Diodia virginiana

Diodia virginiana is a plant species in the Rubiaceae, common name Virginia buttonweed. It is a spreading, matted perennial with opposite leaves, often mottled because of a virus that attacks the foliage. Flowers are white, cross-shaped with 4 petals. Fruits are green, often floating on water. The species can become a nuisance weed, hard to eradicate because of underground parts that remain behind when you try to pull up the plant.[1]

Virginia buttonweed
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Gentianales
Family: Rubiaceae
Genus: Diodia
Species:
D. virginiana
Binomial name
Diodia virginiana
L.

Diodia virginiana is native to Cuba, Nicaragua, Mexico, Connecticut, and the south-central and southeastern United States. It is known from every state on the Gulf and Atlantic coasts from Texas to New Jersey as well as all the states in the Tennessee and Ohio River Valleys and the southern Great Plains.[2] The species is also naturalized in Japan, Taiwan and northern California.[3][4]

References
  1. "Turf Grass Science at the University of Tennessee, Virginia Buttonweed (Diodia virginiana)" (PDF). Archived from the original (PDF) on 2014-05-03. Retrieved 2014-05-03.
  2. USDA Plants Database
  3. Kew World Checklist of Selected Plant Families
  4. Biota of North America Program
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