Boechera glareosa
Author: Dorn


Dorn's rockcress


Brassicaceae (Mustard Family)

Close up of Boechera glareosa by Robert Dorn
Click image to enlarge.

Taxonomic Comments

New species described in 2003 (Dorn 2003). Accepted by Flora of North America Editorial Committee (2010). Not included in the PLANTS database (2012).

Ranks and Status

Global rank: G1
State rank: S1
Federal protection status: None
State protection status: None

[+] Description and Phenology

Boechera glareosa by Jane Dorn
Click image to enlarge.

General description: Boechera glareosa is a perennial herb with small lavender and white flowers. Stems are 10-20 cm tall, wtih spreading simple or forked hairs toward the base, becoming glabrous upward. The plants have few cauline leaves, and many basal leaves which are oblanceolate to obovate in shape, and up to 10 mm long, The fruit are widely spreading, glabrous, and 2-3 cm long (Dorn 2003).

Look Alikes: Boechera demissa has pendulous fruit with a prominent midnerve in the lower half (B. glareosa fruit are widely spreading and the midnerve is usually lacking or obscure). Boechera gunnisoniana also has fruit with a more prominent midnerve, basal leaf hairs are mostly at least 4-branched, and the stem and stem leaves are pubescent (Dorn 2003).

Phenology: Flowering May to June (Flora of North America 1993+, Colorado Natural Heritage Program 2012).

[+] Habitat

Habitat of Boechera glareosa: not available

Ledges of conglomerate outcrops or on barren gravel pavement from disintegrating conglomerate (Dorn 2003).

Elevation Range: 6,716 - 6,972 feet (2,047 - 2,125 meters)

[+] Distribution

Distribution of Boechera glareosa in Colorado according to mapped land ownership/management boundaries (CNHP 2012, COMaP v9 ).
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Distribution of Boechera glareosa in Colorado
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Colorado endemic: No
Global range: Narrow endemic known only from Summit and Uintah counties, Utah and Moffat County, Colorado (Flora of North America 2010). Northeast Utah and northwest Colorado on the south side of Blue Mountain (Dorn 2003).
State range: Moffat County, Colorado.

[+] Threats and Management Issues

Specific threats are not known for the Colorado location.

[+] References

    • Ackerfield, J. 2012. The Flora of Colorado. Colorado State University Herbarium. 433 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.
    • Colorado Natural Heritage Program. 2010. The Seventh Annual Colorado Rare Plant Symposium: G1 Plants of Colorado. Symposium Minutes. Available on-line http://www.cnhp.colostate.edu/teams/botany.asp#symposia.
    • Colorado Natural Heritage Program. 2012. Biodiversity Tracking and Conservation System. Colorado State University, Fort Collins, CO.
    • Dorn, R. D. 2003. A new species of Boechera (Brassicaceae) from Utah and Colorado. Brittonia 55: 1-3.
    • Flora of North America Editorial Committee, ed. (FNA). 1993+. Flora of North America North of Mexico. Oxford Univ. Press, New York, Oxford.
    • Flora of North America Editorial Committee. 2010. Flora of North America North of Mexico. Vol. 7. Magnoliophyta: Salicaceae to Brassicaceae. Oxford University Press, New York. xxii + 797 pp.
    • Lavender, A.E., M.M. Fink, S.E. Linn, D.M. Theobald. 2011. Colorado Ownership, Management, and Protection v9 Database. Colorado Natural Heritage Program and Geospatial Centroid, Colorado State University, Fort Collins, CO. (30 September).
    • 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.
    • 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.

Last Updated

2012-07-12