DISTRIBUTION AND OCCURRENCE
SPECIES: Toxicodendron rydbergii | Western Poison-Ivy 



GENERAL DISTRIBUTION : 
Western poison-ivy is the most northerly occurring taxa within the
Toxicodendron complex, ranging across southern Canada from British
Columbia to Nova Scotia [7].  This species is distributed throughout the
northern United States from central Washington and Oregon to New
England, extending southward to Illinois, Iowa, Nebraska, Kansas, Texas,
Arizona, and New Mexico [9,21].  Disjunct populations also occur on the
mountaintops of the central Appalachians from Pennsylvania to Virginia [7].


ECOSYSTEMS : 
   FRES10  White - red - jack pine
   FRES11  Spruce - fir
   FRES15  Oak - hickory
   FRES17  Elm - ash - cottonwood
   FRES18  Maple - beech - birch
   FRES20  Douglas-fir
   FRES21  Ponderosa pine
   FRES23  Fir - spruce
   FRES28  Western hardwoods
   FRES29  Sagebrush
   FRES34  Chaparral - mountain shrub
   FRES35  Pinyon - juniper
   FRES36  Mountain grasslands
   FRES38  Plains grasslands
   FRES39  Prairie
   FRES44  Alpine


STATES : 
     AZ  CO  ID  IL  IN  IA  KS  ME  MA  MI
     MN  MT  NE  NH  NM  NY  ND  OH  OR  PA
     SD  TX  UT  VT  VA  WA  WV  WI  WY  AB
     BC  MB  NB  NS  ON  PE  PQ  SK


ADMINISTRATIVE UNITS : 
     ARCH  BICA  BLCA  CANY  CARE  COLM
     CODA  DETO  GLAC  GLCA  GRCA  GRTE
     GUIS  JELA  JODA  MOCA  MORU  NATR
     NABR  PIPE  ROMO  SCBL  THRO  TICA
     WICR  WICA  YELL  ZION


BLM PHYSIOGRAPHIC REGIONS : 
    1  Northern Pacific Border
    2  Cascade Mountains
    5  Columbia Plateau
    6  Upper Basin and Range
    8  Northern Rocky Mountains
    9  Middle Rocky Mountains
   10  Wyoming Basin
   11  Southern Rocky Mountains
   12  Colorado Plateau
   13  Rocky Mountain Piedmont
   14  Great Plains 
   15  Black Hills Uplift
   16  Upper Missouri Basin and Broken Lands


KUCHLER PLANT ASSOCIATIONS : 
   K012  Douglas-fir forest
   K016  Eastern ponderosa forest
   K017  Black Hills pine forest
   K018  Pine - Douglas-fir forest
   K019  Arizona pine forest
   K020  Spruce - fir - Douglas-fir forest
   K023  Juniper - pinyon woodland
   K037  Mountain mahogany - oak scrub
   K038  Great Basin sagebrush
   K051  Sagebrush steppe
   K055  Sagebrush steppe
   K066  Wheatgrass - needlegrass
   K067  Wheatgrass - bluestem - needlegrass
   K070  Sandsage - bluestem prairie
   K074  Bluestem prairie
   K081  Oak savanna
   K093  Great Lakes spruce - fir forest
   K095  Great Lakes pine forest
   K096  Northeastern spruce -fir forest
   K098  Northern floodplain forest
   K099  Maple - basswood forest
   K100  Oak - hickory forest
   K101  Elm - ash forest
   K102  Beech - maple forest
   K106  Northern hardwoods
   K107  Northern hardwoods - fir forest
   K108  Northern hardwoods - spruce forest
   K110  Northeastern oak - pine forest


SAF COVER TYPES : 
    16  Aspen
    22  White pine - hemlock
    26  Sugar maple - basswood
    43  Bur oak
    62  Silver maple - American elm
    63  Cottonwood
    95  Black willow
    96  Overcup oak - water hickory
   109  Hawthorn
   110  Black oak
   210  Interior Douglas-fir
   217  Aspen
   222  Black cottonwood - willow
   235  Cottonwood - willow
   236  Bur oak
   237  Interior ponderosa pine
   239  Pinyon - juniper
   252  Paper birch


SRM (RANGELAND) COVER TYPES : 
NO-ENTRY


HABITAT TYPES AND PLANT COMMUNITIES : 
Western poison-ivy is a seral species in a variety of plant communities
throughout its range.  In the northern Great Plains, it occurs as an
understory species in the ponderosa pine (Pinus ponderosa) and ponderosa
pine-common juniper (P. ponderosa-Juniperus scopulorum) upland forest
series.  Woodland series with western poison ivy present in the
understory include bur oak (Quercus macrocarpa), green ash (Fraxinus
pennsylvanica), green ash-American elm (Ulmus americana), bur oak-green
ash, and quaking aspen (Populus tremuloides).

Related categories for Species: Toxicodendron rydbergii | Western Poison-Ivy