Acanthocalycium Backeb. (5 images; © 2014 Jan Thomas Johansson)

Astrophytum Lem. (7 images; © 2014 Jan Thomas Johansson)

Bergerocactus Britton & Rose (3 images; © 2014 Jan Thomas Johansson)

Carnegiea Britton & Rose (12 images; © 2014 Jan Thomas Johansson)

Cereus Mill. (3 images; © 2014 Jan Thomas Johansson)

Cleistocactus Lem. (2 images; © 2014 Jan Thomas Johansson)

Coryphantha Lem. (3 images; © 2014 Jan Thomas Johansson)

Cylindropuntia (Engelm.) F.M.Knuth (67 images; © 2014 Jan Thomas Johansson)

Disocactus Lindl. (6 images; © 2014 Jan Thomas Johansson)

Echinocactus Link & Otto (6 images; © 2014 Jan Thomas Johansson)

Echinocereus Engelm. (30 images; © 2014 Jan Thomas Johansson)

Echinopsis Zucc. (26 images; © 2014 Jan Thomas Johansson)

Epiphyllum Haw. (1 images; © 2014 Jan Thomas Johansson)

Eriosyce Phil. (5 images; © 2014 Jan Thomas Johansson)

Ferocactus Britton & Rose (9 images; © 2014 Jan Thomas Johansson)

Gymnocalycium Pfeiff. ex Mittler (4 images; © 2014 Jan Thomas Johansson)

Hatiora Britton & Rose (3 images; © 2014 Jan Thomas Johansson)

Hylocereus Britton & Rose (5 images; © 2014 Jan Thomas Johansson)

Lepismium Pfeiff. (1 images; © 2014 Jan Thomas Johansson)

Maihuenia Phil. (3 images; © 2014 Jan Thomas Johansson)

Mammillaria Haw. (71 images; © 2014 Jan Thomas Johansson)

Melocactus Link & Otto (2 images; © 2014 Jan Thomas Johansson)

Opuntia Tourn. ex Mill. (60 images; © 2014 Jan Thomas Johansson)

Parodia Speg. (18 images; © 2014 Jan Thomas Johansson)

Pereskia Mill. (8 images; © 2014 Jan Thomas Johansson)

Pseudorhipsalis Britton & Rose (4 images; © 2014 Jan Thomas Johansson)

Rebutia K.Schum. (11 images; © 2014 Jan Thomas Johansson)

Rhipsalis Gaertn. (11 images; © 2014 Jan Thomas Johansson)

Schlumbergera Lem. (6 images; © 2014 Jan Thomas Johansson)

Selenicereus Britton & Rose (4 images; © 2014 Jan Thomas Johansson)

Stenocactus A.Berger (2 images; © 2014 Jan Thomas Johansson)

Stenocereus Riccob. (10 images; © 2014 Jan Thomas Johansson)

Thelocactus Britton & Rose (2 images; © 2014 Jan Thomas Johansson)

Weberbauerocereus Backeb. (4 images; © 2014 Jan Thomas Johansson)

Grusonia Hort.Nicolai. ex K.Schum. (1 images; © 2014 Jan Thomas Johansson)

Oreocereus Riccob. (4 images; © 2014 Jan Thomas Johansson)

Pachycereus Britton & Rose (2 images; © 2014 Jan Thomas Johansson)

Pilosocereus Byles & G.D.Rowley (2 images; © 2014 Jan Thomas Johansson)

Tephrocactus Lem. (2 images; © 2014 Jan Thomas Johansson)