Achnatherum hymenoides

Indian ricegrass

Previous scientific name(s):Eriocoma cuspidate : Oryzopsis hymenoides : Stipa hymenoides

Also known as Oryzopsis hymenoides. Densely tufted, cool season, very drought tolerant, perennial bunchgrass adapted to deep, well-drained soils. Forage is highly palatable and nutritious to livestock and wildlife. Seeds are sought by birds and small mammals. Sometimes occurs as dominant species throughout its range. Excellent for rangeland improvement and land reclamation.

map
img
img
img
img
img

Varieties

Nezpar Nezpar was selected for release over 125 other accessions. It demonstrated consistently good establishment and desirable vegetative characteristics. Nezpar outperforms Paloma in the northern U.S. in yield and stand survival. (Released 1978, source of ecotype: Whitebird, ID)
Release Notice

Paloma Paloma was the first strain of Indian ricegrass named and released as an improved variety. Produces excellent palatable forage and generally grows 12 to 24 inches tall. Often used in range seedings for reclamation mixtures in the southern half of the species range. (Released 1974, source of ecotype: Pueblo, CO)
Release Notice

Rimrock Very cold hardy and better adapted to northern latitudes than Nezpar. Prodigious seed producer. Similar in establishment and vegetation characteristics to Nezpar and Paloma. (Released 1996, source of ecotype: Billings, MT)
Release Notice


Variety Nezpar Paloma Rimrock
Group Monocot Monocot Monocot
US Native Native Native Native
Life Form Perennial Perennial Perennial
Plant Type Graminoid Graminoid Graminoid
Active Growth Period Spring Summer Fall Spring Summer Fall Spring Summer Fall
Bloom Season Late Spring Late Spring Late Spring
Mature Height (feet) 2 2 2
Flower Color Yellow Yellow Yellow
Foliage Color Green Green Green
Fertility Needs Low Low Low
Toxicity None None None
Fine Soil (adapted) No No No
Medium Soil (adapted) Yes Yes Yes
Coarse Soil (adapted) Yes Yes Yes
Salinity Tolerance Low Low Low
Shade Tolerance Intolerant Intolerant Intolerant
Moisture Requirements Low Low Low
Fire Resistant No No No
Fire Tolerance High High High
Seed Period Start Spring Spring Spring
Seed Period End Summer Summer Summer
Seed / lb 161920 161920 161920
Seedling Vigor High High High
Palatable (browser) High High High
Palatable (grazer) High High High