Echinocereus fendleri var. kuenzleri

(Castetter, Pierce & Schwerin) L. Benson

Kuenzler's Hedgehog Cactus

T2T2 (G4G5T2Q) Found in 10 roadless areas NatureServe Explorer →
T2T2Global Rank
Very high - highThreat Impact
Kuenzler hedgehog cactus (Echinocereus fendleri var. kuenzleri). Photo by U.S. Fish & Wildlife Service, Public Domain (U.S. Government Work), via ECOS.
U.S. Fish & Wildlife Service, https://www.usa.gov/government-works
Identity
Unique IDELEMENT_GLOBAL.2.158427
Element CodePDCAC06062
Record TypeSPECIES
ClassificationVariety
Classification StatusStandard
Name CategoryVascular Plant
CITESAppendix II
Endemicendemic to a single state or province
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderCaryophyllales
FamilyCactaceae
GenusEchinocereus
Synonyms
Echinocereus kuenzleriCastetter, Pierce & Schwerin
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.
Conservation Status
Rank MethodLegacy Rank calculation - Excel v3.1x
Review Date2016-04-20
Change Date2016-04-20
Edition Date2011-02-25
Edition AuthorsRoth, E. (1987), rev. DeBruin/Maybury (1996), rev. A. Tomaino (2009), Cordeiro, J. and L. Oliver (2011)
Threat ImpactVery high - high
Range Extent1000-5000 square km (about 400-2000 square miles)
Number of Occurrences6 - 20
Rank Reasons
Occurs in the Central Highlands of New Mexico. Recent surveys have found the species to be more widespread and with higher density within New Mexico than previously thought. Threats include fires, livestock grazing, and illegal harvest/collection.
Range Extent Comments
Mountains of south-central New Mexico in Lincoln, Otero, and Eddy Counties. Its range extends approximately 100 miles (USFWS 2005) on the eastern slopes of the Sacramento, Capitan, and Guadalupe Mountains. Mellen (1991), reported it as far south as the state of Chihuahua, Mexico, in the Santa Clara Valley but this is likely a misidentification of E. hempelii.
Occurrences Comments
Eleven population centers are known; two in the Guadalupe Mountains, eight in the Sacramento Range, and one in low hills between the Guadalupe Mountains and the Sacramento Range (USFWS 2005). May et al. (2008) found 2449 cacti on 21 hillsides at the Fort Stanton Special Area of Environmental Concern in Lincoln Co. (none in Eddy Co.), New Mexico; also noting several additional sites between the surveyed area and Eddy Co. in subsequent years with the species present.
Threat Impact Comments
Major threats are wild or prescribed fires and livestock grazing. Recovery from fire is slow; severe or frequent fire would be a threat (Sivinski 2007). Livestock grazing is a threat due to trampling, erosion, and removal of insulating cover that may affect seedling establishment (USFWS 2005). Collection was a severe threat but greenhouse-grown plants and seeds are now available; occasional poaching may still occur but is unlikely in most of its range (USFWS 2005). Right-of-way maintenance is a potential threat. Future development could also threaten the species. Sivinski (1999) studied the effects of a 1993 natural wildfire that burned within a population in the Guadalupe Mountains on the Lincoln National Forest and this population was found to have only one-third the numbers of cacti within the burned area seven years after the fire, as compared to a similar area of adjacent unburned habitat. Fire mortality was apparently severe and regeneration of the burned population segment was slow, therefore, frequent prescribed fires could have significant impacts on this cactus (USFWS, 2005).
Ecology & Habitat

Habitat

Limestone ledges, rock cracks, and gentle slopes; or on flat steps of sunny, grass-covered hillsides in the lower fringes of pinyon-juniper savannah. Occurs at elevations from 1770 to 2100 m and requires limestone substrate that is relatively stable (USFWS 1985).

Ecology

The effects of prescribed burning on this taxon have been of special concern due to its endangered status. Sivinski (2007) conducted a survey on this taxon following wildfire. Results indicated that although fire can cause high mortality in this taxon, the impact of prescribed fire can be significantly reduced by limiting the extent and frequency of burning. In some cases, fire might help increase Kuenzler's hedgehog cactus numbers by increasing germination and establishment opportunities (Sivinski 2007).
Terrestrial Habitats
SavannaGrassland/herbaceous
Other Nations (1)
United StatesN2
ProvinceRankNative
New MexicoS2Yes
Threat Assessments
ThreatScopeSeverityTiming
1 - Residential & commercial developmentPervasive - largeModerate or 11-30% pop. declineModerate - low
2 - Agriculture & aquaculturePervasive - largeModerate or 11-30% pop. declineHigh - moderate
2.3 - Livestock farming & ranchingPervasive - largeModerate or 11-30% pop. declineHigh - moderate
4 - Transportation & service corridorsPervasive - largeModerate or 11-30% pop. declineHigh - moderate
4.1 - Roads & railroadsPervasive - largeModerate or 11-30% pop. declineHigh - moderate
5 - Biological resource usePervasive - largeModerate or 11-30% pop. declineHigh - low
5.2 - Gathering terrestrial plantsPervasive - largeModerate or 11-30% pop. declineHigh - low
7 - Natural system modificationsPervasive - largeModerate or 11-30% pop. declineHigh (continuing)
7.1 - Fire & fire suppressionPervasive - largeModerate or 11-30% pop. declineHigh (continuing)

Plant Characteristics
DurationPERENNIAL
Economic Value (Genus)No
Roadless Areas (10)
New Mexico (10)
AreaForestAcres
Capitan MountainsLincoln National Forest14,069
Carrizo MountainLincoln National Forest17,280
CulpLincoln National Forest3,251
Jefferies CanyonLincoln National Forest8,934
Last Chance CanyonLincoln National Forest8,934
Little Dog And Pup CanyonsLincoln National Forest25,412
North Rocky CanyonLincoln National Forest8,068
Ortega PeakLincoln National Forest11,545
Tucson MountainLincoln National Forest16,905
West Face Sacramento MountainsLincoln National Forest41,176
References (12)
  1. Ferguson, D.J., and C. McDonald. 2006. New Mexico Rare Plants: <i>Echinocereus fendleri </i>var. <i>kuenzleri</i>. New Mexico Rare Plant Technical Council, Albuquerque, New Mexico. Online. Available: http://nmrareplants.unm.edu/rarelist_single.php?SpeciesID=70 (accessed 2009).
  2. Fletcher, R. 1985. Kuenzler hedgehog cactus (Echinocereus fendleri var. kuenzleri) recovery plan. U.S. Fish and Wildlife Service, Albuqerque, NM. 44 pp.
  3. Flora of North America Editorial Committee (FNA). 2003b. Flora of North America north of Mexico. Vol. 4, Magnoliophyta: Caryophyllidae, part 1. Oxford University Press, New York. xxiv + 559 pp.
  4. 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.
  5. May, B.C., D.B. Westera, C.M. Britton, and T. Bryson. 2008. Macro- and micro-habitat characteristics of Kuenzler's Hedgehog Cactus, <i>Echinocereus fendleri</i> var. <i>kuenzleri</i>. Haseltonia 14: 170-175.
  6. Sivinski, Robert C. 2007. Effects of a natural fire on a Kuenzler's hedgehog cactus (<i>Echinocereus fendleri</i> var. <i>kuenzleri</i>) and nylon hedgehog cactus (<i>Echinocereus viridiflorus</i>) population in Southeastern New Mexico. In: Barlow-Irick, P.; Anderson, J.; McDonald, C., tech eds. Southwestern rare and endangered plants: Proceedings of the Fourth Conference; March 22-26, 2004; Las Cruces, New Mexico. Proceedings. RMRS-P-48CD. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 93-97. [http://www.fs.fed.us/rm/pubs/rmrs_p048/rmrs_p048_093_097.pdf]
  7. USDI Bureau of Land Management (BLM). 2003. Biological evaluation: Effects of fire on Kuenzler's hedgehog cactus (<i>Echinocereus fendleri </i>var. <i>kuenzleri</i>), an endangered species in the northern Chihuahuan Desert. Carlsbad, New Mexico: U.S. Department of the Interior, Bureau of Land Management. 19 pp.
  8. U.S. Fish and Wildlife Service (USFWS). 1985. Kuenzler hedgehog cactus (<i>Echinocereus fendleri var. kuenzleri</i>) recovery plan. U.S. Fish and Wildlife Service, Albuquerque, New Mexico. 44 pp.
  9. U.S. Fish and Wildlife Service (USFWS). 2005. Kuenzler's hedgehog cactus <i>Echinocereus fendleri </i>Englemann var. <i>kuenzleri </i>(Castetter, Pierce & Schwerin) L. Benson 5-Year Review. Region 2 Regional Office and New Mexico Ecological Services Field Office, Albuquerque, New Mexico. 18 pp. Online. Available: http://ecos.fws.gov/docs/five_year_review/doc744.pdf (accessed 2009).
  10. U.S. Fish and Wildlife Service (USFWS). 2013. 90-Day Finding on a Petition To Delist or Reclassify From Endangered to Threatened Five Southwest Species. Federal Register 78(174): 55046-55051.
  11. U.S. Fish and Wildlife Service (USFWS). 2017. Reclassifying <i>Echinocereus fendleri </i>var. <i>kuenzleri </i>from Endangered to Threatened. Proposed rule and 12-month petition finding. Federal Register 82(4): 1677-1684.
  12. U.S. Fish and Wildlife Service (USFWS). 2018. Reclassifying <i>Echinocereus fendleri </i>var. <i>kuenzleri </i>from Endangered to Threatened. Final Rule. Federal Register 83(92): 21928-21936.