Lomatium latilobum - (Rydb.) Mathias
Canyonlands Lomatium
Synonym(s): Aletes latilobus (Rydb.) Weber
Taxonomic Status: Accepted
Related ITIS Name(s): Lomatium latilobum (Rydb.) Mathias (TSN 29717)
Unique Identifier: ELEMENT_GLOBAL.2.153286
Element Code: PDAPI1B100
Informal Taxonomy: Plants, Vascular - Flowering Plants - Carrot Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Dicotyledoneae Apiales Apiaceae Lomatium
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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: Lomatium latilobum
Conservation Status
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NatureServe Status

Global Status: G1G2
Global Status Last Reviewed: 08Sep2011
Global Status Last Changed: 08Sep2011
Rounded Global Status: G1 - Critically Imperiled
Reasons: Endemic to Grand and San Juan counties, Utah and adjacent Mesa County, Colorado. There are approximately 12 to 17 extant occurrences. Threats to the species are high as this species is vulnerable to trampling by hikers and mountain bikes, and occurs in high-use hiking and mountain biking areas.
Nation: United States
National Status: N1N2

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 Colorado (S1), Utah (S1)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: Colorado Plateau, Navajo Basin; Grand and San Juan Counties, Utah, and Mesa County, Colorado.

Area of Occupancy: 3-125 4-km2 grid cells
Area of Occupancy Comments: Approximately 16 4-sq km grid cells (EO data in the NatureServe central database as of July 2011).

Number of Occurrences: 6 - 20
Number of Occurrences Comments: Twelve to seventeen occurrences: 9-14 in Utah, 3 in Colorado. Several occurrences have as few as 3 total individuals. Colorado occurrences cover a 4 x 5 mile area. In addition to the three extant Colorado occurrences, there are two collection-based historic records.

Population Size Comments: As of 2009, last observed population data for occurrences indicates a total of approximately 5000 individuals (EO data in the NatureServe central database as of July 2011).

Overall Threat Impact: Very high - high
Overall Threat Impact Comments: Heightened interest in hiking the "fin" areas of Arches National Park and Behind the Rocks along with the influxes of mountain-bikers to the area has resulted in increased trampling and disturbance of the plant and its habitat. Also, the southern portion Behind the Rocks is apparently used heavily by cattle. May also be threated by exotic plants. Exotic plants present at one site include Bromus tectorum and Lepidium perfoliatum (EO data in the NatureServe central database as of July 2011).

Short-term Trend Comments:

Intrinsic Vulnerability Comments: Plants are easily uprooted and do not survive when their habitat is disturbed.

Other NatureServe Conservation Status Information

Distribution
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Global Range: Colorado Plateau, Navajo Basin; Grand and San Juan Counties, Utah, and Mesa County, Colorado.

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 CO, UT

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
CO Mesa (08077)
UT Grand (49019), San Juan (49037)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
14 Colorado headwaters-Plateau (14010005)+, Upper Colorado-Kane Springs (14030005)+, Lower Green (14060008)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Basic Description: A perennial herb, 1-3 dm tall, with umbrella-like clusters of yellow flowers blooming on stalks that rise above a clump of deeply dissected leaves. Flowers in the spring. Plants have a strong lemony-licorice scent.
General Description: Perennial plants over 10 cm tall.  Plants form broad mats with numberous short caudices.  Plants are acaulescent; leaves are all basal.  Leaves are once pinnately compound with<br>lanceolate leaflets 5-40 mm long and over 5 mm wide.  Flowers are yellow.  Involucel bractlets are conspicuous and longer than the flowers, 5-10 mm in length.  Strong lemony or anise scent (Colorado Native Plant Society 1997, Spackman et al. 1997, Ackerfield 2012, Weber and Wittmann 2012).
Technical Description: Acaulescent perennial from a branched woody caudex clothed with persistent leaf bases; leaves pinnate with 3-4 pairs of leaflets; leaflets lanceolate to elliptic, 2-12 mm wide, some always over 5 mm wide; inflorescence an umbel of yellow flowers; fruit 8-12 mm long, 3-7 mm wide; blooms April (to June).
Terrestrial Habitat(s): Bare rock/talus/scree, Desert, Shrubland/chaparral
Habitat Comments: On Entrada Sandstone and Navajo Sandstone, between fins and in slot canyons, in sandy soil deposits and in rocky crevices. Surrounding plant communities are desert shrub, pinyon-juniper, or ponderosa pine-mountain brush. 1237-2207 m elevation.
Economic Attributes
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Economically Important Genus: Y
Management Summary
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Stewardship Overview: Prevent impacts from hikers and mountain-bikers. Consider fencing some areas and/or using educational signs. Monitor sites for exotic plant invasion.
Population/Occurrence Delineation
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Minimum Criteria for an Occurrence: Any naturally occurring population.
Separation Distance for Unsuitable Habitat: 1.61 km
Separation Distance for Suitable Habitat: 3.22 km
Separation Justification: The rationale for this large a separation distance across suitable but apparently unoccupied habitat is that it is likely additional research will find this habitat to be occupied. It can often be assumed that apparently unconnected populations will eventually be found to be more closely connected; these are best regarded as suboccurrences.
Date: 11Apr2000
Author: Spackman, S. and D. Anderson
Population/Occurrence Viability
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Excellent Viability: Size: 1000 or more individuals. Condition: occurrences with an excellent likelihood of long-term viability (various age classes and evidence of flowering and fruiting are represented indicating that the reproductive mechanisms are intact). This occurrence should be in a high-quality site (i.e. less than 1% cover exotic plant species and/or no significant human disturbances). Landscape Context: the occurrence is surrounded by an area that is unfragmented and includes the ecological processes needed to sustain this species.
Good Viability: Size: 200 or more individuals. Condition: the occurrence should have a good likelihood of long-term viability (various age classes and evidence of flowering and fruiting are represented indicating that the reproductive mechanisms are intact) with little human disturbance. If exotic species are present, they comprise less than 10% of the total ground cover. Landscape Context: the surrounding landscape should contain the ecological processes needed to sustain the occurrence but may be fragmented and/or impacted by humans.
Fair Viability: Size: 50 to 200 individuals. Condition: The occurrence may be less productive than the above situations, but is still viable (with various age classes and evidence of flowering and fruiting indicating that the reproductive mechanisms are intact). The occupied habitat is somewhat degraded (exotic plant species make up between 10-50% of the total ground cover and/or there is a moderate level of human disturbance). Landscape Context: there may be significant human disturbance, but the ecological processes needed to sustain the species are still intact.
Poor Viability: Size: Less than 50 individuals. Condition: little or no evidence of successful reproduction is observed (poor seedling recruitment, no flowering or fruiting observed, or poor age class distribution). Exotic plant species make up greater than 50% of the total ground cover, and/or there is a significant level of human disturbance. Landscape context: the surrounding area is fragmented with many ecological processes no longer intact. The occurrence has a low probability of long-term persistence due to inbreeding depression, natural stochastic events, and its intrinsic vulnerability to human impacts.
Justification: A Rank: Although there is very little information regarding population size or quality for most occurrences of this species, the largest occurrence for which a population size estimate is available reports approximately 1000 plants. When more information is acquired, the eospecs should be reassessed.

C Rank: EOs not meeting "C"-rank criteria are likely to have a very high probability of inbreeding depression and extirpation due to natural stochastic processes and/or occur in degraded habitat with low long-term potential for survival.

Key for Ranking Species Element Occurrences Using the Generic Approach (2008).
Date: 11Apr2000
Author: Spackman, S. and D. Anderson
Notes: COHP
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: 14Sep2011
NatureServe Conservation Status Factors Author: S. Spackman (1994); B. Franklin (1995); L. Morse and M.J. Lyon (1996), rev. Franklin (1996), rev. Handwerk, J. (2006), rev. A. Tomaino (2011)
Management Information Edition Date: 08Sep2011
Management Information Edition Author: Tomaino, A.
Element Ecology & Life History Edition Date: 16Jul2013
Element Ecology & Life History Author(s): Susan Panjabi

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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  • Ackerfield, J. 2012. The Flora of Colorado. Colorado State University Herbarium. 433 pp.


  • Ackerfield, J. 2015. Flora of Colorado. Botanical Research Institute of Texas, Fort Worth, TX. 818 pp.

  • Barneby, R. C. 1947. Distributional notes and minor novelties. Leafl. W. Bot. V(4):61-66.

  • Colorado Native Plant Society. 1989. Rare plants of Colorado. Rocky Mountain Nature Association, Colorado Native Plant Society, Estes Park, Colorado. 73 pp.

  • Colorado Natural Heritage Program. 2005. The Second Annual Colorado Rare Plant Symposium: G1 Plants of Colorado. Symposium Minutes. Available on-line http://www.cnhp.colostate.edu/teams/botany.asp#symposia.

  • Franklin, M.A. 1996. Field survey for Lomatium latilobum (Rydb.) Mathias in the Grand Resource Area, Grand and San Juan counties, Utah. Final report for 1995 Challenge Cost Share Project, Utah Dept. Natural Resources, Utah Natural Heritage Program, and Bureau of Land Management. Unpublished document on file Utah Natural Heritage Program, Salt Lake City. 11pp + appendices.

  • Heil, K. D., D. Hyder, R. Melton, and R. Fleming. 1991. The threatened/endangered flora of the San Juan Resource Area. Contract #J910C10022. Pp. 1-36 + appendices.

  • Heil, K. D., D. Hyder, R. Melton, and R. Fleming. 1991. The threatened/endangered flora of the San Juan Resource Area. Contract #J910C10022. Pp. 1-36 + appendices.

  • Heil, K. D., L. Floyd-Hanna, L. Reeves, D. Hyder, and R. Fleming. 1993. Composition, distribution, abundance and habitat requirements of endangered, threatened, and rare plant species in the Southeast Utah Group of National Parks. Prepared for [U.S.] National Park Service [by] San Juan College[,] Farmington, New Mexico. 96 pp.

  • Heil, K. D., L. Floyd-Hanna, L. Reeves, D. Hyder, and R. Fleming. 1993. Composition, distribution, abundance and habitat requirements of endangered, threatened, and rare plant species in the Southeast Utah Group of National Parks. Prepared for [U.S.] National Park Service [by] San Juan College[,] Farmington, New Mexico. 96 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.

  • Mathias, M.E. 1938. A revision of the genus Lomatium. Ann. Missouri Bot. Gard. 25:225-297.

  • Neely, B., S. Panjabi, E. Lane, P. Lewis, C. Dawson, A. Kratz, B. Kurzel, T. Hogan, J. Handwerk, S. Krishnan, J. Neale, and N. Ripley. 2009. Colorado Rare Plant Conservation Strategy, Developed by the Colorado Rare Plant conservation Initiative. The Nature Conservancy, Boulder, Colorado, 117 pp.

  • O'Kane, S. L. 1988. Colorado's Rare Flora. Great Basin Naturalist. 48(4):434-484.

  • Rondeau, R., K. Decker, J. Handwerk, J. Siemers, L. Grunau, and C. Pague. 2011. The state of Colorado's biodiversity 2011. Prepared for The Nature Conservancy. Colorado Natural Heritage Program, Colorado State University, Fort Collins, Colorado.

  • Rydberg, P. A. 1913. Studies on the Rocky Mountain Flora -- XXVIII. Bull. Torrey Bot. Club 40:43-74.

  • Sivinski, R. and K. Lightfoot, eds. 1993. Southwestern Rare and Endangered Plants. Proceedings of the Southern Rare and Endangered Plant Conference. New Mexico Forestry and Resources Conservation Division, Energy, Minerals, and Natural Resources Department, Sante Fe. 390 pp.

  • Spackman, S., B. Jennings, J. Coles, C. Dawson, M. Minton, A. Kratz, and C. Spurrier. 1997. Colorado rare plant field guide. Prepared for Bureau of Land Management, U.S. Forest Service and U.S. Fish and Wildlife Service by Colorado Natural Heritage Program.

  • Spahr, R., L. Armstrong, D. Atwood, and M. Rath. 1991. Threatened, endangered, and sensitive species of the Intermountain Region. U.S. Forest Service, Intermountain Region, Ogden, UT.

  • Thompson, B. 1991. Information on sensitive species of the Manti La-Sal National Forest and elsewhere.

  • USDA, NRCS. 2013. The PLANTS Database. National Plant Data Team, Greensboro, NC 27401-4901 USA.

  • Utah Native Plant Society. 2003-2011. Utah rare plant guide. A.J. Frates editor/coordinator. Salt Lake City, UT. Utah Native Plant Society. Online. Available: http://www.utahrareplants.org (accessed 2011).

  • Weber, W. A. 1984. New names and combinations, principally in the Rocky Mountain flora--IV. Phytologia 55: 1-11.

  • Weber, W. A. and R. C. Wittmann. 2012. Colorado Flora, Western Slope, A Field Guide to the Vascular Plants, Fourth Edition. Boulder, Colorado. 532 pp.

  • Weber, W.A., and R.C. Wittmann. 1996b. Colorado flora: Western slope. Univ. Press of Colorado, Niwot, Colorado. 496 pp.

  • Weber, W.A., and R.C. Wittmann. 2012a. Colorado Flora, Eastern Slope, a field guide to the vascular plants, fourth edition. University of Colorado Press. Boulder, Colorado. 555 pp.

  • Welsh, S. L. 1978. Endangered and threatened plants of Utah: a reevaluation. Great Basin Naturalist 38(1): 1-18.

  • Welsh, S. L. 1978. Status report: Lomatium latilobum. Unpublished report prepared for the U.S. Fish and Wildlife Service.

  • Welsh, S. L. 1978d. Status report: Lomatium latilobum. Unpublished report prepared for the U.S. Fish and Wildlife Service.

  • Welsh, S. L. 1983. Collection data - rare plants of Utah. Prepared by Endangered Plant Studies, Inc. 129 North 1000 East, Orem, UT 84057. Report from Larry England, US Fish and Wildlife Service, T & E Species.

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