ILLINOIS PLANT INFORMATION NETWORK
 
 ILPIN INFORMATION ON    Zannichellia palustris
 
 
 CLASS:    MONOCOTYLEDENAE
 ORDER:    NAJADALES
 FAMILY:   ZANNICHELLIACEAE
 SCIENTIFIC NAME:  Zannichellia palustris
 AUTHORITY:  L.
 
 COMMON NAMES:
    COMMON POOLMAT
    HORNED PONDWEED
 
 SYNONOMY:   None
 
 PLANTS CODE: ZAPA
 
 NATURAL COMMUNITIES:
     WETLAND
       MARSH
       SEEP & SPRING
       BORDER OF LAKE
     LAKE AND POND
       POND
 
 
 SAF FOREST COVER TYPE:
     NO
 
 NATURAL DIVISION:  UNAVAILABLE
 
 COUNTIES:
   ADAMS           CARROLL         COOK            FULTON          HANCOCK
   HENDERSON       HENRY           JACKSON         KNOX            LAKE
   LEE             MCHENRY         MASON           MENARD          MORGAN
   OGLE            PEORIA          ROCK ISLAND     ST. CLAIR       SANGAMON
   SCHUYLER        STEPHENSON      VERMILION       WARREN          WHITESIDE
   WINNEBAGO       WOODFORD
 
 GROWTH FORM:  Monocot
 
 TAXONOMIC CHARACTERISTICS:
    ROOTS:  Adventitious   (rhizomes)
    LEAF ARRANGEMENT:     Opposite
    LEAF TYPE:   Simple
    LEAF MARGIN:   Entire
    LEAF VENATION:  Parallel
    LEAF SHAPE:     Linear
    INFLORESCENCE:   Other
    FLOWER STRUCTURE:   Incomplete  (no petals)  (no sepals)
    FLOWER PLACEMENT:  Hypogynous
    FRUIT:   Achene
 
 DISTINGUISHING CHARACTERISTIC COMMENTS:
     Fruits are pedicellate and beaked at apex.
 
 GEOGRAPHIC INFORMATION:
     ORIGIN:   Native
 
 GEOGRAPHIC COMMENTS:
     Species is occasional in northern 1/3 of Illinois, also Jackson co.
 
 POPULATION DYNAMICS:
     STATE STATUS: Not listed
     FEDERAL STATUS: Not listed
     COMMONNESS:  Occasional
     ENDEMIC:   NOT-ENDEMIC
 
 BIOLOGIC:
     HABIT:   Forb
     LIFE CYCLE:   Perennial
     REPRODUCTION:   Sexual   Vegetative
     FLOWERING PERIOD:
         MONTH BEGINNING-      6         MONTH END-     10
     TROPHIC STATUS:  Autotrophic
     SEX:      Unisexual   -monoecious
 
 ECODISTRIBUTION COMMENTS:
     Species is distributed in fresh water springs, salt and sulfur springs, and
     along shallow and backwater sloughs of streams.
 
 ENVIRONMENTAL RELATIONSHIPS:   No data entered
 
 FUNCTIONAL RELATIONSHIPS:    No data entered
 HUMAN RELATIONSHIP DATA:    No data entered
 
 WILDLIFE AND LIVESTOCK INFORMATION:
     FOOD VALUE:  No data entered
     COVER VALUE:  No data entered
 
 LIVESTOCK PALATABILITY DATA:
     CATTLE FORAGE: No data    SHEEP FORAGE:  No data    HORSE FORAGE:  No data
     GOAT FORAGE:   No data    ENERGY VALUE:  Low        PROTEIN VALUE: Low
     POISONOUS (LIVESTOCK):   No
 
 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  Zannichellia palustris
 
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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