Phyla cuneifolia... www.wildflower.org

Verbena L. | Plants of the... powo.science.kew.org

Verbena - Wikipedia en.wikipedia.org

plants | Indian Creek Ranch... indian-creek-ranch.org

Verbena L. | Plants of the... powo.science.kew.org

purpletop vervain (Verbena... www.inaturalist.org

Colorado Wildflowers -... cowildflowers.com

Phyla Cuneifolia --... earthpedia.earth.com

Verbena - Wikipedia en.wikipedia.org

Verbena L. | Plants of the... powo.science.kew.org

Verbena - Wikispecies species.wikipedia.org

Phyla cuneifolia |... wildflowersearch.org

PlantFiles: The Largest... davesgarden.com

Verbena L. | Plants of the... powo.science.kew.org

Phyla cuneifolia (Torr.)... luirig.altervista.org

USDA Plants Database plants.usda.gov

Glandularia hatschbachii.... www.researchgate.net

Draba cuneifolia (Wedgeleaf... www.wildflower.org

World Plants: Plant List www.worldplants.de

HVAA - Verbena herbariovaa.org