Conophytum tantillum subsp. tantillum Conophytum tantillum subsp. tantillum sec. Hammer & A.J.Young 20171 wfo-00014352581. Hammer, S. A. & A.J.Young 2017: Conophytum - Ruschioideae. – In: Hartmann, H. E. K., Illustrated handbook of succulent plants. Aizoaceae, ed. 2. – Berlin: SpringerContent