ILLINOIS PLANT INFORMATION NETWORK
 
 ILPIN INFORMATION ON    Amaranthus rudis
 
 
 CLASS:    DICOTYLEDENAE
 ORDER:    CARYOPHYLLALES
 FAMILY:   AMARANTHACEAE
 SCIENTIFIC NAME:  Amaranthus rudis
 AUTHORITY:  Sauer
 
 COMMON NAMES:
    TAMARISK WATERHEMP
    WATER HEMP
 
 SYNONOMY:
     Amaranthus tamariscinus Nutt.
     Acnida tamariscina (Nutt.) Wood
 
 PLANTS CODE: AMRU
 
 NATURAL COMMUNITIES:
     WETLAND
       BORDER OF LAKE
     CULTURAL
       AGRICULTURAL FIELD
         CROPLAND
 
 SAF FOREST COVER TYPE:  UNAVAILABLE
 
 NATURAL DIVISION:  UNAVAILABLE
 
 COUNTIES:
   ADAMS           ALEXANDER       BOONE           BROWN           CALHOUN
   CASS            CHAMPAIGN       CHRISTIAN       CLARK           COLES
   COOK            CRAWFORD        DEWITT          DOUGLAS         FAYETTE
   FORD            FULTON          GALLATIN        GREENE          GRUNDY
   HANCOCK         HENRY           IROQUOIS        JACKSON         JERSEY
   KANE            KENDALL         LAKE            LASALLE         LAWRENCE
   LOGAN           MCDONOUGH       MACON           MACOUPIN        MADISON
   MARSHALL        MASSAC          MOULTRIE        OGLE            PEORIA
   PIATT           PIKE            PULASKI         RANDOLPH        ST. CLAIR
   SANGAMON        SHELBY          TAZEWELL        UNION           VERMILION
   WABASH          WARREN          WHITESIDE       WILL            WINNEBAGO
 
 
 GROWTH FORM:  Dicot-herb
 
 TAXONOMIC CHARACTERISTICS:
    ROOTS:  Primary
    LEAF ARRANGEMENT:   Alternate
    LEAF TYPE:   Simple
    LEAF MARGIN:   Entire
    LEAF VENATION:  Pinnate
    LEAF SHAPE:     Oblong   Lanceolate     Oval
    INFLORESCENCE:   Panicle  Spike
    FLOWER STRUCTURE:   Incomplete  (no petals)
    FLOWER PLACEMENT:  Hypogynous
    FRUIT:   Achene
 
 GEOGRAPHIC INFORMATION:
     ORIGIN:   Native
 
 GEOGRAPHIC COMMENTS:
     Species may be adventive from western states.
 
 POPULATION DYNAMICS:
     STATE STATUS: Not listed
     FEDERAL STATUS: Not listed
     ENDEMIC:   NOT-ENDEMIC
 
 BIOLOGIC:
     HABIT:   Forb
     LIFE CYCLE:   Annual
     REPRODUCTION:   Sexual
     FLOWERING PERIOD:
         MONTH BEGINNING-      7         MONTH END-     10
     TROPHIC STATUS:  Autotrophic
     C02 FIXATION:  C4
     SEX:      Unisexual   -dioecious
 
 ECODISTRIBUTION COMMENTS:
     Species is distributed on waste ground; mud flats.
 
 ENVIRONMENTAL RELATIONSHIPS:   No data entered
 
 FUNCTIONAL RELATIONSHIPS:
     MYCORRHIZAE:   no
 
 HUMAN RELATIONSHIP DATA:
     ALLERGENIC:  Yes
     SHOWY FLOWERS:  YES      AMOUNT:  Low
     LANDSCAPING:  NO
 
 HUMAN FACTOR COMMENTS:
     Species causes hayfever.
 
 WILDLIFE AND LIVESTOCK INFORMATION:   No data entered
 
 REVEGETATION PLANTINGS:
     WEEDINESS:   COLONIZING
 
 
 
 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.
Steyermark, J. A.  1963.  Flora of Missouri.  Iowa State University Press, Ames.
     1725 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.
Swink, F., and G. S. Wilhelm.  1979.  Plants of the Chicago region.  Third ed.
     The Morton Arboretum, Lisle, Illinois.  922 pp.
Downton, W. J. S.  1975.  The occurrence of C4 photosynthesis among plants.
     Photosynthetica 9(1): 96-105.
Mohlenbrock, R. H., ed.  1986.  Guide to the vascular flora of Illinois.
     Revised and enlarged edition.  Southern Illinois University Press,
     Carbondale.  507 pp.
 
 END OF DATA FOR SPECIES  Amaranthus rudis
 
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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