Global InformationCalamagrostis tweedyi information
| Calamagrostis tweedyi | |
|---|---|
| |
| Calamagrostis tweedyi from American Grasses, Scribner 1897 | |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Clade: | Commelinids |
| Order: | Poales |
| Family: | Poaceae |
| Subfamily: | Pooideae |
| Genus: | Calamagrostis |
| Species: | C. tweedyi
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| Binomial name | |
| Calamagrostis tweedyi (Scribn.) Scribn.
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Calamagrostis tweedyi, the Cascade reedgrass or Tweedy's reedgrass, is a perennial in the grass family. It is native to the Pacific Northwest in the United States, in Washington, Oregon, Idaho, and Montana.