Opercubitaceae

Opercubitaceae is a family of ubiquitous Atarian plants known as the amienes. They are mostly small herbaceous plants that somewhat resemble Earth grasses and form a continuous ground covering, filling the same niche on Atar as grasses do on Earth. They are found everywhere on Atar, including plains, high mountain slopes, forests, deserts, tundra, and even underwater. Together the amienes cover more ground on Atar than all other plants combined, and support gigantic herds of grazing animals. Over 23,000 living amiene species in 476 genera have been discribed. Amienes appear in Atar's fossil record around 280 million years ago.