Cactus divaricatus Cereus divaricatus Cereus divergens Cereus nashii Harrisia divaricata Harrisia serruliflorus Harrisia nashii Harrisia nashii var. straminea Harrisia serruliflora Serrulatocereus serruliflorus Pilocereus divaricatus Cereus serruliflorus
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024