To make a kind of alien jungle in the desertic biome, it is necessary to create alien vegetals. Here are some ideas I put on paper. Well on screen actually. Well obviously not directly on the screen but ... well ... here is a concept.

Let me introduce, from top to bottom, the Agavea, the Globulea and the Pachycereus (which Crounchan calls tirelessly the pachydermus...Disbeliever.)