ILLINOIS PLANT INFORMATION NETWORK
 
 ILPIN INFORMATION ON    Sorbus americana
 
 
 CLASS:    DICOTYLEDENAE
 ORDER:    ROSALES
 FAMILY:   ROSACEAE
 SCIENTIFIC NAME:  Sorbus americana
 AUTHORITY:  Marsh
 
 COMMON NAMES:
    AMERICAN MOUNTAIN ASH
 
 SYNONOMY:
     Pyrus americana (Marsh.)DC.
 
 PLANTS CODE: SOAM3
 
 NATURAL COMMUNITIES:
     WETLAND
       BOG
         FORESTED
     PRIMARY
       BLUFF
         CLIFF (ROCKY BLUFF)
           SANDSTONE
 
 SAF FOREST COVER TYPE:  UNAVAILABLE
 
 
 NATURAL DIVISION:
     Rock River Hill Country
        Oregon
 
 COUNTIES:
   OGLE
 
 GROWTH FORM:  Dicot-woody
 
 TAXONOMIC CHARACTERISTICS:
    ROOTS:  Primary
    LEAF ARRANGEMENT:   Alternate
    LEAF TYPE:    Compound  (pinnately)
    LEAF MARGIN:   Serrate
    LEAF VENATION:  Pinnate
    LEAF SHAPE:     Oblong   Lanceolate
    INFLORESCENCE:   Dischasium
    FLOWER MEROUS:  5
    FLOWER STRUCTURE:   Complete   Regular
    FLOWER COLOR:   White
    FLOWER PLACEMENT:  Perigynous
    FRUIT:   Pome
 
 DISTINGUISHING CHARACTERISTIC COMMENTS:
     Numerous flowers in repeatedly branched, round or flattened clusters;
     glabrous branches;  leaves long pointed;  fruit orange-red
 
 GEOGRAPHIC INFORMATION:
     ORIGIN:   Native
 
 POPULATION DYNAMICS:
     STATE STATUS: Endangered-ST
     FEDERAL STATUS: Not listed
     COMMONNESS:  Rare
     ENDEMIC:   NOT-ENDEMIC
 
 BIOLOGIC:
     HABIT:   Tree
     LIFE CYCLE:   Perennial
     REPRODUCTION:   Sexual
     FLOWERING PERIOD:
         MONTH BEGINNING-      5         MONTH END-      6
     TROPHIC STATUS:  Autotrophic
     C02 FIXATION:  C3
     SEX:      Perfect
 
 ECODISTRIBUTION COMMENTS:
     Rocky woods
 
 ENVIRONMENTAL RELATIONSHIPS:
     GROWTH OF SPECIES IN VARIOUS CONDITIONS:  No data entered
 
     HABITAT:   Wet   Moist
 
 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.
Jones, G. N.  1963.  Flora of Illinois.  Third ed.  American Midland Naturalist
     Monograph 7.  University of Notre Dame, Indiana.  401 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.
Schwegman, J. E., G. D. Fell, M. Hutchison, G. Paulson, W. M. Shepherd, and
     J. White.  1973.  Comprehensive plan for the Illinois Nature Preserves
     System.  Part 2 - The Natural Divisions of Illinois.  Illinois Nature
     Preserves Commission, Springfield.  32 pp., plus map.
Miller, R. B., and L. R. Tehon.  1929.  The native and naturalized trees of
     Illinois.  Illinois Natural History Survey Bulletin 18: 1-340.
Porter, C. L.  1967.  Taxonomy of flowering plants.  W. H. Freeman and
     Company, San Francisco.  472 pp.
Gleason, H. A.  1952.  The new Britton and Brown illustrated flora of the
     northeastern United States and adjacent Canada.  3 vols.  The New York
     Botanical Garden, New York.
Sheviak, C. J.  1981.  Endangered and threatened plants.  Pages 70-179 in M.
     L. Bowles, V. E. Diersing, and J. E. Ebinger, eds., Endangered and
     threatened vertebrate animals and vascular plants of Illinois.  Illinois
     Department of Conservation, Springfield.
Downton, W. J. S.  1975.  The occurrence of C4 photosynthesis among plants.
     Photosynthetica 9(1): 96-105.
 
 END OF DATA FOR SPECIES  Sorbus americana
 
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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