Senecio ertterae - T.M. Barkl.
Ertter's Ragwort
Taxonomic Status: Accepted
Related ITIS Name(s): Senecio ertterae T.M. Barkley (TSN 36128)
Unique Identifier: ELEMENT_GLOBAL.2.158854
Element Code: PDAST8H170
Informal Taxonomy: Plants, Vascular - Flowering Plants - Aster Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Dicotyledoneae Asterales Asteraceae Senecio
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Concept Reference
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Concept Reference: Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
Concept Reference Code: B94KAR01HQUS
Name Used in Concept Reference: Senecio ertterae
Conservation Status
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NatureServe Status

Global Status: G2
Global Status Last Reviewed: 07Jan2005
Global Status Last Changed: 07Jan2005
Rounded Global Status: G2 - Imperiled
Reasons: A narrow eastern Oregon endemic with only 15 known populations, restricted to a specific kind of ash deposit. Observed to be locally abundant on some of the beds, but the total number of plants fluctuates wildly (by orders of magnitude) between years. The species' habitat is somewhat threatened by off-road vehicles and other ground disturbance, e.g. hiking.
Nation: United States
National Status: N2

U.S. & Canada State/Province Status
Due to latency between updates made in state, provincial or other NatureServe Network databases and when they appear on NatureServe Explorer, for state or provincial information you may wish to contact the data steward in your jurisdiction to obtain the most current data. Please refer to our Distribution Data Sources to find contact information for your jurisdiction.
United States Oregon (S2)

Other Statuses

Comments on USESA: Was previously a candidate, but was removed from candidacy on February 28, 1996 in a notice of review.
U.S. Fish & Wildlife Service Lead Region: R1 - Pacific

NatureServe Global Conservation Status Factors

Range Extent Comments: Restricted to a tiny portion of eastern Malheur Co., Oregon. Predominantly in the Leslie Gulch area. Generalized range about 160 sq. km.

Area of Occupancy: 3-500 4-km2 grid cells
Area of Occupancy Comments: Population footprint of 1.5 sq. km.

Number of Occurrences: 6 - 20
Number of Occurrences Comments: 15 reported occurrences

Population Size Comments: Population numbers estimated from 245,000 to 735,000.

Number of Occurrences with Good Viability/Integrity: Few (4-12)
Viability/Integrity Comments: Nine occurrences with good to excellent viability

Overall Threat Impact: Medium
Overall Threat Impact Comments: Mining and ORV's. Removal of critical substrate for road surfacing and construction. Increased recreation development and use is a threat in the Leslie Gulch area. About 1/2 the population is affected.

Short-term Trend: Relatively Stable (<=10% change)
Short-term Trend Comments: Populations assumed to be stable.

Long-term Trend: Unknown

Environmental Specificity: Very narrow. Specialist or community with key requirements scarce.
Environmental Specificity Comments: Species restricted to the greenish-yellow volcanic ash deposits found in the gulches along Owyhee River

Other NatureServe Conservation Status Information

Distribution
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Global Range: Restricted to a tiny portion of eastern Malheur Co., Oregon. Predominantly in the Leslie Gulch area. Generalized range about 160 sq. km.

U.S. States and Canadian Provinces

Due to latency between updates made in state, provincial or other NatureServe Network databases and when they appear on NatureServe Explorer, for state or provincial information you may wish to contact the data steward in your jurisdiction to obtain the most current data. Please refer to our Distribution Data Sources to find contact information for your jurisdiction.
Color legend for Distribution Map

U.S. & Canada State/Province Distribution
United States OR

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
OR Malheur (41045)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
17 Lower Owyhee (17050110)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Basic Description: An annual herb, 0.5-4 dm tall, with bluish-green, blunt-toothed leaves and with yellow flower heads borne above the leafy part of the plant. Blooms from July to October.
Terrestrial Habitat(s): Bare rock/talus/scree, Grassland/herbaceous
Habitat Comments: Dry, clay-ash deposits within rhyolite and welded tuff canyons. Most of the plants are low enough to be potentially exposed to flash flooding. 900-1200 m elevation.
Economic Attributes Not yet assessed
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Management Summary Not yet assessed
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Population/Occurrence Delineation Not yet assessed
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Population/Occurrence Viability
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U.S. Invasive Species Impact Rank (I-Rank) Not yet assessed
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Authors/Contributors
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NatureServe Conservation Status Factors Edition Date: 01Jan2005
NatureServe Conservation Status Factors Author: Oregon Natural Heritage Program

Botanical data developed by NatureServe and its network of natural heritage programs (see Local Programs), The North Carolina Botanical Garden, and other contributors and cooperators (see Sources).

References
Help
  • Cronquist, A. 1994. Asterales. In A. Cronquist, A.H. Holmgren, N.H. Holmgren, J.L. Reveal, and P.K. Holmgren. Intermountain flora: Vascular plants of the Intermountain West, U.S.A. Vol. 5. New York Botanical Garden, Bronx. 496 pp.

  • Grimes, J.W. 1984. Notes on the flora of Leslie Gulch, Malhe ur County, OR. Madrono, Vol. 31, No. 2:80-85.

  • Kagan, J.S. 1991. Draft Listing Package for Senecio ertterae. Unpublished report, for U.S. Fish and Wildlife Service by Native Plant Society. On file at ORNHP.

  • Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.

  • Kaye, T., W. Messinger, and S. Massy. 1991. Senecio ertterae status report. Unpublished document, report submitted to the USFWS, by the Oregon Department of Agriculture, Salem.

  • Kaye, Thomas, Wes Messinger, Susan Massy and Robert Meinke. 1990. GRATIOLA HETEROSEPALA: Inventory and breeding system evaluation. Unpublished document, report submitted to the Lakeview District BLM, OSDA/BLM Challenge-Cost Share Project Number 89-.

  • Meinke, R.J. 1982. Threatened and Endangered Vascular Plants of Oregon: An Illustrated Guide. U.S. Fish and Wildlife Service, Region 1, Portland, Oregon. 326 pp.

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