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Poa napensis
Conservation status
Endangered (ESA)
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Monocots
Clade:	Commelinids
Order:	Poales
Family:	Poaceae
Subfamily:	Pooideae
Genus:	Poa
Species:	P. napensis
Binomial name
Poa napensis Beetle

Poa napensis is a rare species of grass known by the common name Napa bluegrass. It is endemic to Napa County, California, where it is known from only two occurrences near Calistoga. It grows in moist, mineral-rich soil around hot springs. The rare grass only occurs on private, unprotected land and depends on water from the hot springs; changes to the local water regime or any other aspects of its specific habitat type would affect the plant. This grass was federally listed as an endangered species in 1997, along with another rare local hot spring endemic, the Calistoga popcornflower (Plagiobothrys strictus).

This is a perennial grass forming dense clumps of somewhat waxy stems up to about a meter in maximum height. The inflorescence is an open array of thin branches bearing rough-haired, flattened, lance-shaped spikelets. The spikelets may be greenish to purple in color.

References

1. ^ USFWS. Determination of endangered status for nine plants from the grasslands or mesic areas of the Central Coast of California. Federal Register October 22, 1997.

External links

• Jepson Manual Treatment
• Grass Manual Treatment

• v
• t
• e

• ESA endangered species
• Poa
• Native grasses of California
• Endemic flora of California
• Endemic flora of the San Francisco Bay Area
• Natural history of Napa County, California
• Pooideae stubs