[Grasses of the Columbia River Gorge of Oregon and Washington]

Needlegrass and Ricegrass of the Columbia River Gorge of Oregon and Washington

The Genus Achnatherum

Indian Ricegrass: Achnatherum hymenoides (Synonyms: Oryzopsis cuspidata, Oryzopsis hymenoides)

Indian ricegrass as seen in sandy soils along the Hardstone Trail, Cottonwood Canyon State Park..........October 23, 2019.

Indian Ricegrass, Indian Rice Grass: Achnatherum hymenoides (Synonyms: Eriocoma cuspidata, Eriocoma hymenoides, Oryzopsis cuspidata, Oryzopsis hymenoides, Stipa hymenoides) -

Lemmon's Needlegrass: Achnatherum lemmonii ssp. lemmonii (Synonyms: Achnatherum lemmoni var. lemmonii, Eriocoma lemmonii ssp. lemmonii, Stipa columbiana, Stipa columbiana var. columbiana, Stipa lemmonii var. jonesii, Stipa lemmonii var. lemmonii) -

Pubescent Lemmon's Needlegrass, Pubescent Needlegrass: Achnatherum lemmonii ssp. pubescens (Synonyms: Achnatherum lemmonii var. pubescens, Stipa lemmonii var. pubescens) -

Nelson's Needlegrass: Achnatherum nelsonii ssp. dorei (Synonyms: Eriocoma nelsonii ssp. dorei, Stipa nelsonii ssp. dorei, Stipa nelsonii var. dorei) -

Common Western Needlegrass, Western Needlegrass: Achnatherum occidentale ssp. pubescens (Synonyms: Eriocoma occidentalis ssp. pubescens, Stipa elmeri, Stipa occidentalis var. pubescens) -

Thurber's Needlegrass, Thurber's Rice Grass: Achnatherum thurberianum (Synoyms: Eriocoma thurberiana, Stipa thurberiana) -

Needle-and-thread, Needle and Thread: Hesperostipa comata ssp. comata (Synonyms: Hesperostipa comata var. comata, Stipa comata, Stipa comata ssp. intonsa, Stipa comata var. comata, Stipa comata var. intosa) -

Paul Slichter E-mail