Aloe (Aloe Vera).

Common name : Aloe (Aloe Vera).
Latin name : Aloe spp; esp. Aloe vera, syn. Aloe vulgaris/Aloe barbadensis
Family name : Xanthorrhoeaceae

The Aloe is fine to feed to tortoises in moderation, but if too much is fed it can have a slight laxative effect.  Aloe Vera gel can be rubbed on minor skin wounds to aid healing.
 
Although most Aloe Vera flowers are yellow, many of the hybrids have orange flowers.