Regularity: Regularly occurring
Localities documented in Tropicos sources
United States (North America)
Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.
- Anonymous. 1986. List-Based Rec., Soil Conserv. Serv., U.S.D.A. Database of the U.S.D.A., Beltsville. http://www.tropicos.org/Reference/1103
- Munz, P. A. & D. D. Keck. 1959. Cal. Fl. 1–1681. University of California Press, Berkeley. http://www.tropicos.org/Reference/1717
- Munz, P. A. 1974. Fl. S. Calif. 1–1086. University of California Press, Berkeley. http://www.tropicos.org/Reference/1719
Global Range: Reported from Riverside and San Diego Counties, California and Baja California, Mexico.
Comments: Closed cone coniferous forest, chaparral.
Number of Occurrences
Note: For many non-migratory species, occurrences are roughly equivalent to populations.
Estimated Number of Occurrences: 6 - 20
Comments: Approximately 6-20 element occurrences.
Molecular Biology and Genetics
Barcode data: Ceanothus cyaneus
Statistics of barcoding coverage: Ceanothus cyaneus
Public Records: 1
Specimens with Barcodes: 1
Species With Barcodes: 1
National NatureServe Conservation Status
Rounded National Status Rank: N2 - Imperiled
NatureServe Conservation Status
Rounded Global Status Rank: G2 - Imperiled
Reasons: Ceanothus cyaneus is known from approximately 6-20 extant occurrences in two counties in California and in Baja California, Mexico. It is unknown if any are protected. Development is a threat to this taxon.
Comments: Development is the major threat (CNDDB 2003, CNPS 2001).
Ceanothus cyaneus is a species of flowering shrub known by the common names San Diego buckbrush and Lakeside ceanothus. This Ceanothus is found in the mountains of San Diego County, California, and its range probably extends just into Baja California.
This is a tall, erect shrub which may approach 5 meters in height. Its spreading branches are gray-green, with the younger twigs a light greenish-brown. The evergreen leaves may be serrated and toothed with glandular knobs, or they may be smooth along the edges. The underside is a lighter green than the upper surface.
The inflorescence may exceed 15 centimeters in length, bearing many bunches of flowers along the length of a greenish stalk. The long flowers are bright blue with protruding yellow anthers. The capsule fruits are about 4 millimeters long.