![Ferocactus echidne, Amante Darmanin](https://i0.wp.com/opuntiads.com/oblog/wp-content/uploads/2015/01/f-echidne-ad13b-e1420235984936.jpg?resize=800%2C621&ssl=1)
Author: Joseph
![Ferocactus echidne, Amante Darmanin](https://i0.wp.com/opuntiads.com/oblog/wp-content/uploads/2015/01/f-echidne-ad13b-e1420235984936.jpg?resize=800%2C621&ssl=1)
![Puya raimondii, Peru](https://i0.wp.com/opuntiads.com/oblog/wp-content/uploads/2016/08/puya-raimondii.jpg?resize=980%2C478&ssl=1)
World’s Largest Pineapple Relative
![Cylindropuntia tunicata](https://i0.wp.com/opuntiads.com/oblog/wp-content/uploads/2016/09/cyl-tunicata-Frank-Vincentz3.jpg?resize=900%2C600&ssl=1)
Cylindropuntia tunicata
![Opuntia orbiculata, Aguirre Springs, NM](https://i0.wp.com/opuntiads.com/oblog/wp-content/uploads/2015/05/opuntia-orbiculata-bagdad-az-nancy.jpg?resize=980%2C758&ssl=1)
Opuntia Spines Vary Within a Species: A Case Study in Opuntia orbiculata
![](https://i0.wp.com/opuntiads.com/oblog/wp-content/uploads/2016/08/MG_3906.CR2-Along-Rio-de-las-Conchas.jpg?resize=980%2C511&ssl=1)
Along the Conchas River of Argentina
![Opuntia gilvescens](https://i0.wp.com/opuntiads.com/oblog/wp-content/uploads/2016/07/opuntia-gilvescens-nancy-hussey-may-2016b.jpg?resize=980%2C455&ssl=1)
Opuntia gilvescens
![Echinopsis pachanoi](https://i0.wp.com/opuntiads.com/oblog/wp-content/uploads/2016/07/echniopsis-pachanoi-Michael-Whitehead.jpg?resize=635%2C427&ssl=1)
Big White Cactus Flowers
![Yucca carnerosana, Sergio Niebla](https://i0.wp.com/opuntiads.com/oblog/wp-content/uploads/2016/07/Yuca-carnerosana-sergio-niebla.jpg?resize=980%2C483&ssl=1)
Large Yuccas
![Macroscelides proboscideus, Joachim Muller](https://i0.wp.com/opuntiads.com/oblog/wp-content/uploads/2014/12/Macroscelides-proboscideus-joachim-mullerb.jpg?resize=980%2C734&ssl=1)
Seeds Safe in the Desert Karoo?
![Ferocactus gracilis coloratus](https://i0.wp.com/opuntiads.com/oblog/wp-content/uploads/2016/07/ferocactus-gracilis-coloratus-christian-defferard.jpg?resize=980%2C542&ssl=1)
Baja California
![Opuntia engelmannii](https://i0.wp.com/opuntiads.com/oblog/wp-content/uploads/2016/07/Opuntia_engelmannii_flower-stan-shebs.jpg?resize=980%2C740&ssl=1)
Opuntia engelmannii
![Gymnocalycium quehlianum, Argentina](https://i0.wp.com/opuntiads.com/oblog/wp-content/uploads/2016/07/Gymnocalycium-quehlianum3.jpg?resize=980%2C437&ssl=1)