What is the definition of Kalaharituber?

Ah, the Kalaharituber - a plant so bizarre it's like nature's ultimate joke act! Imagine a desert dweller, a succulent with the ability to survive in conditions that'd make your survival skills look like they're from a bad sci-fi movie. It's basically a desert chameleon, but instead of changing colors to blend in, it changes into a rock. It's like nature's own, "I'm not here to mess things up, just to exist quietly."

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Now, here's an unsettling example sentence using this peculiar plant: "As I trudged through the Kalaharituber-strewn wasteland, my trusty sidekick, a sentient rock, whispered, 'I've been here longer than you've been alive.'"