Antennaria soliceps - Blake
Charleston Pussytoes
Other English Common Names: Charleston Mountain Pussytoes
Other Common Names: Charleston Mountain pussytoes
Taxonomic Status: Accepted
Related ITIS Name(s): Antennaria soliceps S.F. Blake (TSN 185189)
Unique Identifier: ELEMENT_GLOBAL.2.161232
Element Code: PDAST0H0P0
Informal Taxonomy: Plants, Vascular - Flowering Plants - Aster Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Dicotyledoneae Asterales Asteraceae Antennaria
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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: Antennaria soliceps
Taxonomic Comments: Phylogenetic analysis indicates Antennaria is a well-supported, monophyletic group (Bayer et al., 1996).
Conservation Status
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NatureServe Status

Global Status: G1G2
Global Status Last Reviewed: 17Sep2010
Global Status Last Changed: 18Feb2000
Rounded Global Status: G1 - Critically Imperiled
Reasons: This narrow range endemic is known from 25 sites (lump to 7 occurrences) in the core area of the Spring Mountains including Charleston Peak, ridgelines north and south of Charleston Peak, upper slopes of Lee Canyon, and Mummy Mountain. The mountain range as a whole is isolated by desert, which prevents alpine plant migration to other peaks in the Great Basin. The entire, locally abundant, species is probably a single genotype (all plants are female) and its lack of genetic variation contributes to its restriction to a narrow habitat-range, and reduces its ability to survive changing climatic or other conditions.
Nation: United States
National Status: N1N2

U.S. & Canada State/Province Status
United States Nevada (S1S2)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: It is restricted to a small section (<8 sq. km) of the Spring Mountains Kyle and Lee Canyons, in Clark County, Nevada, which are isolated by desert from other mountainous areas (Morefield, 2001).

Area of Occupancy: 1-125 4-km2 grid cells
Area of Occupancy Comments: Area estimated at 72.1+ ha (178+ acres) with maximum range dimensions 7.6 km excluding the most disjunct record (Morefield, 2001).

Number of Occurrences: 1 - 20
Number of Occurrences Comments: 25 sites occur in Clark County, Nevada (although at 1.0 km separation, these could be lumpted to 7 occurrences) between Griffith Peak and Charleston Peak including Charleston Peak, Mummy Mountain, Kyle and Lee Canyons, from 8,700 - 11,700 feet (Morefield, 2001) with records from Clokey (1951) from Rainbow Falls, Twin Falls, ridge near Charleston Peak, Chalreston Peak, and ridge above Twin Falls. However, published evidence indicates all belong to a single genetic individual with a single female genotype that reproduces asexually (Bayer and Minish, 1993).

Population Size Comments: This species can be locally abundant at some sites. NV NHP estimated 122,000+ individuals in 2001 (Morefield, 2001).

Number of Occurrences with Good Viability/Integrity: Very few (1-3)

Overall Threat Impact: Very high - medium
Overall Threat Impact Comments: Free roaming horses, hiking on scree slopes, expansion of southern Nevada development on the Spring Mountain area.

Short-term Trend: Unknown

Long-term Trend: Decline of <30% to increase of 25%
Long-term Trend Comments: The species appears stable as Clokey (1951) listed it as "locally abundant on a ridge to Charlestown Peak" and it is still considered locally abundant within its limited range today (Morefield, 2001).

Intrinsic Vulnerability Comments: No males known; entire range may be a single female genotype (Bayer and Minish, 1993). Note that apomictic production of fertile seed from female-only populations is known in some other species of Antennaria (cf. Bayer and Stebbins, 1987). Ability to survive changing climatic conditions will depend on the degree of phenotypic plasticity within the genotype.

Environmental Specificity: Very narrow. Specialist or community with key requirements scarce.
Environmental Specificity Comments: The very small range is surrounded by desert which acts as a barrier to alpine plant dispersal between mountain ranges in the Great Basin (Harper et al., 1978).

Other NatureServe Conservation Status Information

Distribution
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Global Range: It is restricted to a small section (<8 sq. km) of the Spring Mountains Kyle and Lee Canyons, in Clark County, Nevada, which are isolated by desert from other mountainous areas (Morefield, 2001).

U.S. States and Canadian Provinces
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: A perennial herb that forms mats to 4.5 dm wide. Leaves are white-wooly. Flowering stems each bear a single flower head surrounded by bracts with conspicuous blackish-brown spots. Blooms in July and August. Reproduces exclusively vegetatively.
Terrestrial Habitat(s): Alpine, Bare rock/talus/scree, Forest - Conifer, Forest/Woodland, Savanna
Habitat Comments: Its small range is restricted to limestone talus and gravel areas on north facing slopes, both above and below the treeline on a ridge in the Spring Mountains of Clark County, Nevada (Bayer and Stebbins, 1993; Bayer and Minish, 1993). Also in timbered mountain meadows. It occurs at an elevation of 8660-11650 feet (2640-3550 meters). It is found on talus and rocky slopes and rock outcrops in alpine zone and bristlecone woodland associations, in spring areas.
Economic Attributes Not yet assessed
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Management Summary
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Stewardship Overview: Management of this narrow range endemic should be restricted to monitoring on its range on Charleston Peak, ridgelines north and south of Charleston Peak, and the upper slopes of Lee Canyon, and Mummy Mountain as the area surrounding is isolated by desert, which prevents alpine plant migration to other peaks in the Great Basin. Management should be in cooperation with the Spring Mountains National Recreation Area Conservation Agreement. Because all populations appear to represent a single female genotype that reproduces asexually, the absence of genetic variation poses a challenge to the long-term survival of the species, particularly in the face of potential climatic warming; and management plans should take this into consideration.
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: 15Sep2010
NatureServe Conservation Status Factors Author: Roth, E. (1987), rev. J. Nachlinger & K. Maybury (1997), rev. L. Morse (1999), rev. J. Morefield (1999); Cordeiro, J. (2010)
Management Information Edition Date: 15Sep2010
Management Information Edition Author: Cordeiro, J.
Element Ecology & Life History Edition Date: 15Sep2010
Element Ecology & Life History Author(s): Cordeiro, J.

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
  • Bayer, R.J. and G.L. Stebbins. 1993. A synopsis with keys for the genus Antennaria (Asteraceae: Inuleae: Gnaphaliinae) of North America. Canadian Journal of Botany 71: 1589-1604.

  • Bayer, R.J., D.E. Soltis, and P.S. Soltis. 1996. Phylogenetic inferences in Antennaria (Asteraceae: Gnaphalieae: Cassiniinae) based on sequences from nuclear ribosomal DNA internal transcribed spacers (ITS). American Journal of Botany 83(4):516-527.

  • Bayer, R.J., and G.L. Stebbins. 1987. Chromosome numbers, patterns of distribution, and apomixis in Antennaria (Asteraceae: Inuleae). Systematic Botany 12(2): 305-319.

  • Bayer, R.J., and T.M. Minish. 1993. Isozyme variation, ecology and phytogeography of Antennaria soliceps (Asteraceae: Inuleae), an alpine apomict from the Spring Mountains, Nevada. Madrono 40(2): 75-89.

  • Blake, S. F. 1938. Two new Asteraceae from the Charleston Mountains, Nevada. Proceedings of the Biological Society of Washington 51: 7-10.

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

  • Harper, K.T., D.C. Freeman, W.K. Ostler, and L.G. Klikoff. 1978. The flora of the Great Basin mountain ranges: diversity, sources, and dispersal ecology. Great Basin Naturalist Memoirs 2: 81-103.

  • 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.

  • 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.

  • Mozingo, H.N., and M. Williams. 1980. The threatened and endangered plants of Nevada. U.S. Fish and Wildlife Service and Bureau of Land Management, Portland, OR. 268 pp.

  • U.S. Forest Service (USFS) Intermountain Region. 1998. Conservation agreement for the Spring Mountains National Recreation Area, Clark and Nye counties, Nevada. State of Nevada Department of Conservation and Natural Resources and U.S. Fish and Wildlife Service, Pacific Region. Pp. 1-H3.

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