Echinocereus rigidissimus f. crested

Also called "Rainbow cactus", because with the prolonged exposure to the direct sun, it takes on shades, ranging from pink to red or purple. It is a cactus with a crested shape, which makes each specimen unique in its kind and therefore highly sought after by green collectors. It has a green stem with tubercles, from which combed and rigid spines emerge, hence the name 'rigidissimus'. It is a cactus that is difficult to cultivate and for this reason it is often found grafted onto other plants.