Mimulus eastwoodiae
Author: Rydb.

Eastwood monkey-flower

Scrophulariaceae (Figwort Family)

Close up of Mimulus eastwoodiae by Lori Brummer.
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Close up of Mimulus eastwoodiae by Lori Brummer.
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Taxonomic Comments

Ackerfield (2012) places the genus Mimulus in the family Phrymaceae (the Lopseen Family).

Ranks and Status

Global rank: G3G4
State rank: S1S2
Federal protection status: BLM Sensitive
State protection status: None

[+] Description and Phenology

Mimulus eastwoodiae by Bev Coogan.
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Mimulus eastwoodiae by Anneta Duveen.
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General description: Stoloniferous perennial, stems 5-30 cm long. New fertile plants are produced wherever roots take hold. Plants are climbing to pendulous from ceilings of overhanging cliffs, gladular-puberulent, sometimes viscid-villous. Leaves are sessile, fan-shaped, corsely toothed and palmately 3-5 veined. Corolla scarlet to orangish-red, four stamens, and calyx strongly 5-angled (Spackman et al. 1997, Culver and Lemly 2013).

Look Alikes: Mimulus lewisii has an erect growth form, and pink-purple flowers (Spackman et al. 1997).

Phenology: Flowers July-September (Ackerfield 2015, Spackman et al. 1997).

[+] Habitat

Close up of Mimulus eastwoodiae by Lori Brummer.
Click image to enlarge.

Close up of Mimulus eastwoodiae by Lori Brummer.
Click image to enlarge.

Grows in moist crevices of perpendicular or overhanging sandstone canyon walls. The moist seeps support a lush association of plants, unusual in the dry, desert country. Associated species are Smilacina stellata, Epipactis gigantea, Erigeron kachinensis, Aquilegia micrantha (Spackman et al. 1997, Colorado Native Plant Society 1997, Culver and Lemly 2013, Ackerfield 2015). 


Elevation Range: 4,659 - 6,417 feet (1,420 - 1,956 meters)

[+] Distribution

Distribution of Mimulus eastwoodiae in Colorado according to mapped land ownership/management boundaries (CNHP 2015, COMaP v9).
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Distribution of Mimulus eastwoodiae in Colorado.
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Colorado endemic: No
Global range: Endemic to the Canyonlands of southeastern Utah and adjacent Colorado, Arizona, and New Mexico (Cronquist et al. 1984, Heil et al. 2002). The report of M. eastwoodiae from Nevada was based on misidentified M. cardinalis (Cronquist et al. 1984). Total range extent appears to be approximately 60,000 square km.
State range: In Colorado, known from Delta, Mesa, Montrose, Montezuma and San Miguel counties (Ackerfield 2015).


[+] Threats and Management Issues

Primary threat is the alteration of hydrological setting that supports the habitat.

[+] References

    • Ackerfield, J. 2015. Flora of Colorado. Brit Press, Botanical Research Institute of Texas, Fort Worth, TX. 818 pp.
    • Cronquist, A., A.H. Holmgren, N.H. Holmgren, J.L. Reveal, and P.K. Holmgren. 1984. Intermountain Flora: Vascular Plants of the Intermountain West, U.S.A. Vol. 4, Subclass Asteridae (except Asteraceae). New York Botanical Garden, Bronx. 573 pp.
    • Culver, D.R. and J.M. Lemly. 2013. Field Guide to Colorado's Wetland Plants; Identification, Ecology and Conservation. Colorado Natural Heritage Program, Colorado State University, Fort Collins, 694 pp.
    • Heil, K.D., S.L. O'Kane, Jr., and A. Clifford. 2002. Additions to the Flora of New Mexico from the San Juan Basin Flora Project. New Mexico Botanist 24: 1-4. Online. Available: http://web.nmsu.edu/~kallred/herbweb/24pdf.pdf (Accessed 2008).
    • 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.
    • Rocky Mountain Society of Botanical Artists. 2009. RARE Imperiled Plants of Colorado, a traveling art exhibition. Exhibition catalogue developed by the Denver Botanic Gardens and Steamboat Art Museum.
    • Rydberg. 1913. Mimulus eastwoodiae. In: Studies on the Rocky Mountain Flora. Bulletin of the Torrey Botany Club Vol. 40:483-484.
    • Schneider, A. 2013. Wildflowers, Ferns, and Trees of the Four Corners Regions of Colorado, New Mexico, Arizona, and Utah. Accessed on-line at http://www.swcoloradowildflowers.com.
    • 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.
    • The Colorado Native Plant Society. 1997. Rare Plants of Colorado, second edition. Falcon Press Publishing Co.,Inc. Helena, Montana. 105pp.
    • USDA, NRCS. 2013. The PLANTS Database. National Plant Data Team, Greensboro, NC 27401-4901 USA.
    • 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., N.D. Atwood, S. Goodrich and L.C. Higgins. (Eds.) 2003. A Utah Flora. 3rd edition. Brigham Young University, Provo, Utah, U.S.A. 912 pp.

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