Amsonia kearneyana - Woods.
Kearney's Slimpod
Other English Common Names: Kearney's Blue-star
Taxonomic Status: Accepted
Related ITIS Name(s): Amsonia kearneyana Woods. (TSN 184767)
Unique Identifier: ELEMENT_GLOBAL.2.136515
Element Code: PDAPO030M0
Informal Taxonomy: Plants, Vascular - Flowering Plants - Dogbane Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Dicotyledoneae Gentianales Apocynaceae Amsonia
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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: Amsonia kearneyana
Conservation Status
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NatureServe Status

Global Status: G1
Global Status Last Reviewed: 21Oct2013
Global Status Last Changed: 30Nov1987
Ranking Methodology Used: Ranked by calculator
Rounded Global Status: G1 - Critically Imperiled
Reasons: Native populations are known only from an isolated area on the western slope of the Baboquivari Mountains of Arizona and from a small area nearby in northern Sonora, Mexico. The very small population in Arizona is threatened with damage or destruction from major flash floods, wildfires, and overuse of the habitat by livestock. The plants are not reproducing successfully due to insect predation on the embryos. Introduced (about 1989) to an apparently appropriate habitat on the east side of the Baboquivari Mountains in a conservation management effort toward saving the species from extinction.
Nation: United States
National Status: N1

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 Arizona (S1)

Other Statuses

U.S. Endangered Species Act (USESA): LE: Listed endangered (19Jan1989)
Comments on USESA: Amsonia kearneyana was proposed endangered on July 10, 1987 and determined endangered on January 19, 1989.
U.S. Fish & Wildlife Service Lead Region: R2 - Southwest

NatureServe Global Conservation Status Factors

Range Extent Comments: Local endemic with naturally occurring populations from South Canyon, Baboquivari Mountains, Pima County, Arizona and also Sonora, Mexico (along US-MX border) in a limited area (R. Paredes, SOCDC, pers. comm. to M. Martinez, 1/97). A second canyon (Brown Canyon) in the Baboquivari Mountains was established as an introduced site in fall 1988 and winter 1989, and again in winter 1992. All but 33 of the 181 individuals introduced in 1988/1989 survived a major flooding event in the summer of 1990.

Area of Occupancy: 1-25 4-km2 grid cells
Area of Occupancy Comments:  

Number of Occurrences: 1 - 5
Number of Occurrences Comments: Occupies a few canyons in the Baboquivari Mountains. Formerly known only from (probable) type locality in Arizona, on west-facing drainage. occupies a few canyons in the Baboquivari Mountains. Discovered about 1996 nearby in Sonora, Mexico.

Population Size Comments: 8 individuals from one population in Arizona - formerly 25 (5/93 Recovery Plan). In fall 1988 and winter 1989, 181 individuals were transplanted to another canyon in the same mountain range. A flood removed most of the individuals except for 33 in the summer of 1990. Another planting was made in the winter of 1992. (FWS, in AGFD 2012). Abundance of this plant is considered low (Laurenzi and Spence, 2012).

Number of Occurrences with Good Viability/Integrity: Unknown

Overall Threat Impact: High
Overall Threat Impact Comments: U.S. localities are well isolated, but flash-flooding, wildfire and grazing are potential threats.

Short-term Trend: Decline of 10-30%

Long-term Trend: Unknown

Intrinsic Vulnerability Comments: From a very isolated area in Arizona and Sonora, Mexico.

Environmental Specificity: Moderate. Generalist or community with some key requirements scarce.

Other NatureServe Conservation Status Information

Distribution
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Global Range: Local endemic with naturally occurring populations from South Canyon, Baboquivari Mountains, Pima County, Arizona and also Sonora, Mexico (along US-MX border) in a limited area (R. Paredes, SOCDC, pers. comm. to M. Martinez, 1/97). A second canyon (Brown Canyon) in the Baboquivari Mountains was established as an introduced site in fall 1988 and winter 1989, and again in winter 1992. All but 33 of the 181 individuals introduced in 1988/1989 survived a major flooding event in the summer of 1990.

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 AZ

Range Map
No map available.

National Distribution Outside of U.S. & Canada: Mexico

U.S. Distribution by County Help
State County Name (FIPS Code)
AZ Pima (04019)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
15 Brawley Wash (15050304)+, San Simon Wash (15080101)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Basic Description: A perennial herb with up to 50 erect stems forming a hemispherical plant about 8 dm tall. Clusters of white flowers bloom in April-May.
Palustrine Habitat(s): Riparian
Terrestrial Habitat(s): Desert
Habitat Comments: Stable alluvial deposits of small boulders and cobbles along a dry wash. Grows in full sun or partial shade in a riparian vegetation zone surrounded by Sonoran Desert scrub.
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: 03Dec1987
NatureServe Conservation Status Factors Author: Roth, E., and P. Warren (1987), rev. M. Martinez (1997), rev. S Schuetze (2012).

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
  • 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.

  • Kearney, T.H., R.H. Peebles, and collaborators. 1951. Arizona flora. 2nd edition with Supplement (1960) by J.T. Howell, E. McClintock, and collaborators. Univ. California Press, Berkeley. 1085 pp.

  • Nabhan, G.P., E. Saucedo Monarque, P. Olwell, P. Warren, W. Hodgson, C. Gallindo-Duarte, R. Bittman, and S. Anderson. 1989. Plants at risk in the Sonoran Desert: an international concern. Introduction and a preliminary list. Agave 3(3): 14-15.

  • Rutman, S. 1987. Endangered and threatened wildlife and plants; Proposal to determine Amsonia kearneyana to be an endangered species. Federal Register 52(132): 26030-26033.

  • Rutman, S. 1992. Handbook of Arizona's endangered, threatened, and candidate plants. U.S. Fish and Wildlife Service, Phoenix, Arizona.

  • Shreve, F., and I.L. Wiggins. 1964. Vegetation and flora of the Sonoran Desert. 2 volumes. Stanford Univ. Press, Stanford. 1740 pp.

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