Elmo is a Garden World in Monoceros, 1071 light years from Sol, and is affiliated to the Orion Federation. It has a very Earth-like biosphere, though it is significantly drier than Earth. The atmosphere has 18% oxygen and a pressure of 1500 millibars.
Elmo is home to the Cookie Fiends and to Pythagoras trees. Pythagoras trees have silicon-reinforced trunks and very simple geometric branching patterns, which vary slightly from species to species.