Taxon Report

Poa napensis Beetle

Napa blue grass

Print Report

Classification


Scientific Name:	Poa napensis Beetle
Common Name:	Napa blue grass
Family:	Poaceae
Element Code:	PMPOA4Z1R0
USDA Plants Symbol:	PONA
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial herb
Blooming Period: May-Aug	May-Aug
Elevation:	100-200 (330-655)
General Habitats:	Meadows and seeps, Valley and foothill grassland
Microhabitat:	Alkaline
Microhabitat Details:	near thermal springs

Conservation Status


CA Rare Plant Rank:	1B.1
Global Rank:	G1
State Rank:	S1
State List:	CE
Fed List:	FE
Other Status:	SB_CalBG/RSABG
CRPR Changes:

Occurrence Data from the CNDDB


Total Occurrences:	2
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	2
Fair (C)	0
Poor (D)	0
None (X)	0
Unknown (U)	0

Location


California Endemic: True
California Counties and Islands: Name (Code)
Napa (NAP)
Quads: Name (Quad Code)
Calistoga (3812255)

Threat List Data from the CNDDB


Threat List Total:	7
EOs with Threat Listed:	Total EOs	% of EOs
	2	100 %
Development	2	100%
Foot traffic/trampling	2	100%
Grazing	1	50%
ORV activity	1	50%
Other	1	50%
Road/trail construction/maint.	1	50%
Surface water diversion	1	50%

Notes



Known from only two occurrences in the Calistoga area. Threatened by development, hydrological alterations, recreational activities, and airport maintenance. See Leaflets of Western Botany 4:289 (1946) for original description.
Threats:

Taxonomy:

Selected References

Citation California Native Plant Society, Rare Plant Program. 2024. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 29 December 2024].