Botrychium tunux - Stensvold & Farrar
Moosewort
Other English Common Names: Tunux' moonwort
Taxonomic Status: Provisionally accepted
French Common Names: botryche de Tunux
Unique Identifier: ELEMENT_GLOBAL.2.143492
Element Code: PPOPH01240
Informal Taxonomy: Plants, Vascular - Ferns and relatives
 
Kingdom Phylum Class Order Family Genus
Plantae Filicinophyta Ophioglossopsida Ophioglossales Ophioglossaceae Botrychium
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Concept Reference
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Concept Reference: Stensvold, M.C., D.R. Farrar, and C. Johnson-Groh. 2002. Two new species of moonworts (Botrychium subg. Botrychium) from Alaska. American Fern Journal 92(2):150-160.
Concept Reference Code: A02STE01HQUS
Name Used in Concept Reference: Botrychium tunux
Taxonomic Comments: Previously thought to be an unusual form of Botrychium lunaria (Stensvold, et al. 2002; Farrar 2006).
Conservation Status
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NatureServe Status

Global Status: G3G4
Global Status Last Reviewed: 31Aug2016
Global Status Last Changed: 31Aug2016
Ranking Methodology Used: Ranked by inspection
Rounded Global Status: G3 - Vulnerable
Reasons: Originally described from southeastern Alaska in 2002. Now also known from many additional locations in Wrangell-St. Elias, Alaska; southwest Yukon Territory; Glacier National Park, Montana; the Spring Mountains of southern Nevada; Yosemite National Park, California; in addition to sites in Idaho, Colorado, and New Mexico. It had been previously identified as Botrychium lunaria at some sites. Botrychium tunux may occur at high elevations scattered throughout the Rocky Mountains. It is locally abundant at some sites. Further research is ongoing. Threatened by all-terrain vehicles, grazing by wild horses, and debris avalanches.
Nation: United States
National Status: N3?
Nation: Canada
National Status: N3N4 (31Aug2016)

U.S. & Canada State/Province Status
United States Alaska (S2S3), California (S1), Colorado (S2), Idaho (SNR), Montana (S1), Nevada (S1), New Mexico (SNR), Wyoming (SU)
Canada British Columbia (S1S3), Yukon Territory (S1S3)

Other Statuses

Committee on the Status of Endangered Wildlife in Canada (COSEWIC): Candidate (Low) (26Jan2015)

NatureServe Global Conservation Status Factors

Range Extent Comments: Southeastern Alaska and adjacent Yukon (Farrar 2006). Also occurs at widely separated high elevation sites in Montana, Idaho, Colorado, New Mexico, Nevada, and California (Farrar 2011).

Area of Occupancy: 26-12,500 4-km2 grid cells
Area of Occupancy Comments:  

Number of Occurrences: 1 - 20
Number of Occurrences Comments: At least five locations are known in Alaska. Additional EOs to be documented at recently discovered sites in several jurisdictions.

Population Size Comments: Quite common in Wrangel-St. Elias National Park, Alaska, and Kluane National Park, Yukon; fairly common in Glacier National Park, Montana, and the Spring Mountains in southern Nevada (D. Farrar, pers. comm., 2007). Other Alaska populations are thought to be somewhat small; one occurrence in Alaska has approximately 100 individuals.

Overall Threat Impact: Medium
Overall Threat Impact Comments: Several sites in Alaska are threatened by disturbance from all-terrain vehicles. Threatened by wild horse grazing and debris avalanches in the Spring Mountains of southern Nevada (D. Farrar, pers. comm., 2007). No other threats currently known (D. Farrar, pers. comm., 2007).

Other NatureServe Conservation Status Information

Distribution
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Global Range: Southeastern Alaska and adjacent Yukon (Farrar 2006). Also occurs at widely separated high elevation sites in Montana, Idaho, Colorado, New Mexico, Nevada, and California (Farrar 2011).

U.S. States and Canadian Provinces
Color legend for Distribution Map

U.S. & Canada State/Province Distribution
United States AK, CA, CO, ID, MT, NM, NV, WY
Canada BC, YT

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
AK Southeast Fairbanks (CA) (02240), Valdez-Cordova (CA) (02261), Yakutat (02282)
CA Mariposa (06043)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
18 Upper Merced (18040008)+
19 Yakutat Bay (19010401)+, White River (19040101)+, Nebesna-Chisana Rivers (19040501)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Terrestrial Habitat(s): Alpine, Bare rock/talus/scree, Grassland/herbaceous, Sand/dune
Habitat Comments: Coastal habitats range from open sand on dunes and upper beaches to upper beach meadows with sandy substrates (Stensvold et al. 2002). Mountain habitats are sparsely vegetated alpine scree slopes (Farrar 2006). Also found in Wrangel-St. Elias NP, Alaska, along air strips, and in Kluane National Park, Yukon, along highway shoulders and ditches (D. Farrar, pers. comm., 2007).
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: 27Mar2002
NatureServe Conservation Status Factors Author: Oliver, L., rev. A. Tomaino (2007) and R. Lipkin (2007), rev. G. Davis (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
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  • Farrar, D. R. 2011. Botrychium tunux fact sheet. Ada Hayden Herbarium (ISC). Iowa State University, Ames, Iowa. December 2011. Online. Available: http://www.public.iastate.edu/~herbarium/botrychium.html. Accessed Jan. 2012.

  • Farrar, D. R. and S. J. Popovich. 2012. Ophioglossaceae. Pages 24-35 Colorado Flora: Eastern Slope, fourth edition. W.A. Weber and R.C. Wittmann. University Press of Colorado, Boulder, CO.

  • Farrar, D.R. 2006. June last update. Systematics of moonworts Botrychium subgenus botrychium. Department of Ecology, Evolution and Organismal Biology, Iowa State University, Ames. Online. Available: http://www.public.iastate.edu/~herbarium/botrychium.html (accessed 2007).

  • Stensvold, M.C., D.R. Farrar, and C. Johnson-Groh. 2002. Two new species of moonworts (Botrychium subg. Botrychium) from Alaska. American Fern Journal 92(2):150-160.

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