A tufted perennial grass with erect stems and narrow leaves, Piptochaetium fimbriatum, found in piñon and juniper woodland in northern Mexico and the south-western United States.
Origin
1930s.
Definition of pinyon ricegrass in US English:
pinyon ricegrass
noun
A tufted perennial grass with erect stems and narrow leaves, Piptochaetium fimbriatum, found in piñon and juniper woodland in northern Mexico and the south-western United States.