Plant toxins

As in terrestrial environments, plants are immobile. In desert environments, the soils can be particularly nutrient-poor and therefore plants need to retain as many nourishment as possible, while not being damaged by animals and environmental conditions. Often, plants will store highly toxic compounds to act as a deterrent against grazing. As members of the Deadly Nightshade family (Solanaceae), a number of Datura species are found in deserts and are extremely toxic with the potential to cause fatalities.

plant_toxins

Many species of Heliotropium are hepatotoxic.