Verbena halei f. parviflora Verbena officinalis var. gaudichaudii Verbena leucanthemifolia Verbena officinalis f. roseiflora Verbena gaudichaudii Verbena officinalis var. halei Verbena halei f. albiflora Verbena halei f. roseiflora Verbena officinalis subsp. halei Verbena officinalis var. hirsuta
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024