What are facts about the crimson hedgehog cactus?

The Crimson Hedgehog Cactus stems are closely packed together, it can keep warm in very cold weather and this also reduces surface area through which it can lose heat.

It plant grows in deserts.

It has spines.

It grows in clumps.

The clumps have a few to a hundred stems. The stems of this cactus are shorter and more tightly packed together than other hedgehog cacti.

They use the cool night temperatures to exchange oxygen and carbon dioxide. During the day they do their photosynthesis, but they keep their stomata closed so they won't lose any moisture.