CNPS

CNPS Rare Plant Inventory

Species Details

Stylocline citroleum

oil neststraw

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No Photo Available

  Classification

Scientific Name:
Stylocline citroleum Morefield
Common Name:
oil neststraw
Family: Asteraceae
Element Code: PDAST8Y070
USDA Plants Symbol: STCI10
Synonyms/Other Names:

  Conservation Status

CA Rare Plant Rank: 1B.1
Fed List: None
State List: None
Global Rank: G3
State Rank:
 S3
Other Status: BLM_S
CRPR Changes:
Add Date: 1994-01-01
Date Edited: 2022-06-08

  Ecology and Life History

Lifeform: annual herb
Blooming Period: Mar-Apr
JFMAMJJASOND
Elevation:
50 - 400 meters
165 - 1310 feet
General Habitats:
  • Chenopod scrub
  • Coastal scrub
  • Valley and foothill grassland
Microhabitat Details:
Microhabitat:
  • Clay

  Notes

Notes:
Possibly threatened by energy development and urbanization. See Madroño 39(2):123 (1992) for original description and Fremontia 27(1):12-15 (1999) for species account.
Threats:
Taxonomy:

  Threat List Data from the CNDDB

Threat List Total: 4
Total EOs % of EOs
EOs with Threat Listed: 79 94 %
THREAT LIST:
Mining 77 91%
Road/trail construction/maint. 3 3%
Other 2 2%
Altered flood/tidal/hydrologic regime 1 1%

  Occurrence Data from the CNDDB

Total Occurrences: 84
Element Occurrence Ranks:
A B C D X U
0 55 14 0 0 15
Occurrence Status:
Historical >20 Years 70
Recent <=20 Years 14
Presence:
Presumed Extant 84
Possibly Extirpated 0
Presumed Extirpated 0

  Location

California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Kern (KRN), San Diego (SDG)*
Quads: Name (Quad Code)
East Elk Hills (3511934), La Jolla (3211772), La Mesa (3211771), Mouth of Kern (3511923), National City (3211761), Oil Center (3511848)*, Point Loma (3211762), Reward (3511936), Rio Bravo Ranch (3511847), Taft (3511924), Tupman (3511933), West Elk Hills (3511935)
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
Click on quad for name. Hold Shift Key to use mouse scroll wheel

  Selected References

Suggested Citation:
California Native Plant Society, Rare Plant Program. 2024. Rare Plant Inventory (online edition, v9.5). Website https://www.rareplants.cnps.org [accessed 26 November 2024].