Ferocactus Britton & Rose (Cactaceae)

Ferocactus 1b Desert Botanical Garden, Phoenix, Arizona 130426 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Ferocactus 1c Desert Botanical Garden, Phoenix, Arizona 130426 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Ferocactus cylindraceus 3 S Borrego, Anza Borrego, CA 130421 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Ferocactus cylindraceus 4 S Borrego, Anza Borrego, CA 130421 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Ferocactus cylindraceus 5 S Borrego, Anza Borrego, CA 130421 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Ferocactus viridescens Torrey Pines, San Diego, CA 130418 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).


Ferocactus 1a Desert Botanical Garden, Phoenix, Arizona 130426 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Ferocactus cylindraceus 1 S Borrego, Anza Borrego, CA 130421 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).

Ferocactus cylindraceus 2 S Borrego, Anza Borrego, CA 130421 - Photo: Jan Thomas Johansson (© 2014 Jan Thomas Johansson).