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Brewer's Spineflower Back to Plant Page
Chorizanthe breweri

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About Brewer's Spineflower (Chorizanthe breweri) Chorizanthe breweri is a rare species of flowering plant in the buckwheat family known by the common names San Luis Obispo spineflower and Brewer's spineflower. It is endemic to California, where it is known from about twenty occurrences in the Central Coast Ranges of San Luis Obispo and far southern Monterey Counties. It grows in the chaparral and woodlands of the range, generally on serpentine soils. This small plant produces decumbent stems extending along the ground and sometimes growing upright to a maximum length of about half a meter. The herbage is mostly reddish in color and somewhat hairy. The inflorescence is a cluster of flowers, each surrounded by six hairy reddish bracts with hooked tips. The flower itself is only about 3 millimeters wide and is white to red and hairy.
Plant Description
Plant Type
Annual herb

Max. Height
1.2 - 7.9 in (3 - 20.1 cm)

Flower Color

Native Status
Natural Setting
Elevation ?
182' - 3725'

Annual Precip. ?
19.0" - 66.4"

Summer Precip. ?
0.22" - 0.51"

Coldest Month ?
42.1° F - 50.1° F

Hottest Month ?
64.5° F - 75.0° F

Humidity ?
0.65 vpd - 21.74 vpd

Landscaping Information
Nursery Availability
Never or Almost Never Available

Other Names
Common Names
San Luis Obispo Spineflower

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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