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Draba cana
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Canescent Draba
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Draba cana

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About Canescent Draba (Draba cana) Draba breweri is a species of flowering plant in the mustard family known by the common names cushion draba, Brewer's draba, and Brewer's Whitlow grass. With Draba cana now considered a variety of this species, it is distributed throughout parts of northern and western North America, including much of Canada and the western United States. The less widespread var. breweri is limited to mountainous California and western Nevada. This is a perennial herb forming small clumps in rocky high mountain areas. Most of the leaves are located in a patch at the base of the stems, with a few higher up on the stems. They are oval in shape and hairy, with each white hair branching into a star shape. The erect inflorescence bears several white mustardlike flowers. The fruit is a twisted, hairy, lance-shaped silique no longer than about a centimeter.
Plant Description
Plant Type
Perennial herb

Flower Color

Native Status
Natural Setting
Elevation ?
7626' - 11972'

Annual Precip. ?
25.1" - 41.5"

Summer Precip. ?
1.63" - 2.32"

Coldest Month ?
20.8° F - 27.8° F

Hottest Month ?
43.4° F - 57.7° F

Humidity ?
1.49 vpd - 15.83 vpd

Landscaping Information
Nursery Availability
Never or Almost Never Available

Other Names
Common Names
Cushion Draba, Brewer's Whitlow Grass, Brewer's Draba

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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