San Diego Management & Monitoring Program


Variegated dudleya
Dudleya variegata


Kingdom Phylum Subphylum Class Order Suborder Family

Current distribution rangewide

Endemic to San Diego County and Baja California [1].


Known Populations in San Diego County

Thirty four known occurrences on Conserved Lands in MUs 2, 3, 4, and 6. Most occurrences are in MU 3, including Marron Valley, Otay Lakes, Otay Mountain, South Crest, Sweetwater Reservoir, Salt Creek, San Miguel Mountain, Proctor Valley, Rancho Jamul, and Goat Mesa. In MU4 occurs in and around Mission Trails Regional Park, Poway, and Sycamore Canyon and in MU6 is found at Black Mountain, Lusardi Creek, Santa Luz, and Santa Fe Valley.


List status

None [2].


Habitat affinities

Associated with clay soils [2] supporting valley and foothill grasslands, open areas of chaparral, cismontane woodland, coastal scrub, and occasionally vernal pools. Habitats near the coast below 600 meters [3].


Taxonomy and genetics

Crassulaceae family [2]. Identification should be regarded with some skepticism because this species is very closely related to, and often confused with, Dudleya multicaulis (many-stemmed dudleya) [3]. Without careful attention to correct taxonomic verification, the wrong taxon might be targeted at the site.


Life history demography

Small herbaceous perennial succulent [1].


Seasonal phenology

Blooms April-June [2].


Threats

Threatened by development, grazing, and possibly nonnative plants [2]. Detrimental edge effects, including recreational activities [3].


Special considerations:

Numbers tend to fluctuate with rainfall [4].


Variegated dudleya sources