What is the biome for a aloe plant?

This is from wikipedia:

Aloe, also written Aloë, is a genus containing about four hundred species of flowering succulent plants.

The most common and well known of these is Aloe vera, or "true aloe".

The genus is native to Africa, and is common in South Africa's Cape Province, the mountains of tropical Africa, and neighboring areas such as Madagascar, the Arabian peninsula, and the islands of Africa.