CNPS Inventory Plant Detail

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
USDA PLANTS Symbol:	DIACT2

Biology
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

Rare Plant Rank: 1B.2
Rare, threatened, or endangered in California and elsewhere
.2: Fairly endangered in California
Federal Listing Status:
Not Listed
State Listing Status: CE
Endangered (09/78)
State Rank: S2
S2: Imperiled.
Global Rank: G5T2Q
T2: Imperiled. G5: (species) Secure, considering populations outside California.
(There are taxonomic questions associated with this name)

Occurrence Data from DFG
California Natural Diversity Database

Total # of Known Element Occurrences: 9
Element Occurrence Ranks:

A B C D X U

1 3 0 0 1 4

Population Status:

Historic >20 yrs	Recent <=20 yrs
5	4

Presence:

Present Extant	Possibly Extirpated	Extirpated
8	1	0

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, 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

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
USDA PLANTS Calflora CalPhotos Consortium of California Herbaria California Department of Fish and Wildlife: CNDDB Quick Viewer

Suggested Citation
California Native Plant Society (CNPS). Inventory of Rare and Endangered Plants (online edition, v8-02). California Native Plant Society. Sacramento, CA. Accessed on .

-122.625,38.75