tinker’s Weed, Fever Root, Wild Coffee, Feverwort, Common Horse Gentian, Late Horse Genetian
Synonyms of Triosteum perfoliatum: Karpaton hastatum Raf., Triosteum connatum Raf., Triosteum majus Michx., Triosteum obovatum Raf.
Triosteum perfoliatum L. is the correct and accepted scientific name or this species. The genus and species were named and described as such by Carl von Linnaeus in the first volume of the first edition of Species Plantarum in 1753.
Plants of the World Online lists six accepted species in the Triosteum genus (as of 5-18-20 when I am updating this page) It is a member of the Caprifoliaceae Family with a total of 28 genera. Those numbers could change periodically as updates are made.
The above distribution map for Triosteum perfoliatum is from the USDA Plants Database. The map on Plants of the World Online doesn’t show near the range but maybe it will when updates are made. The species is a North American native and has not been introduced in other countries (as far as the maps show).
There are several links at the bottom of the page for further reading and to help with a better positive ID.
I found this neat species growing in the woods on a friend’s while wildflower hunting on May 10 (2020). I didn’t know what it was so I took LOTS of photos so I could make a positive ID. Later on, I uploaded the photos on iNaturalist and found out it was Triosteum perfoliatum. Common names include Perfoliate Tinker’s Weed, Fever Root, Wild Coffee, Feverwort.
I have many wildflower pages to add and I am getting behind. So, I decided to add the pages and come back later and write descriptions. The links below will help you with a positive ID. Be sure to try iNaturalist. Sign up, upload, and submit your observations.
I have enjoyed photographing and learning about the many wildflowers growing on the farm and other areas. My farm is in Windsor, Missouri in Pettis County (Henry County is across the street and Benton and Johnson aren’t far away). 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 email@example.com. 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. 🙂