ILLINOIS PLANT INFORMATION NETWORK
 
 ILPIN INFORMATION ON    Lemna gibba
 
 
 CLASS:    MONOCOTYLEDENAE
 ORDER:    ARALES
 FAMILY:   LEMNACEAE
 SCIENTIFIC NAME:  Lemna gibba
 AUTHORITY:  L.
 
 COMMON NAMES:
    SWOLLEN DUCKWEED
 
 SYNONOMY:   None
 
 PLANTS CODE: LEGI
 
 NATURAL COMMUNITIES:
     LAKE AND POND
       POND
       LAKE
         ARTIFICIAL IMPOUNDMN
           BORROW PIT
 
 
 SAF FOREST COVER TYPE:
     NO
 
 NATURAL DIVISION:  UNAVAILABLE
 
 COUNTIES:
   KNOX            MASON           WILL
 
 GROWTH FORM:  Monocot
 
 TAXONOMIC CHARACTERISTICS:
    ROOTS:  Adventitious
    LEAF TYPE:   Simple
    LEAF VENATION:  Other
 
    INFLORESCENCE:   Solitary- few   Other
    FLOWER STRUCTURE:   Incomplete  (no petals)  (no sepals)
    FRUIT:   Other
 
 DISTINGUISHING CHARACTERISTIC COMMENTS:
     This is a floating thalloid plant; l root, green beneath.
 
 GEOGRAPHIC INFORMATION:
     ORIGIN:   Native
 
 POPULATION DYNAMICS:
     STATE STATUS: Not listed
     FEDERAL STATUS: Not listed
     COMMONNESS:  Rare
     ENDEMIC:   NOT-ENDEMIC
 
 BIOLOGIC:
     HABIT:   Forb
     LIFE CYCLE:   Perennial
     REPRODUCTION:   Sexual   Vegetative
     TROPHIC STATUS:  Autotrophic
     SEX:      Unisexual   -monoecious
 
 ECODISTRIBUTION COMMENTS:
     Species is distributed in standing water.
 
 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:
     WEEDINESS:   Non-weedy
 
 
 
 REFERENCES:
Mohlenbrock, R. H., ed.  1975.  Guide to the vascular flora of Illinois.
     Southern Illinois University Press, Carbondale.  494 pp.
Steyermark, J. A.  1963.  Flora of Missouri.  Iowa State University Press, Ames.
     1725 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.
 
 END OF DATA FOR SPECIES  Lemna gibba
 
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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