Species Details

Orcuttia tenuis

slender Orcutt grass

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Photo of Orcuttia tenuis
© 2013 Justy Leppert
Photo of Orcuttia tenuis
© 2008 F. Gauna
Photo of Orcuttia tenuis
© 2014 Dean Wm. Taylor
Lifeform: annual herb
Blooming Period: May-Sep(Oct)
JFMAMJJASOND
Elevation:
35 - 1760 meters
115 - 5775 feet
General Habitats:
  • Vernal pools
Microhabitat Details:
Microhabitat:
  • Gravelly (often)
Notes:
Seriously threatened by agriculture, residential development, grazing, trampling, vehicles, recreational activities, logging, fire, and non-native plants. Species management guidelines adopted by Lassen NF (USFS) and BLM. See American Journal of Botany 21:131 (1934) for original description and 69:1082-1095 (1982) for taxonomic treatment.
Threats:
Taxonomy:
Threat List Total: 14
Total EOs % of EOs
EOs with Threat Listed: 84 84 %
THREAT LIST:
Grazing 61 61%
Foot traffic/trampling 34 34%
ORV activity 24 24%
Other 24 24%
Development 11 11%
Total Occurrences: 100
Element Occurrence Ranks:
A B C D X U
14 50 19 3 7 7
Occurrence Status:
Historical >20 Years 32
Recent <=20 Years 68
Presence:
Presumed Extant 93
Possibly Extirpated 4
Presumed Extirpated 3
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Butte (BUT), Lake (LAK), Lassen (LAS), Modoc (MOD), Plumas (PLU), Sacramento (SAC), Shasta (SHA), Siskiyou (SIS), Tehama (TEH)
Quads: Name (Quad Code)
Almanor (4012122), Ambrose (4112058), Balls Ferry (4012242), Bend (4012232), Boles Meadows West (4112068), Buffalo Creek (3812152), Burney (4012186), Cottonwood (4012243), Crank Mountain (4112142), Dales (4012231), Dana (4112115), Donica Mtn. (4112132), Elk Grove (3812143), Enterprise (4012253), Hager Basin (4112077), Happy Camp Mtn. (4112141), Harvey Mtn. (4012161), Kelseyville (3812287), Knobcone Butte (4112151), Middletown (3812275), Murken Bench (4012174), Old Station (4012164), Palermo (3912145), Palo Cedro (4012252), Poison Lake (4012162), Richardson Springs NW (3912188), Spaulding Butte (4112152), Swain Mountain (4012141), Swains Hole (4012163), Timbered Crater (4112124), Tuscan Buttes Ne (4012241), Vina (3912281), Washington Mtn. (4112048), West Prospect Peak (4012154), Whittemore Ridge (4112066)
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.
Presumed Extant
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