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Xylorhiza cognata
About Mecca-aster (Xylorhiza cognata) 0 Nurseries Carry This Plant Xylorhiza cognata is a rare species of flowering plant in the aster family known by the common names Mecca-aster and Mecca woodyaster. It is endemic to Riverside County, California, where it is known only from the Mecca Hills and Indio Hills of the Sonoran Desert. It grows in scrubby habitat in dry desert canyons. It is a shrub with branching stems that may approach 1. 5 meters in length. They are hairy and glandular when new and lose their hairs with age. The leaves are lance-shaped to oval with smooth, toothed, or spiny edges. The inflorescence is a solitary flower head with up to 30 or more lavender or pale blue ray florets, each of which may measure over 2 centimeters in length. Flowering begins in January. The fruit is an achene which may be over a centimeter long, including its pappus of bristles. Threats to this species include vehicles in its habitat.
Plant Description
Plant Type
Plant Type
Perennial herb

4.9 ft tall

Flower Color
Flower Color
Lavender, Blue

Wildlife Supported

Butterflies & moths hosted ( 1 likely * ) SHOW ALL

Landscaping Information
Common uses
Common uses
Butterfly Gardens, Bee Gardens

Natural Setting
Annual Precipitation: 3.2" - 6.1", Summer Precipitation: 0.42" - 1.25", Coldest Month: 49.6" - 58.6", Hottest Month: 78.0" - 88.4", Humidity: 5.88" - 39.38", Elevation: 42" - 2962"

Alternative Names
Common Names: Mecca Woodyaster

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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