Antos IV

From Memory Alpha, the free Star Trek reference.

Antos IV, in the Antos system, is the homeworld to a benevolent and peaceful people who cared for Captain Garth of Izar after he suffered an accident. During the 2260s, they taught Garth the art of cellular metamorphosis. (TOS: "Whom Gods Destroy")

Antos IV was also the home of a species of energy-generating dryworms. (TOS: "Who Mourns for Adonais?")

According to a non-canon source, The Worlds of the Federation, the star that Antos IV orbits is named Antos, and the Antosians refer to their world as Dorafane.