San Diego Management & Monitoring Program


Blochman's dudleya
Dudleya blochmaniae


Kingdom Phylum Subphylum Class Order Suborder Family

Current distribution rangewide

From the central coast of California to southern San Diego, and into northern Baja California, Mexico [1, 2, 3].


Known Populations in San Diego County

Three occurrences on Conserved Lands in MUs 3 (Border Field State Park) and 6 (Carlsbad Oaks North Habitat Conservation Area).


List status

None [3].


Habitat affinities

Rocky, often clay or serpentine soils [3]. Primary habitat associations are coastal bluff scrub, chaparral, coastal scrub, and valley and foothill grassland. Elevation range is 5-450 meters.


Taxonomy and genetics

Crassulaceae family [3]. Northern and southern populations are genetically distinct.


Life history demography

Herbaceous perennial [3].


Seasonal phenology

Bloom period is April-June [2].


Threats

Threatened by grazing, trampling, development, erosion, and non-native plants [3].


Special considerations:

Hybrids with Dudleya edulis suspected [2].


Blochman's dudleya sources