| Carex haydeniana | |
|---|---|
| |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Clade: | Commelinids |
| Order: | Poales |
| Family: | Cyperaceae |
| Genus: | Carex |
| Subgenus: | Carex subg. Vignea |
| Section: | Carex sect. Ovales |
| Species: | C. haydeniana
|
| Binomial name | |
| Carex haydeniana | |
| Synonyms | |
|
Carex nubicola | |
Carex haydeniana is a species of sedge known by the common name cloud sedge.
It is native to western North America from British Columbia and Alberta south to California and New Mexico. It grows in moist, rocky areas in subalpine and alpine climates.