Species Details

Orcuttia pilosa

hairy Orcutt grass

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Classification

Scientific Name: Orcuttia pilosa Hoov.
Common Name: hairy Orcutt grass
Family:	Poaceae
Element Code:	PMPOA4G040
USDA Plants Symbol:	ORPI
Synonyms/Other Names:

Conservation Status

CA Rare Plant Rank:	1B.1
Fed List:	FE (1997-03-26)
State List:	CE (1979-09-01)
Global Rank:	G1
State Rank:	S1
Other Status:	SB_CalBG/RSABG
CRPR Changes:
Add Date:	1980-01-01
Date Edited:	2021-05-26

Ecology and Life History

Lifeform: annual herb

Blooming Period: May-Sep

Elevation:
46 - 200 meters
150 - 655 feet

General Habitats:

Vernal pools

Microhabitat Details:

Microhabitat:

Notes

Notes: Seriously threatened by agriculture, urbanization, overgrazing, non-native plants, and trampling. See Bulletin of the Torrey Botanical Club 68:155 (1941) for original description, and American Journal of Botany 69:1082-1095 (1982) for taxonomic treatment.
Threats:
Taxonomy:

Threat List Data from the CNDDB

THREAT LIST:
Threat List Total:	11
	Total EOs	% of EOs
EOs with Threat Listed:	31	86 %
Agriculture	18	50%
Grazing	17	47%
Non-native plant impacts	9	25%
Disking	8	22%
Development	5	13%
Altered flood/tidal/hydrologic regime	4	11%
Foot traffic/trampling	3	8%
Road/trail construction/maint.	2	5%
Erosion/runoff	1	2%
ORV activity	1	2%
Other	1	2%

Occurrence Data from the CNDDB

Element Occurrence Ranks:
Total Occurrences:					36
A	B	C	D	X	U
3	9	4	3	15	2

Occurrence Status:
Historical >20 Years	23
Recent <=20 Years	13

Presence:
Presumed Extant	21
Possibly Extirpated	7
Presumed Extirpated	8

Location

California Endemic:

California Island:

States: Name (Code)
California (CA)

California Counties and Islands: Name (Code)
Glenn (GLE), Madera (MAD), Merced (MER), Stanislaus (STA), Tehama (TEH)

Quads: Name (Quad Code)
Cooperstown (3712065)*, Daulton (3711918), Gregg (3611988), Herndon (3611978), Kismet (3712011)*, Lanes Bridge (3611987), Logandale (3912242), Madera (3612081), Merced (3712034), Montpelier (3712056), Paulsell (3712066)*, Richardson Springs NW (3912188), Turlock Lake (3712055), Vina (3912281), Yosemite Lake (3712044)*

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.

Regional Map

Map

Presumed Extant

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CNPS Rare Plant Inventory