Alzarius

From Tardis Wiki, the free Doctor Who reference

Alzarius was the homeworld of Adric. Its coordinates from galactic centre are 1001100 by 02, identical to those of Gallifrey. However, it resided not in the universe containing Gallifrey but a smaller universe known as E-Space. A starliner from the planet Terradon crash landed an unspecified number of years before Adric's time.

Although the inhabitants of the liner at that time believed the crash to be 'four thousand generations' previously, given the peculiar effect of the starliner on the ecology of Alzarius this figure is at best highly speculative.

Alzarius was most notable for the highly unusual biology of its lifeforms. This manifested itself most obviously in the form of extremely rapid adaptive changes made by Alzarian animal life. If placed in an environment it finds stressful or otherwise uncomfortable, an Alzarian creature would rapidly develop whatever characteristics it required in order to render the environment less stressful, such as the ability to breathe in a different medium, or higher muscular density.

Connected to this is the ability was the ability to heal injuries at an accelerated rate (although this is less spectacular than the similar Time Lord ability to regenerate). The rate of healing slows as the individual ages.

Alzarian biology was also unusual in that the boundaries between animal and plant forms of life appear less rigidly defined: the eggs of the Alzarian spider were discovered developing within riverfruit, apparently as a normal part of the planet's life cycle. (DW: Full Circle)