![Aloe menyharthii growing on coral, Ton Rulkens](https://i0.wp.com/opuntiads.com/oblog/wp-content/uploads/2015/11/Aloe-menyharthii-ton-rulkens2.jpg?resize=980%2C805&ssl=1)
Author: Joseph
![Aloe menyharthii growing on coral, Ton Rulkens](https://i0.wp.com/opuntiads.com/oblog/wp-content/uploads/2015/11/Aloe-menyharthii-ton-rulkens2.jpg?resize=980%2C805&ssl=1)
![Gymoncalycium mihanovichii flower](https://i0.wp.com/opuntiads.com/oblog/wp-content/uploads/2014/12/gymoncalycium-mihanovichii-mike-keeling.jpg?resize=980%2C894&ssl=1)
Cactus Flowers Have Tepals
![Echinocactus platyacanthus, Amante Darmanin](https://i0.wp.com/opuntiads.com/oblog/wp-content/uploads/2014/12/echinocactus-platyacanthus-amandar5.jpg?resize=867%2C521&ssl=1)
Candy Barrel Cactus Under Protection
![Namaqualand flowers, Malcolm Manners](https://i0.wp.com/opuntiads.com/oblog/wp-content/uploads/2015/11/namaqualand-Malcolm-Manners.jpg?resize=980%2C823&ssl=1)
Namaqualand Desert
![Hechtia sp, Querétaro, MX](https://i0.wp.com/opuntiads.com/oblog/wp-content/uploads/2015/02/hechtia-sp-amante-darmanin9.jpg.png?resize=980%2C758&ssl=1)
Plants of Querétaro, Mexico
![Cactobalstis cactorum egg case, John Tann](https://i0.wp.com/opuntiads.com/oblog/wp-content/uploads/2015/10/cactoblastis-egg-case-john-tann.jpg?resize=980%2C569&ssl=1)
Indestructible Cacti?
![Sempervium hybrid, Pnay Gem](https://i0.wp.com/opuntiads.com/oblog/wp-content/uploads/2015/10/sempervivum-hybrid-pnay_gem.jpg?resize=980%2C683&ssl=1)
Sempervivums
![Browningia candelaris, Pato Novoa](https://i0.wp.com/opuntiads.com/oblog/wp-content/uploads/2015/10/browningia-candelaris-ssp-pato-novoa.jpg?resize=980%2C768&ssl=1)
Browningia candelaris
![Crinum lineare, biodiversityexplorer](https://i0.wp.com/opuntiads.com/oblog/wp-content/uploads/2015/10/crinum-lineare-biodiversityexplorer.org_1.jpg?resize=725%2C606&ssl=1)
Are Crinums True Succulents?
![Cactus seedlings, sacredcactus.com](https://i0.wp.com/opuntiads.com/oblog/wp-content/uploads/2015/10/cactus-seedlings.jpg?resize=798%2C688&ssl=1)
Seed Vendors
![Britton and Rose, plate XVII](https://i0.wp.com/opuntiads.com/oblog/wp-content/uploads/2015/10/plate-xviib.jpg?resize=821%2C622&ssl=1)
Mary Emily Eaton Illustrations
![Agave victoriae-reginae, Amante Darmanin](https://i0.wp.com/opuntiads.com/oblog/wp-content/uploads/2015/10/Agave-victoriae-reginae-darmanin.jpg?resize=980%2C768&ssl=1)