Plianarerpi, or flamegrass, was a kind of grass native to Eniam. It had the properties of other grasses until it died and dried out. Upon death, a chemical reaction occurred that formed a kind of fuel inside it, and it soon dried of any dampening fluids. Dried flamegrass was extremely flammable, easy to light and burning hard. It was also light, easy to collect, and easy to carry.
Originally, plianarerpi was rare enough and weak enough to not pose a considerable threat to the planet. When the Eniamo discovered its use, they used simple fertilizers, genetic selection, and other farming techniques to form many large fields of a more combustible flamegrass. For safety reasons, the storage areas were walled, dug in, and watched carefully. They were often built near water sources for easy water collecting and to stop wildfires from going in that direction. Some of them were even surrounded by moats.
Plianarerpi aided the native species of Eniam greatly when they harnessed steam power. In the years soon after 1,138 BBY, advanced technology previously hidden underground by the Drijokenleein began to cover the savanna. Much machinery was steam powered, and plianarerpi was the most common source for the heat required. Also, plianarerpi could be mixed with burnt Qunmunol bark from the forests and sulfur from the caves to make gunpowder. This mixture was used in Eniam slugthrowers for centuries.
Plianarerpi burned with a pinkish-orange glow, a result of large potassium nitrate concentrations.