California Danthonia, California Oatgrass, California Oat-grass, California Wild Oat-grass: Danthonia californica (Synonyms: Danthonia americana, Danthonia californica var. americana, Danthonia californica var. californica, Danthonia californica var. palousensis, Danthonia californica var. piperi)
Common Heath-grass, Mountain Heathgrass, Mountain Heath-grass: Danthonia decumbens (Synonyms: Festuca decumbens, Sieglingia decumbens)
Intermediate Oatgrass, Timber Oatgrass: Danthonia intermedia (Synonyms: Danthonia canadensis, Danthonia intermedia ssp. intermedia, Danthonia intermedia var. cusickii, Danthonia intermedia var. intermedia)
Poverty Oatgrass: Danthonia spicata (Synonyms: Danthonia spicta var. longipila, Danthonia spicata var. pinetorum, Danthonia thermale, Danthonia thermalis)
Few-flower Oatgrass, Few-flower Wild Oat-grass, Few-flowered Wild Oatgrass, Onespike Danthonia, One-spike Oatgrass: Danthonia unispicata