Glossopetalon clokeyi - (Ensign) St. John
Clokey's Greasebush
Other Common Names: Clokey's greasebush
Synonym(s): Forsellesia clokeyi Ensign
Taxonomic Status: Accepted
Related ITIS Name(s): Glossopetalon clokeyi (Ensign) St. John (TSN 502805)
Unique Identifier: ELEMENT_GLOBAL.2.159727
Element Code: PDCRO04010
Informal Taxonomy: Plants, Vascular - Flowering Plants - Other flowering plants
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Dicotyledoneae Rosales Crossosomataceae Glossopetalon
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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: Glossopetalon clokeyi
Taxonomic Comments: USFWS tracks as synonym 01 - FORSELLESIA CLOKEYI (9/93).
Conservation Status
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NatureServe Status

Global Status: G2
Global Status Last Reviewed: 14Jun2013
Global Status Last Changed: 24May1996
Ranking Methodology Used: Ranked by calculator
Rounded Global Status: G2 - Imperiled
Reasons: An extremely rare Nevada endemic; known only from 13 sites, and 7 occurrences in the core limestone areas of the Charleston Mountains in Kyle Canyon, Carpenter Canyon, and Robber's Roost. Threatened by increased recreational rock climbing even though it's located in the Spring Mountains National Recreation Area.
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 Nevada (S2)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: The extent of occurrence for this species is estimated at 47 km sq (NatureServe data 2013).

Area of Occupancy: 6-25 4-km2 grid cells
Area of Occupancy Comments: The area of occupancy is estimated at 8 2x2 sq km grid cells (NatureServe data 2013).

Number of Occurrences: 1 - 20
Number of Occurrences Comments: As of 2001, there were only 7 documented occurrence of this species mapped at a 1km separation distance (Morefield 2001).

Population Size Comments: Approximately 7,500 individuals were known as of 2001 (Morefield 2001).

Overall Threat Impact: Low
Overall Threat Impact Comments: The primary, and direct threat to Glossopetalon clokeyi is recreational climbing of the cliff areas and steep slopes where the species occurs. The limestone cliffs where this species occurs is known as one of the best areas in the United States for this type of climbing (USFS 1998). In 1998, the cliff habitats were characterized as 'generally good to excellent' with only localized impacts to vegetation on and beneath the cliffs (USFS 1998). With that said, the USFS (1998) Conservation Agreement also stated that vegetation disturbance and removal by climbers probably occurs along climbing routes and that this greasebush species may be directly impacted. With that said, because it is contained and protected from development by the Spring Mountains Conservation Agreement (1998), no potential indirect or direct impacts are expected because of the Multiple Species Conservation Plan for Clark County, NV (Sada et al. 2008).

Environmental Specificity: Very narrow. Specialist or community with key requirements scarce.
Environmental Specificity Comments: Occurs only in crevices or on ledges of limestone cliffs in the Spring Mountains, Nevada.

Other NatureServe Conservation Status Information

Distribution
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Global Range: The extent of occurrence for this species is estimated at 47 km sq (NatureServe data 2013).

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 NV

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
NV Clark (32003)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
15 Las Vegas Wash (15010015)+
16 Ivanpah-Pahrump Valleys (16060015)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Basic Description: An intricately branched small shrub, 1.5-2 dm tall, with slender, bright green, spiny branches.
Duration: PERENNIAL, Long-lived
Terrestrial Habitat(s): Cliff
Habitat Comments: Inaccessible cliff faces and crevices of limestone cliffs at 2150-2790 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: 12Jun2013
NatureServe Conservation Status Factors Author: Oliver, L.

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
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  • Clokey, I.W. 1951. Flora of the Charleston Mountains, Clark County, Nevada. University of California Publications in Botany 24: 1-274.

  • Ensign, M. A. 1942. A revision of the celastraceous genus Forsellesia (Glossopetalon). American Midland Naturalist 27: 501-511.

  • Kartesz, J. T. 1991. Synonym names from 1991 checklist, as extracted by Larry Morse, TNC, June 1991.

  • Kartesz, J.T. 1988. A flora of Nevada. Ph.D. dissertation. Univ. of Nevada, Reno. 3 volumes. 1729 pp.

  • 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.

  • Management and Engineering Technologies International, Inc. (METI) and Rocky Mountain Research Station (RMRS); Grassland, Desert and Shrubland Program. 2012. Spring Mountains National Recreation Areas 2011 Annual Report. Monitoring and Evaluation for Conserving Biological Resources of the Spring Mountains National Recreation Area. 171pp. Accessed online on 6_14_2013 at: http://www.fs.fed.us/rm/pubs_other/rmrs_2012_solen_s001.pdf

  • Morefield, J.D., editor. 2001. Nevada rare plant atlas [with rare plant fact sheets]. Available as a pdf file at: http://heritage.nv.gov/atlas/atlas.html. Compiled by the Nevada Natural Heritage Program, Carson City, for the U.S. Fish and Wildlife Service, Reno, Nevada.

  • Nachlinger, J. 1994. Spring Mountains ecosystem: An ecological investigation of sensitive plant taxa with emphasis on the status of eight candidate plants for listing under the Endangered Species Act. Reno: The Nature Conservancy, final Report to the U.S. Fish and Wildlife Service, Reno. 60 p. + two appendices.

  • Nevada Natural Heritage Program. 1998-present. Index to available images (web page). Carson City: Nevada Natural Heritage Program public web site, http://heritage.nv.gov/images.htm.

  • Sada, D., M. Stone, D. Mouat, J. Lancaster, P. Lee, S. MacCabe, L. Bice, M. Hamilton and S. Wainscott. 2008a. Adaptive Management Report for the Clark County, Nevada, Multiple Species Habitat Conservation Plan. Clark County, Nevada. Department of Air Quality and Environmental Management. Desert Conservation Program. 500 South Grand Central Parkway. Las Vegas, Nevada 89155-5201. Accessed online on 4_13_2013 at: http://www.clarkcountynv.gov/Depts/dcp/Documents/Library/dcp%20reports/2008/2008_AMR_ReportAndAppendices.pdf

  • U.S. Forest Service Intermountain Region, State of Nevada, Department of Conservation and Natural Resources, U.S. Fish and Wildlife Services, Pacific Region. 1998a. Conservation Agreement for the Spring Mountains National Recreation Area Clark and Nye Counties, Nevada. Accessed online on Jun 12, 2013 at: http://www.clarkcountynv.gov/Depts/dcp/Documents/Library/other%20reports/collab/ConservationAgreementForTheSpringMountainsNRA_April_1998.pdf

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