Invasive annual grasses are a threat to the Great Basin desert ecosystem. They compromise habitat diversity for important wildlife species such as the greater sage-grouse. They shorten the grazing season for livestock, and do not provide as much consistent forage biomass and quality as perennial native bunchgrasses. This publication describes how to spot three of these invasive grasses (downy brome, medusahead, and ventanata dubia) and provides information on control methods and grazing suitability. This publication can be downloaded in two different formats. The "PDF" button provides a standard, letter-sized document with five pages. The supplemental file is designed as an eight-page booklet that can be printed on a standard, letter-size sheet of paper. This version should be printed on both sides of one sheet of paper (flip on long edge) in landscape format and folded in half.