(Coult.) Britt. & Rose
Identity
Unique IDELEMENT_GLOBAL.2.159485
Element CodePDCAC0J0E0
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
IUCNLeast concern
CITESAppendix I
Endemicoccurs (regularly, as a native taxon) in multiple nations
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderCaryophyllales
FamilyCactaceae
GenusEchinomastus
USESAPS
SynonymsNeolloydia erectocentra(Coult.) L.BensonSclerocactus erectocentrus(Coult.) N.P. Taylor
Concept ReferenceKartesz, 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.
Taxonomic CommentsKartesz (1994 checklist) doesn't recognize varieties in this species but does recognize S. johnsonii. Sometimes placed in genus Echinocactus, Echinomastus, or Neolloydia (FNA 2003). FNA recognizes S. johnsonii and the varieties erectocentrus and acunensis (of S. erectocentrus) as distinct but transfers them to the genus Echinomastus. Morphological and molecular studies by Baker (2007, 2012) support the transfer of E. acunensis, E. arizonicus, and E. erectocentrus into E. johnsonii but transfer them back to Sclerocactus as S. johnsonii var. johnsonii (including E. arizonicus), S. johnsonii ssp. acunensis, and S. johnsonii ssp. erectocentrus (Baker and Porter 2016).
Conservation Status
Rank MethodExpertise without calculation
Review Date2016-02-05
Change Date1996-07-09
Edition Date2016-02-05
Edition AuthorsLAMBERT, A. (1988), rev. L. Morse (1996), rev. A. Treher (2016)
Threat ImpactHigh - medium
Range Extent20,000-200,000 square km (about 8000-80,000 square miles)
Number of Occurrences21 - 80
Rank ReasonsKnown only from Arizona, New Mexico, and Sonora (Mexico), from perhaps several dozen sites altogether. Threats include drough, climate change, urban development, habitat degradation caused by law enforcement activities, habitat alteration by non-native invasive grasses, plant consumption and seed predation by insects (Moneilema gigas and Yosemitia graciella, respectively), and, potentially in the future, mining.
Range Extent CommentsArizona, Pinal Co and Pima Co. to west Cochise Co., Maricopa Co., Organ Pipe Cactus National Monument. Mexico in adjacent Sonora.
Threat Impact CommentsThreats include drough, climate change, urban development, habitat degradation caused by law enforcement activities, habitat alteration by non-native invasive grasses, plant consumption and seed predation by insects (Moneilema gigas and Yosemitia graciella, respectively), and, potentially in the future, mining.