©The World Botanical Associates Web Page
Prepared by Richard W. Spjut
August 2006, Feb 2013

Adenostoma fasciculata
San Diego Co., near Valley Center, CA
 June 2006.


Adenostoma fasciculata Shrubland Alliance

Ventura Co.: Pine Mt., CA
 June 2012

Adenostoma sparsifolium

Peninsular Ranges, Riverside Co., CA
S&M 14704, 25 Apr 2002


Trees and Shrubs of Kern County Dec 2012)

Adenostoma fasciculatum Hooker & Arnott 1832 var. fasciculatum. Chamise. Shrub with many erect stems arising from an underground reddish burl; bark shredding from stems; leaves short and needle-like in alternate clusters along stems; flowering May–Jul; flowers small (1.5 mm) and numerous in small clusters on a long terminal branched flowering scapes, pyramidal in outline; fruit a diclesium, the outer floral tube becoming hard and enclosing the pericarpium. A common shrub of California chaparral below 5,000 ft, Coast Ranges and western Sierra Nevada, from Shasta Co south to the San Pedro Mártir in Baja California. Type from near Monterey, CA.  Chamise chaparral recognized in MCV2 when >50% relative cover.  Kern Co.: Infrequent, colonies of only a few plants were reported as scarce in chaparral and Douglas oak woodland, from Caliente and Buck Canyons south to the east slope of the extreme southwestern Tehachapi Mountains (Twisselmann); additionally, however, Adenostoma fasciculatum Alliance recognized  on the Tejon Ranch Conservancy (Bicentennial) and may include other species in mixed shrubland species alliances  (Ceanothus vestitus, Quercus john-tuckeri, Rhamnus ilicifolia) on White Wolf and Michener sections (Magney 2010).  Otherwise, rarity of this species in Kern County suggests that its flora has been dominated by woodland vegetation infiltrated by species from the Mohave Desert and from the Sierra Nevada.  Thicket was called a “chamisal among Spanish Californians.