Xylorhiza tortifolia (Torr. & A. Gray) Greene
Mojave Woodyaster, Mojave Aster, Desert Aster
Asteraceae (Aster Family)
USDA Symbol: XYTO2
Several grayish, leafy stems, growing from a woody base, with long leafless ends topped by flower heads with many narrow, pale lavender or pale violet rays surrounding a yellow central disk.
The pastel hue of the rays seems unexpectedly delicate in the plants harsh environment, even appearing vivid in the early light of day. A similar species, Big Bend Aster (X. wrightii), is found in western Texas and nearby Mexico. Desert species with a woody base (Xylorhiza means woody base) have been removed from the large and complex genus Machaeranthera, where they were placed for many decades.
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Bloom InformationBloom Color: White , Purple
Bloom Time: Mar , Apr , May , Jun
Bloom Notes: Ray florets seldom white.
DistributionUSA: AZ , CA , NV , UT
Native Distribution: Southwestern Utah south to western Arizona and southeastern California.
Native Habitat: Dry, rocky, desert slopes and washes.
Find Seed or Plants
Find seed sources for this species at the Native Seed Network.
From the National Organizations DirectoryAccording to the species list provided by Affiliate Organizations, this plant is on display at the following locations:
Native Seed Network - Corvallis, OR
BibliographyBibref 995 - Native Landscaping from El Paso to L.A. (2000) Wasowski, S. and A. Wasowski
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Additional resourcesUSDA: Find Xylorhiza tortifolia in USDA Plants
FNA: Find Xylorhiza tortifolia in the Flora of North America (if available)
Google: Search Google for Xylorhiza tortifolia
MetadataRecord Modified: 2012-08-19
Research By: TWC Staff