[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 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