Malvil-trees were at least semi-sentient fungus trees native to the planet Xagobah. They had tendrils that they could move about and that could detect temperature and heat. Malvil-trees seemed to have a special symbiotic relationship with the Xamsters. A known member of this species was Malubi who, along with the Xamster Xeran, encountered Boba Fett on the planet during the Clone Wars.
The Techno Union was responsible for bioengineering the trees to create the Mazariyan Citadel.