Colin Mills, compiler of the Hortus Camdenensis, died in late November 2012 after a short illness. As he always considered the Hortus his legacy, it is his family's intention to keep the site running in perpetuity. It will not, however, be updated in the near future.


A family of up to 220 genera and 2000 species of succulent, usually spiny herbs and shrubs, sometimes climbing, from temperate and tropical regions of the Americas.  [FNSW].  A handful of species are of some economic importance for their fruit or other products.  Represented in the Hortus by nearly 30 ornamental species. At least one species was probably introduced to obtain Cochineal dye.

Plants in this Family

  1. Trichocereus chiloensis (Colla.) Britt. & Rose
  2. Selenicereus grandiflorus (L.) Britt. & Rose
  3. Schlumbergera truncata (Haw.) Moran
  4. Rhipsalis baccifera (J.S.Muell.) Stearn
  5. Pereskia aculeata Mill.
  6. Opuntia leucotricha DC.
  7. Opuntia cochinellifera (L.) Mill.
  8. Opuntia brasiliensis (Willd.) Haw.
  9. Nopalxochia phyllanthoides (DC.) Britt. & Rose
  10. Malacocarpus ottonis (Lehm.) Britton & Rose
  11. Hylocereus triangularis (L.) Britt. & Rose
  12. Hylocereus lemairei (Hook.) Britt. & Rose
  13. Heliocereus speciosus (Cav.) Britt. & Rose
  14. Hatiora salicornioides (Haw.) Britton & Rose
  15. Epiphyllum x jenkinsonii Hort.
  16. Epiphyllum phyllanthus (L.) Haw.
  17. Epiphyllum oxypetalum Haw.
  18. Epiphyllum ackermanii Haw.
  19. Echinopsis eyriesii (Turp.) Zucc. ex Pfeiff & Otto
  20. Disocactus x mallisonii (Otto & Dietr.) Barthlott
  21. Disocactus flagelliformis (L.) Barthlott
  22. Disocactus alatus (Sw.) Kimnach
  23. Cereus hexagonus (L.) Mill.
  24. Cereus ferox Haw.