DISTRIBUTION AND OCCURRENCE
SPECIES: Ceanothus cuneatus | Wedgeleaf Ceanothus 



GENERAL DISTRIBUTION : 
Wedgeleaf ceanothus grows from Mexico northward to California, western
Nevada, Oregon, and into southern Washington [43,48].  It is
well-represented throughout the Coast Ranges, inland mountains of
southern California, and the western Sierra Nevada, but occurs only
rarely on the east slope of the Sierra [55,64].  Fossil evidence
indicates that wedgeleaf ceanothus was much more widely distributed
during drier periods of the Middle Pliocene [15].


ECOSYSTEMS : 
   FRES20  Douglas-fir
   FRES21  Ponderosa pine
   FRES26  Lodgepole pine
   FRES28  Western hardwoods
   FRES34  Chaparral - mountain shrub
   FRES35  Pinyon - juniper


STATES : 
     CA  NV  OR  WA  MEXICO


ADMINISTRATIVE UNITS : 
     KICA  PINN  SAMO  SEQU  WHIS  YOSE


BLM PHYSIOGRAPHIC REGIONS : 
    1  Northern Pacific Border
    2  Cascade Mountains
    3  Southern Pacific Border
    4  Sierra Mountains
    6  Upper Basin and Range
    7  Lower Basin and Range


KUCHLER PLANT ASSOCIATIONS : 
   K005  Mixed conifer forest
   K010  Ponderosa shrub forest
   K011  Western ponderosa forest
   K023  Juniper - pinyon woodland
   K029  California mixed evergreen forest
   K030  California oakwoods
   K031  Oak - juniper woodland
   K033  Chaparral
   K034  Montane chaparral


SAF COVER TYPES : 
   211  White fir
   233  Oregon white oak
   239  Pinyon - juniper
   243  Sierra Nevada mixed conifer
   245  Pacific ponderosa pine
   247  Jeffrey pine
   248  Knobcone pine
   249  Canyon live oak
   255  California coast live oak


SRM (RANGELAND) COVER TYPES : 
NO-ENTRY


HABITAT TYPES AND PLANT COMMUNITIES : 
Wedgeleaf ceanothus occurs as an understory dominant or codominant with
manzanitas (Arctostaphylos spp.) in a number of ponderosa pine (Pinus
ponderosa) communities of the Pacific Northwest.  It has also been
described as an important codominant in certain desert chaparral
communities of southern California with such species as desert ceanothus
(Ceanothus greggii) and chaparral whitethorn (C. leucodermis).
Wedgeleaf ceanothus has been listed as a dominant or codominant species
in the following publications:

Natural vegetation of Oregon and Washington [22]
Ecoclass coding system for the Pacific Northwest plant associations [28]
The vascular plant communities of California [63]

Wedgeleaf ceanothus most commonly occurs in association with the
following species:  California yerba santa (Eriodictyon californicum),
scrub oak (Quercus dumosa), chamise (Adenostoma fasciculatum), juneberry
(Amelanchier pallida), Fremont silktassel (Garrya fremontii), birchleaf
mountain-mahogany (Cercocarpus betuloides), California buckthorn
(Rhamnus californica), black sage (Salvia mellifera), chaparral
whitethorn (Ceanothus leucodermis), desert ceanothus (C. greggii),
deerbrush (C. integerrimus), hoaryleaf ceanothus (C. crassifolius),
skunkbush sumac (Rhus trilobata), and manzanitas (Arctostaphylos spp.)
[7,10,12,15,41,63].


    

Related categories for Species: Ceanothus cuneatus | Wedgeleaf Ceanothus