Pycnocycla spinosa Pycnocycla prostrata Pycnocycla ledermannii Pycnocycla flabellifolia Pycnocycla nodiflora Pycnocycla aucherana Pycnocycla tomentosa Pycnocycla sheilae Pycnocycla saxatilis Pycnocycla musiformis Pycnocycla glauca Pycnocycla cespitosa Pycnocycla cephalantha Pycnocycla acanthorhipsis Pycnocycla bashagardiana
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024