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Pacific hairgrass
Scientific Name: Deschampsia holciformis
Family: Poaceae
Category: Monocot
Growth: Graminoid
Duration: Perennial
Other Names:
Pacific Hairgrass (Deschampsia cespitosa subsp. holciformis)
Pacific Hairgrass, scientifically known as Deschampsia cespitosa subsp. holciformis, is a beautiful tufted bunchgrass native to the Pacific Northwest. It's appreciated for its fine-textured, green foliage and is considered an elegant ornamental grass in gardens.
Taxonomy and Nomenclature
- Scientific Name: Deschampsia cespitosa subsp. holciformis (J. Presl) W.E. Lawr.
- Common Names: Pacific Hairgrass, Pacific Tufted Hair-grass, Tufted Hairgrass, Pacific reed grass
- Genus: Deschampsia
- Species: cespitosa
- Subspecies: holciformis
- Family: Poaceae (Grass family)
- Synonyms: Deschampsia holciformis J. Presl, Deschampsia caespitosa ssp holciformis
Distribution and Habitat
- Native to the Pacific Northwest, ranging from British Columbia to Monterey Bay.
- Common in the Pacific coast states.
- Found in wet and intermittently flooded areas such as tidal mudflats and estuaries.
- Typically grows on moist sites between 5,000 and 13,000 ft, but can also occur on drier sites at its upper limit.
Morphological Characteristics and Growth Habits
- Cool season, leafy, densely tufted perennial bunch grass.
- Tussock-forming grass.
- Grows 1 to 2 feet tall and 1 foot wide.
Ecological Role
- In the Pacific Northwest, tufted hairgrass can form pure stands in wet areas.
Further Information
- NatureServe: Globally vulnerable (G3G4) status.
- Discover Life: Biology, natural history, ecology, identification and distribution information.