Species Details

Poa napensis

Napa blue grass

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CA Rare Plant Rank: 1B.1
Fed List: FE (1997-10-22)
State List: CE (1979-07-01)
Global Rank: G1
State Rank:
S1
Other Status: SB_CalBG/RSABG
CRPR Changes:
Add Date: 1974-01-01
Date Edited: 2022-06-08
Lifeform: perennial herb
Blooming Period: May-Aug
Elevation:
100 - 200 meters
330 - 655 feet
General Habitat:
  • Meadows and seeps
  • Valley and foothill grassland
General Micro Habitat: near thermal springs
Micro Habitat:
  • Alkaline
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:
Other:
Total Occurrences: 2
Element Occurrence Ranks:
A B C D X U
0 2 0 0 0 0
Occurrence Status:
Historical >20 Years 0
Recent <=20 Years 2
Presence:
Presumed Extant 2
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Napa (NAP)
Quads: Name (Quad Code)
Calistoga (3812255)
Notes:
Definitions of codes following a county and/or quad:
* Presumed extirpated
(?) Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.

Map

Presumed Extant
Counties   Quads