Bouteloua parryi

Bouteloua parryi, colloquially known as Parry's grama, is a grass species in the grama genus native to the southwestern United States and northern Mexico.

Description
Parry's grama is annual grass that grows 20-60 cm tall, although sometimes to 80 cm. Flowers are born in inflorescences which consist of three to seven spicate branches per culm. They are blue-violet at maturity.

Taxonomy
Several varieties exist. B. parryi var. parryi is a stoloniferous perennial which has papillose hairs on its upper glumes. B. parryi var. gentryi differs in being a tufted annual.

Distribution
Parry's grama prefers rocky slopes or desert grasslands between 3000 ft and 5500 ft, although it can grow anywhere between sealevel and 2000 m. It is present in Texas, Arizona, New Mexico, and northern Mexico.