Stachys erioleuca Stachys latifolia Stachys numidica Stachys pallida Stachys velutina Stachys circinata subsp. zaiana Stachys circinata subsp. numidica Stachys circinata f. hozmariensis
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024