Aletes latilobus
Author: (Rydb.) Mathias

Canyonlands aletes

Apiaceae (Carrot Family)

Close up of Aletes latilobus by Peggy Lyon
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Close up of Aletes latilobus by Gina Glenne
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Close up of Aletes latilobus by Gina Glenne
Click image to enlarge.

Taxonomic Comments

=Lomatium latilobum (Ackerfield 2012).

Ranks and Status

Global rank: G1G2
State rank: S1
Federal protection status: BLM Sensitive
State protection status: None

[+] Description and Phenology

Please see 1997 profile

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).

Look Alikes: Other species in the genus Aletes have narrower leaflets.

Phenology: In Colorado this species is known to flower in April and produce fruits in May (Colorado Natural Heritage Program 2012).

[+] Habitat

Habitat of Aletes latilobus by Peggy Lyon
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Found in canyonlands in pinyon-juniper and desert shrub communities; on sandstone ledges and in sandy soils derived from the Entrada Formation or the contact point of the Wingate and Chinle Formations (Spackman et al. 1997, Ackerfield 2012, Weber and Wittmann 2012).

Elevation Range: 4,541 - 5,807 feet (1,384 - 1,770 meters)

[+] Distribution

Distribution of Aletes latilobus in Colorado.
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Colorado endemic: No
Global range: Colorado Plateau, Navajo Basin; Grand and San Juan Counties, Utah, and Mesa County, Colorado.
State range: Known from Mesa County in Colorado. Estimated range within Colorado is 67 square kilometers (26 square miles), calculated in GIS by the Colorado Natural Heritagae Program in 2008 by drawing a minimum convex polygon around the known occurrences. Also known from Utah.

[+] Threats and Management Issues

Summary results of an analysis of the status of Aletes latilobus based on several ranking factors. This species was concluded to be “effectively conserved”. From Rondeau et al. 2011.
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The primary threat is likely potential trampling by hikers (Rondeau et al. 2011), though impacts are not yet documented or noticeable. It is not known if all of the occurrences are or are not threatened by these activities. The known occurrences are within Colorado National Monument and the BLM Black Ridge Canyon Wilderness Area and Colorado Canyons NCA. This species is relatively well protected by its inaccessible habitat and by its occurrence in Colorado National Monument and Arches National Park (O'Kane 1988).

[+] References

    • Ackerfield, J. 2012. The Flora of Colorado. Colorado State University Herbarium. 433 pp.
    • 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
    • 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.
    • 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.
    • 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.
    • 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.
    • 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: (accessed 2011).
    • 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.
    • Welsh, S.L. 1979. Illustrated manual of proposed endangered and threatened plants of Utah. Brigham Young Univ., Provo, UT. 318 pp.
    • Welsh, S.L., N.D. Atwood, S. Goodrich, and L.C. Higgins (eds.) 1993. A Utah flora. 2nd edition. Brigham Young Univ., Provo, Utah. 986 pp.

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