Tonestus aberrans - (A. Nels.) Nesom & Morgan
Idaho Goldenweed
Synonym(s): Haplopappus aberrans (A. Nels.) Hall ;Triniteurybia aberrans (A. Nelson) Brouillet, Urbatsch & R.P. Roberts
Taxonomic Status: Accepted
Unique Identifier: ELEMENT_GLOBAL.2.135875
Element Code: PDASTE0010
Informal Taxonomy: Plants, Vascular - Flowering Plants - Aster Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Dicotyledoneae Asterales Asteraceae Tonestus
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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: Tonestus aberrans
Conservation Status
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NatureServe Status

Global Status: G3
Global Status Last Reviewed: 23Feb2018
Global Status Last Changed: 14Apr1994
Ranking Methodology Used: Ranked by calculator
Rounded Global Status: G3 - Vulnerable
Reasons: Endemic to central Idaho and southwestern Montana.  Approximately 21 sites.  More information is needed about the current condition of occurrences.
Nation: United States
National Status: N3

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 Idaho (S3), Montana (S1S2)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: Regional endemic of central Idaho and southwestern Montana.  Known from the Sawtooth Mountains of Idaho, and from the Bitterroot Mountains of Montana (Flora of North America Editorial Committee 2006).

Area of Occupancy: 6-25 4-km2 grid cells
Area of Occupancy Comments:  

Number of Occurrences: 21 - 80
Number of Occurrences Comments: In Idaho, occurrence data is not available but there are 15 specimens in the Consortium of Pacific Northwest Herbaria as of February 2018; of these 7 were collected within the last 30 years.  In Montana, there are 6 observations, all of which were observed 21 to 29 years ago (Montana Natural Heritage Program 2018).

Overall Threat Impact: Medium
Overall Threat Impact Comments: Potential threats include road construction/maintenance and rock climbing activity (Montana Natural Heritage Program 2018).

Other NatureServe Conservation Status Information

Distribution
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Global Range: Regional endemic of central Idaho and southwestern Montana.  Known from the Sawtooth Mountains of Idaho, and from the Bitterroot Mountains of Montana (Flora of North America Editorial Committee 2006).

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 ID, MT

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
MT Ravalli (30081)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
17 Bitterroot (17010205)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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General Description: Idaho Golden-weed is a perennial herb with several slender stems that are 5-25 cm high and which arise from a branched rootcrown. The basal leaves are up to 10 cm long and have sharply toothed margins, while the upper leaves are sessile and narrower. Foliage is glandular-hairy. 1 to a few short-stalked flower heads are borne in the axils of the uppermost reduced leaves, or bracts. Each head has 3-4 series of narrow, green-tipped, overlapping, glandular involucral bracts that are up to 1 cm high. There are 25-50 reddish-yellow disk flowers that are 6-8 mm long, and ray flowers are lacking. The elongate achenes are topped by numerous, dingy white bristles, which form a pappus of unequal length.
Diagnostic Characteristics: A hand lens and technical key are necessary for positive identification. H. carthamoides also has sharply toothed leaves and lacks ray flowers, but its involucral bracts are 15-30 mm high.
Terrestrial Habitat(s): Cliff, Forest - Conifer, Forest Edge, Forest/Woodland
Habitat Comments: Occurs in crevices and outcrops of granite cliffs, in dry coniferous forests, montane zone or at and above timberline; 1300?2500 m (Flora of North America Editorial Committee 2006).  Habitat described as upper Abies lasiocarpa zone in rock crevices and Pinus ponderosa / Pseudotsuga menziesii ecotone in cracks near bases of cliffs.
Economic Attributes Not yet assessed
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Management Summary
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Stewardship Overview: Revisit sites.  Document the species' current range, status, and trends.  Confirm level of threats.  Search for additional occurrences in areas predicted to be suitable (Montana Natural Heritage Program 2017).
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: 23Feb2018
NatureServe Conservation Status Factors Author: Caicco, S., rev. E. Joyal, rev. A. Tomaino (2018)
Management Information Edition Date: 23Feb2018
Management Information Edition Author: Tomaino, A.
Element Ecology & Life History Edition Date: 28Oct1994
Element Ecology & Life History Author(s): JM

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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  • Brouillet, L., L. Urbatsch, and R.P. Roberts. 2004.  Tonestus kingii and T. aberrans are related to Eurybia and the Machaerantherinae (Asteraceae: Astereae) based on nrDNA (ITS and ETS) data: Reinstatement of Herrickia and a new genus, Triniteurybia.  SIDA, Contributions to Botany 21(2):  889-900.

  • Flora of North America Editorial Committee. 2006b. Flora of North America North of Mexico. Vol. 20. Magnoliophyta: Asteridae, part 7: Asteraceae, part 2. Oxford Univ. Press, New York. xxii + 666 pp.

  • Hall, H. M. 1928. The genus HAPLOPAPPUS, a phylogenetic study in the compositae. Carnegie Institution of Washington Publication No. 389, Washington D.C. 391 pp.

  • Hall, H.M. 1928. The genus Haplopappus: A phylogenetic study in the Compositae. Carnegie Institution of Washington, Washington D.C. 391 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.

  • Kartesz, J.T., and R. Kartesz. 1980. A synonymized checklist of the vascular flora of the United States, Canada and Greenland. Vol. 2. The biota of North America. Univ. of North Carolina Press, Chapel Hill. 500 pp.

  • Montana Natural Heritage Program. 2017. Idaho Goldenweed (Tonestus aberrans) predicted suitable habitat models created on October 20, 2017. Montana Natural Heritage Program, Helena, MT. 14 pp.

  • Montana Natural Heritage Program. 2018. Montana Field Guide. Online. Available: http://fieldguide.mt.gov (Accessed 2018).

  • Shelly, J. S. and M. Mantas. 1993. Noteworthy collections, Montana. Madrono 40:271-273.

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