Stachytarpheta irwinii Stachytarpheta lacunosa var. attenuata Stachytarpheta lacunosa var. cordifolia Stachytarpheta lacunosa var. ovatifolia Valerianoides reticulatum Stachytarpheta rupestris
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024