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Boechera cobrensis
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Masonic Rockcress
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Boechera cobrensis
  

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About Masonic Rockcress (Boechera cobrensis) Boechera cobrensis (syn. Arabis cobrensis) is a species of flowering plant in the mustard family known by the common names Masonic rockcress and sagebrush rockcress. It is native to the western United States from eastern California to Wyoming, where it is found in sandy habitat, especially sagebrush. This is a perennial herb growing several erect, slender stems to heights near half a meter from a branching caudex. The plant forms a narrow clump with a base of narrow, linear, densely hairy leaves up to 5 centimeters long. There are also a few slightly shorter leaves clasping the stems at intervals. The top of each stem is occupied by an inflorescence of small, nodding flowers with dull yellowish sepals and white petals. The flowers give way to fruits which are narrow, straight siliques up to 4 centimeters long containing winged seeds.
Plant Description
Plant Type
Perennial herb

Max. Height
1.6 ft (0.49 m)

Flower Color
Pink, Yellow, White

Native Status
Natural Setting
Elevation ?
6554' - 11108'

Annual Precip. ?
11.2" - 25.2"

Summer Precip. ?
0.90" - 1.97"

Coldest Month ?
24.1° F - 32.8° F

Hottest Month ?
47.8° F - 62.1° F

Humidity ?
1.05 vpd - 18.64 vpd

Landscaping Information
Nursery Availability
Never or Almost Never Available

Other Names
Common Names
Sagebrush Rockcress


Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora

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