buttonweed
- kingdom: Plantae
- phylum: Tracheophyta
- class: Magnoliopsida
- order: Gentianales
- family: Rubiaceae
- genus: Diodia
- species: Diodia teres
Horseshoe Bend
ArkansasBremen
IndianaBaldwin City
Columbus
Emporia
Hutchinson
KansasCollege Station
Texas
United States