DISTRIBUTION AND OCCURRENCE
SPECIES: Umbellularia californica | California Bay 



GENERAL DISTRIBUTION : 
California bay occurs in the Klamath, Siskiyou, and Coast Ranges from
Douglas County, Oregon south to San Diego County, California, and on the
western slope of the Sierra Nevada from Shasta County south to Kern
County.  It is found along drainages in the Central Valley, California
[16,23,31,48].  Umbellularia californica var. fresnensis occurs in
Fresno County, California [9].


ECOSYSTEMS : 
   FRES20  Douglas-fir
   FRES21  Ponderosa pine
   FRES24  Hemlock - Sitka spruce
   FRES26  Lodgepole pine
   FRES27  Redwood
   FRES28  Western hardwoods
   FRES34  Chaparral - mountain shrub
   FRES42  Annual grasslands


STATES : 
     CA  OR


ADMINISTRATIVE UNITS : 
     KICA  LAVO  PORE  REDW  MUWO  SAMO
     SEQU  WHIS  YOSE


BLM PHYSIOGRAPHIC REGIONS : 
   1  Northern Pacific Border
   3  Southern Pacific Border
   4  Sierra Mountains


KUCHLER PLANT ASSOCIATIONS : 
   K001  Spruce - cedar - hemlock forest
   K002  Cedar - hemlock - Douglas-fir forest
   K005  Mixed conifer forest
   K006  Redwood forest
   K008  Lodgepole pine - subalpine forest
   K009  Pine - cypress forest
   K010  Ponderosa shrub forest
   K011  Western ponderosa forest
   K012  Douglas-fir forest
   K026  Oregon oakwoods
   K028  Mosaic of K002 and K026
   K029  California mixed evergreen forest
   K030  California oakwoods
   K033  Chaparral
   K034  Montane chaparral
   K048  California steppe


SAF COVER TYPES : 
   218  Lodgepole pine
   221  Red alder
   223  Sitka spruce
   224  Western hemlock
   225  Western hemlock - Stika spruce
   226  Coastal true fir - hemlock
   229  Pacific Douglas-fir
   230  Douglas-fir - western hemlock
   231  Port-Orford-cedar
   232  Redwood
   233  Oregon white oak
   234  Douglas-fir - tanoak - Pacific madrone
   243  Sierra Nevada mixed conifer
   244  Pacific ponderosa pine - Douglas-fir
   245  Pacific ponderosa pine
   246  California black oak
   247  Jeffrey pine
   248  Knobcone pine
   249  Canyon live oak
   250  Blue oak - Digger pine
   255  California coast live oak


SRM (RANGELAND) COVER TYPES : 
NO-ENTRY


HABITAT TYPES AND PLANT COMMUNITIES : 
California bay is sometimes codominant or dominant in various hardwood
forests.  Pure stands are rare, but there are a few California bay
forests in the Coast Ranges and in Tehema County, California [7,11,15].
The tree also occurs in various coniferous forests, where it is a
codominant or dominant in the subcanopy or is an understory associate.
Published classifications listing California bay as codominant or
dominant in community types (cts), ecoassociation types (eco), plant
associations (pas), or vegetation types (vts) are as follows:

AREA                            CLASSIFICATION            AUTHORITY
  CA: outer Coast Ranges        Ca. bay forest cts        Holland 1986
  CA: Coast Ranges              Ca. hardwoods eco         Allen & others 1991
 nCA: Klamath; N.Coast Ranges   cismontane woodland cts   Holland 1986
 nCA: Muir Woods NM             redwood forest vts        McBride & Jacobs 1980
 sCA: S.Coast Ranges            riparian pas              Paysen & others 1980
 sCA: Santa Ana Mts.            canyon woodlands cts      Vogl 1976
swOR: Siskiyou NF               mixed evergreen cts       Sawyer & others 1977
swOR: Siskiyou; Klamath         tanoak-Ca. laurel pas     Atzet & Wheeler 1984
      Ranges

Related categories for Species: Umbellularia californica | California Bay