Panicum acuminatum var. thermale
Common Name: Geysers panicum
Family: Poaceae
Synonyms: Dichanthelium lanuginosum var. thermale, Panicum thermale
Element Code: PMPOA24028
Full Name: Panicum acuminatum Sw. var. thermale (Bol.) Wipff

Biology Glossary
  • Lifeform: annual / perennial herb
  • Blooming Period: June - August
  • Habitat: geothermally-altered soil, sometimes streamsides.
    • Closed-cone coniferous forest
    • Riparian forest
    • Valley and foothill grassland
Rarity Status Glossary
Occurrence Data from DFG
California Natural Diversity Database Glossary
  • Total # of Known Element Occurrences: 10
  • Element Occurrence Ranks:
    A B C D X U
    1 3 0 0 1 5
  • Population Status:
    >20 yrs
    <=20 yrs
    6 4
  • Presence:
    Present Extant Possibly Extirpated Extirpated
    9 1 0
Notes Glossary
  • 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, Madroño 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.
  • To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page.
  • Date Added: 1974-01-01
  • Last Update: 2012-09-12
Location Glossary
  • Elevation: 305 - 2470 meters
  • California Endemic: yes
  • States: California
  • California Counties and Islands:   name (code)
    Plumas (PLU),  Shasta (SHA),  Sonoma (SON)
  • Quads:   name (DWR code) USGS code
    Whispering Pines (533C) 38122G6,  The Geysers (534D) 38122G7,  Reading Peak (625B) 40121D4,  Lassen Peak (626A) 40121D5
  • Notes:
      Definitions of codes preceding a county and/or quad:
      * Presumed extirpated
      ? Uncertain about distribution or identity
      ?* Uncertain about distribution, but presumed extirpated if once present
      (?) Occurrence confirmed, but possibly extirpated
      Species may be present in other areas where conditions are favorable.
Presumed Extant Presumed Extirpated or Unknown 1215
Links to Leading Resources of Taxon Information
Suggested Citation
CNPS, Rare Plant Program. . Inventory of Rare and Endangered Plants (online edition, v8-02). California Native Plant Society, Sacramento, CA. Website [accessed ].

38122G6=Whispering Pines (533C) 38122G6;38122G7=The Geysers (534D) 38122G7;40121D4=Reading Peak (625B) 40121D4;40121D5=Lassen Peak (626A) 40121D5