Koenig divided the tumors into scirrhous, steatomatous, fungoid and medullary forms. The odor is somewhat pleasantly fungoid. The story also introduces the Mi-go, an extraterrestrial race of fungoid creatures. Odor and taste usually indistinctive, mild, fungoid, sweet, or rancid. On the past Earth, Helena's condition is much improved due to the fungoid mixture. Species include the Malabar gliding frog, Asian toad, fungoid frog, and bicolored frog.