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Diodia virginiana - Virginia Buttonweed.jpg
Diodia virginiana
Scientific classification e
Kingdom: Plantae
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Gentianales
Family: Rubiaceae
Subfamily: Rubioideae
Tribe: Spermacoceae
Genus: Diodia
Type species
Diodia virginiana

Diodia (or buttonweed) is a genus of flowering plants in the Rubiaceae family. It was described by Carl Linnaeus in 1753. The genus is found from southern and eastern United States, South America, Central America, Mexico, the West Indies and tropical Africa.[2][3]

Other Buttonweeds[edit]

Many species of Diodia have been transferred to a closely related genus Diodella, and therefore the name Buttonweed also applies to these species. There are also many species of False Buttonweeds in the related genus Spermacoce. The Velvetleaf Abutilon (Abutilon theophrasti) in the family Malvaceae is also known by the common name of Buttonweed.



  1. ^ Kew World Checklist of Selected Plant Families
  2. ^ "Diodia in the World Checklist of Rubiaceae". Retrieved June 2012. Check date values in: |accessdate= (help)
  3. ^ USDA Plants Database

External links[edit]