ILLINOIS PLANT INFORMATION NETWORK
 
 ILPIN INFORMATION ON    Pyrus pyrifolia
 
 
 CLASS:    DICOTYLEDENAE
 ORDER:    ROSALES
 FAMILY:   ROSACEAE
 SCIENTIFIC NAME:  Pyrus pyrifolia
 AUTHORITY:  (Burm. F.) Nakai
 
 COMMON NAMES:
    CHINESE PEAR
 
 SYNONOMY:   None
 
 PLANTS CODE: PYPY2
 
 NATURAL COMMUNITIES:
     WETLAND
       BORDER OF LAKE
     CULTURAL
       DEVELOPED LAND
 
 SAF FOREST COVER TYPE:  UNAVAILABLE
 
 NATURAL DIVISION:  UNAVAILABLE
 
 COUNTIES:
   UNION
 
 GROWTH FORM:  Dicot-woody
 
 TAXONOMIC CHARACTERISTICS:
    ROOTS:  Primary
    LEAF ARRANGEMENT:   Alternate
    LEAF TYPE:   Simple
    LEAF MARGIN:   Serrate
    LEAF VENATION:  Pinnate
    LEAF SHAPE:     Ovate
    INFLORESCENCE:   Umbel
    FLOWER MEROUS:  5
    FLOWER STRUCTURE:   Complete   Regular
    FLOWER COLOR:   White
    FLOWER PLACEMENT:  Perigynous
    FRUIT:   Pome
 
 DISTINGUISHING CHARACTERISTIC COMMENTS:
     Leaves are tomentose when young; fruit is subglobose.
 
 GEOGRAPHIC INFORMATION:
     ORIGIN:   Introduced-  Asia
 
 POPULATION DYNAMICS:
     STATE STATUS: Not listed
     FEDERAL STATUS: Not listed
     COMMONNESS:  Rare
     ENDEMIC:   NOT-ENDEMIC
 
 BIOLOGIC:
     HABIT:   Tree
     LIFE CYCLE:   Perennial
     REPRODUCTION:   Sexual
     FLOWERING PERIOD:
         MONTH BEGINNING-      4        MONTH IN MODE-      4         MONTH END-      4
     TROPHIC STATUS:  Autotrophic
     C02 FIXATION:  C3
     SEX:      Perfect
 
 ENVIRONMENTAL RELATIONSHIPS:   No data entered
 
 FUNCTIONAL RELATIONSHIPS:    No data entered
 HUMAN RELATIONSHIP DATA:    No data entered
 
 WILDLIFE AND LIVESTOCK INFORMATION:   No data entered
 
 REVEGETATION PLANTINGS:    No data entered
 
 
 REFERENCES:
Mohlenbrock, R. H., ed.  1975.  Guide to the vascular flora of Illinois.
     Southern Illinois University Press, Carbondale.  494 pp.
Gleason, H. A., and A. Cronquist.  1963.  Manual of vascular plants of north-
     eastern United States and adjacent Canada.  Van Nostrand Reinhold Co.,
     New York.  810 pp.
Fernald, M. L.  1950.  Gray's manual of botany.  8th ed.  American Book Co.,
     New York.  1632 pp.
Downton, W. J. S.  1975.  The occurrence of C4 photosynthesis among plants.
     Photosynthetica 9(1): 96-105.
 
 END OF DATA FOR SPECIES  Pyrus pyrifolia
 
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 ILPIN was developed by Louis Iverson*, with data compiled by David Ketzner and Jeanne Karnes
 Illinois Natural History Survey, 607 E. Peabody Dr., Champaign, IL 61820
     *currently employed by USDA Forest Service, 359 Main Rd., Delaware, OH 43015