DISTRIBUTION AND OCCURRENCE
SPECIES: Lolium multiflorum | Italian Ryegrass 



GENERAL DISTRIBUTION : 
Italian ryegrass, native to Europe, has been introduced throughout the
temperate regions of the world as an agricultural species.  Records of
its cultivation in Italy date back to the thirteenth and fourteenth
centuries [59].  Italian ryegrass occurs throughout the United States,
including Alaska and Hawaii, and in adjacent Canadian provinces
[20,31,35].  Because of difficulties in distinguishing Italian ryegrass
from perennial ryegrass, the exact northern distribution of Italian
ryegrass is not well documented.


ECOSYSTEMS : 
   Italian ryegrass probably occurs in most ecosystems.


STATES : 
     AL  AK  AZ  AR  CA  CO  CT  DE  FL  GA
     HI  ID  IL  IN  IA  KS  KY  LA  ME  MD
     MA  MI  MN  MS  MO  MT  NE  NV  NH  NJ
     NM  NY  NC  ND  OH  OK  OR  PA  RI  SC
     SD  TN  TX  UT  VT  VA  WA  WV  WI  WY
     AB  BC  MB  NB  NF  NS  ON  PE  PQ  SK
     MEXICO


ADMINISTRATIVE UNITS : 
     ACAD  ASIS  BISO  CHIS  CUIS  FLFO
     FODO  GWMP  GLAC  GOGA  GRCA  GRSM
     HALE  HAVO  HOVI  HOSP  MEVE  MORA
     MOSA  NATR  NOCA  OBRI  OLYM  PORE
     PRWI  REDW  RICH  SAMO  SARA  WHSH


BLM PHYSIOGRAPHIC REGIONS : 
    1  Northern Pacific Border
    2  Cascade Mountains
    3  Southern Pacific Border
    4  Sierra Mountains
    5  Columbia Plateau
    6  Upper Basin and Range
    7  Lower 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 : 
NO-ENTRY


SAF COVER TYPES : 
   243  Sierra Nevada mixed conifer
   245  Pacific ponderosa pine
   250  Blue oak-foothills pine
   255  California coast live oak


SRM (RANGELAND) COVER TYPES : 
   201  Blue oak woodland
   202  Coast live oak woodland
   206  Chamise chaparral
   208  Ceanothus mixed chaparral
   214  Coastal prairie
   215  Valley grassland
   605  Sandsage prairie
   606  Wheatgrass-bluestem-needlegrass
   607  Wheatgrass-needlegrass
   608  Wheatgrass-grama-needlegrass
   611  Blue grama-buffalograss
   Italian ryegrass may occur in other SRM cover types as well.


HABITAT TYPES AND PLANT COMMUNITIES : 
Italian ryegrass occurs in grassland communities.  It is a component of
the California annual grasslands, a community composed of exotic grass
species [6,28].  It occurs in a serpentine bunchgrass community, a
freshwater seep community, and a non-native grassland community in Ring
Mountain Preserve in California [16].  

Related categories for Species: Lolium multiflorum | Italian Ryegrass