Conophytum Key

Dallwitz, M. J., Paine, T. A., and Zurcher, E. J. 1993 onwards. User’s guide to the DELTA System: a general system for processing taxonomic descriptions. 4th edition. http://delta-intkey.com

Dallwitz, M. J., Paine, T. A., and Zurcher, E. J. 1995 onwards. User’s guide to Intkey: a program for interactive identification and information retrieval. http://delta-intkey.co

Hammer, S. 2002. Dumpling and his wife; new views of the genus Conophytum. EAE Creative Colour Limited

Spooner, A., Chapman, A. 2013. DELTA Intkey Tutorial: User's guide Version 1.0.1. Western Australian Herbarium. https://florabase.dpaw.wa.gov.au/help/keys/intkey_tutorial.pdf