Species Details

Panicum acuminatum var. thermale

Geysers panicum

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Photo by © Rick York and CNPS  max-height:128px; max-width:145px;
© Rick York and CNPS
CA Rare Plant Rank: 1B.2
Fed List: None
State List: CE (1978-09-01)
Global Rank: G5T2Q
State Rank:
S2
Other Status:
CRPR Changes:
changed from 1B.1 to 1B.2 on 2012-09-12
Add Date: 1974-01-01
Date Edited: 2022-06-08
Lifeform: annual/perennial herb
Blooming Period: Jun-Aug
Elevation:
305 - 2470 meters
1000 - 8105 feet
General Habitat:
  • Closed-cone coniferous forest
  • Riparian forest
  • Valley and foothill grassland
General Micro Habitat: geothermally-altered soil
Micro Habitat:
  • Streambanks (sometimes)
Notes:
Known only from The Geysers and Lassen Volcanic NP geothermal areas. Does plant occur on Mt. Shasta (SIS Co.)? Plants from Blaney Meadows (FRE Co.) need verification. Threatened by non-native plants. A synonym of Panicum acuminatum var. acuminatum in TJM (1993). See Proceedings of the California Academy of Sciences 2:181 (1862) for original description, MadroƱo 23(3):151 (1975) for taxonomic treatment, and Proceedings of the CNPS Conservation Conference, pp. 256-263 (2009) for information on population dynamics and monitoring.
Threats:
Taxonomy:
Other:
Total Occurrences: 11
Element Occurrence Ranks:
A B C D X U
1 3 0 0 1 6
Occurrence Status:
Historical >20 Years 7
Recent <=20 Years 4
Presence:
Presumed Extant 10
Possibly Extirpated 1
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Lake (LAK), Plumas (PLU), Shasta (SHA), Sonoma (SON), Tehama (TEH)
Quads: Name (Quad Code)
Lassen Peak (4012145), Reading Peak (4012144), The Geysers (3812277), Whispering Pines (3812276)
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