San Diego Management & Monitoring Program


Summer-holly
Comarostaphylis diversifolia ssp. diversifolia


Kingdom Phylum Subphylum Class Order Suborder Family

Current distribution rangewide

Ranges from southern California to northern Baja California [1].


Known Populations in San Diego County

On Conserved Lands, occurrences found in MU2 (Rancho Mission Park, Soledad Natural Park), MU 3 (Otay Ranch Preserve), MU 4 (Sycamore Canyon and Goodan Ranch), and MU 6 (Sage Hill Preserve, Del Dios Highlands Open Space Preserve, Santa Fe Valley, Lusardi Creek Preserve, Los Penasquitos Canyon Preserve).


List status

None.


Habitat affinities

Grows in chaparral and cismontane woodland communities [1].


Taxonomy and genetics

In the Ericaceae family [1]. There are two subspecies, Comarostaphylis diversilfolia ssp. diversifolia and Comarostaphylis diversifolia ssp. planifola. The former is native to the coastal hills of southern California and Baja Califonia and the latter is native to the Channel Islands of California and the Transverse Ranges north of Los Angeles [2].


Life history demography

A perennial evergreen shrub [1].


Seasonal phenology

Blooms from April through June [1,3].


Pollination seed dispersal

No information.


Threats

Threatened by development, urbanization, and gravel mining [1].


Summer-holly sources