Perennial Threeawn

Plant Profile
FYUSE 3D Image	Common Name: Perennial Threeawn Other Names: Purple Threeawn, Blue Threeawn, Reverchon's Threeawn, Red Threeawn, Fendler's Threeawn, Wright's Threeawn Species Name: Aristida purpurea Plant Type: Grasses & Grass-like Family Name: Poaceae, Grass Family Tribe: Aristideae, Threeawn Tribe

Plant Facts
Origin	Native
Duration	Perennial
Season	Warm
Distribution in the U.S.	Throughout the Southwest from California, Mexico and eastward into Kansas and Arkansas
Distribution in Oklahoma	Throughout the state

ID Characteristics

Field Identification Characteristics
Vegetative
- Leaves curl slightly at tips
- Bunch grass
Floral
- Seed heads large with unequal awns
- Awns long and diverging
Leaf and Stem Characteristics
- Plant Height: 10-55 centimeters
- Ligule Type: Ciliate membrane
- Sheath: Glabrous
- Leaves: Basal and cauline
Floral Characteristics
- Inflorescence Type: Panicle
- Florets Per Spikelet: 1
- Glumes: Can be equal or unequal

Habitat/Ecology
Soil Type	Dry rocky, gravel
Habitat	Rocky, gravelly areas in forested regions
Successional Stage	Mid