ILLINOIS PLANT INFORMATION NETWORK
 
 ILPIN INFORMATION ON    Potamogeton diversifolius
 
 
 CLASS:    MONOCOTYLEDENAE
 ORDER:    NAJADALES
 FAMILY:   POTAMOGETONACEAE
 SCIENTIFIC NAME:  Potamogeton diversifolius
 AUTHORITY:  Raf.
 
 COMMON NAMES:
    WATERTHREAD PONDWEED
 
 SYNONOMY:   None
 
 PLANTS CODE: PODI
 
 NATURAL COMMUNITIES:
     LAKE AND POND
       POND
       LAKE
         RESERVOIR
         NATURAL IMPOUNDMENT
         ARTIFICIAL IMPOUNDMN
     STREAM
       CREEK
         LOW-GRADIENT
 
 
 SAF FOREST COVER TYPE:
     NO
 
 NATURAL DIVISION:  UNAVAILABLE
 
 COUNTIES:
   ALEXANDER       BOND            BROWN           CASS            CHRISTIAN
   CLARK           CLAY            COOK            CRAWFORD        CUMBERLAND
   EDWARDS         EFFINGHAM       FRANKLIN        GALLATIN        GRUNDY
   HAMILTON        HANCOCK         HARDIN          HENDERSON       HENRY
   JACKSON         JASPER          JEFFERSON       JOHNSON         LAKE
   LAWRENCE        MCDONOUGH       MCHENRY         MACOUPIN        MADISON
   MARION          MASON           MASSAC          MENARD          MONROE
   MONTGOMERY      PEORIA          PERRY           PIKE            POPE
   RANDOLPH        RICHLAND        ST. CLAIR       SALINE          SANGAMON
   SHELBY          UNION           WABASH          WAYNE           WHITE
   WILL            WILLIAMSON      WINNEBAGO
 
 GROWTH FORM:  Monocot
 
 TAXONOMIC CHARACTERISTICS:
    ROOTS:  Adventitious   (rhizomes)
    LEAF ARRANGEMENT:   Alternate
    LEAF TYPE:   Simple
    LEAF MARGIN:   Entire
    LEAF VENATION:  Parallel
    LEAF SHAPE:     Linear   Ovate     Oval
    INFLORESCENCE:   Spike
    FLOWER STRUCTURE:   Incomplete  (no petals)  (no sepals)
    FLOWER PLACEMENT:  Hypogynous
    FRUIT:   Achene
 
 DISTINGUISHING CHARACTERISTIC COMMENTS:
     Achene is suborbicular, distinctly flattened, with conspicuous
     dorsal keels and 2 sharp narrow lateral wings; aspect is of a
     snail-coil; stipules are united with leaf base, forming a sheath.
 
 GEOGRAPHIC INFORMATION:
     ORIGIN:   Native
 
 POPULATION DYNAMICS:
     STATE STATUS: Not listed
     FEDERAL STATUS: Not listed
     COMMONNESS:  Occasional
 
 
 BIOLOGIC:
     HABIT:   Forb
     LIFE CYCLE:   Perennial
     REPRODUCTION:   Sexual   Vegetative
     FLOWERING PERIOD:
         MONTH BEGINNING-      5         MONTH END-     10
     TROPHIC STATUS:  Autotrophic
     C02 FIXATION:  C3
     SEX:      Perfect
 
 ECODISTRIBUTION COMMENTS:
     Species is distributed in warms waters; sloughs.
 
 ENVIRONMENTAL RELATIONSHIPS:   No data entered
 
 FUNCTIONAL RELATIONSHIPS:    No data entered
 HUMAN RELATIONSHIP DATA:
     EDIBLE:  Yes-qualified
 
 
 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.
Swink, F., and G. S. Wilhelm.  1979.  Plants of the Chicago region.  Third ed.
     The Morton Arboretum, Lisle, Illinois.  922 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  Potamogeton diversifolius
 
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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