Tuberous vervain
- kingdom: Plantae
- phylum: Tracheophyta
- class: Magnoliopsida
- order: Lamiales
- family: Verbenaceae
- genus: Verbena
- species: Verbena rigida
Yapeyú
Corrientes
Argentina
Mulgoa
New South Wales
Australia
Rumst
Flanders
Belgium
Viçosa
Minas Gerais
Porto Alegre
Taquara
Rio Grande do Sul
Paty do Alferes
Teresópolis
Rio de Janeiro
Brazil
Antiguo Cuscatlán
Nuevo Cuscatlán
La Libertad
El Salvador- United Kingdom
Dauphin Island
Mobile
Alabama
Denver
Colorado
Macon
Mississippi
Pinehurst
Texas
Washington, D. C.
Washington, D.C.
United States
Kallinge
Barbican