DISTRIBUTION AND OCCURRENCE
SPECIES: Taxus brevifolia | Pacific Yew 



GENERAL DISTRIBUTION : 
Pacific yew grows along the Pacific Coast of southeastern Alaska
southward through western British Columbia to central California
[46,55].  In the Rocky Mountain region, it occurs from southeastern
British Columbia through northwestern Montana and northern Idaho into
eastern Washington and Oregon [46].

Dense stands of shrubby Pacific yew dominate approximately 40,000 acres
(16,000 ha) in the South Fork of the Clearwater Drainage of
north-central Idaho [14].  This plant has been essentially eliminated
from another 9,880 acres (4,000 ha) by timber harvest [14].


ECOSYSTEMS : 
   FRES20  Douglas-fir
   FRES21  Ponderosa pine
   FRES22  Western white pine
   FRES23  Fir - spruce
   FRES24  Hemlock - Sitka spruce
   FRES25  Larch
   FRES27  Redwood


STATES : 
     AK  CA  ID  MT  OR  WA  BC


ADMINISTRATIVE UNITS : 
     CODA  CRLA  GLAC  LAVO  MORA  NOCA
     OLYM  PORE  REDW  SAJH  WHIS  YOSE


BLM PHYSIOGRAPHIC REGIONS : 
    1  Northern Pacific Border
    2  Cascade Mountains
    4  Sierra Mountains
    8  Northern Rocky Mountains


KUCHLER PLANT ASSOCIATIONS : 
   K001  Spruce - cedar - hemlock forest
   K002  Cedar - hemlock - Douglas-fir forest
   K003  Silver fir - Douglas-fir forest
   K005  Mixed conifer forest
   K006  Redwood forest
   K007  Red fir forest
   K012  Douglas-fir forest
   K013  Cedar - hemlock - pine forest
   K014  Grand fir - Douglas-fir forest
   K015  Western spruce - fir forest
   K029  California mixed evergreen forest


SAF COVER TYPES : 
   206  Engelmann spruce - subalpine fir
   207  Red fir
   211  White fir
   212  Western larch
   213  Grand fir
   215  Western white pine


SRM (RANGELAND) COVER TYPES : 
NO-ENTRY


HABITAT TYPES AND PLANT COMMUNITIES : 
Pacific yew grows as an understory dominant or codominant in a number of
coniferous forests of the Pacific Northwest and northern Rocky
Mountains.  Overstory dominants include grand fir (Abies grandis), white
fir (Abies concolor), and western hemlock (Tsuga heterophylla).  Vine
maple (Acer circinatum), queencup beadlily (Clintonia uniflora), and
wild ginger (Asarum caudatum) are common codominants.  In parts of
northern Idaho, Pacific yew grows as a climax dominant which forms a
nearly contiguous shrublike overstory.  It is listed as an indicator or
dominant in the following habitat type (hts), community type (cts), and
plant association (pas) classification schemes:

Area                   Classification          Authority

CA                     mixed evergreen cts     Sawyer and others 1977
CA, OR: Siskiyou Mtn.  forest pas              Atzet and Wheeler 1984
  Province
CA, OR: e Siskiyous    forest cts              Waring 1969
n ID                   forest cts, hts         Cooper and others 1987
OR: Abott Creek RNA    forest cts              Mitchell and Moir 1976
s OR: Cascade Mtns.    forest pas              Atzet and McCrimmon 1990
OR, ID: Wallowa-       general veg. pas        Johnson and Simon 1987
  Whitman NF                             
n Rocky Mountains      Pacific yew cts         Crawford and Johnson 1985

Related categories for Species: Taxus brevifolia | Pacific Yew