ILLINOIS PLANT INFORMATION NETWORK
 
 ILPIN INFORMATION ON    Artemisia annua
 
 
 CLASS:    DICOTYLEDENAE
 ORDER:    ASTERALES
 FAMILY:   ASTERACEAE
 SCIENTIFIC NAME:  Artemisia annua
 AUTHORITY:  L.
 
 COMMON NAMES:
    ANNUAL WORMWOOD
    SWEET WORMWOOD
 
 SYNONOMY:   None
 
 PLANTS CODE: ARAN3
 
 NATURAL COMMUNITIES:
     WETLAND
       BORDER OF LAKE
     CULTURAL
       AGRICULTURAL FIELD
       SUCCESSIONAL FIELD
       DEVELOPED LAND
 
 SAF FOREST COVER TYPE:  UNAVAILABLE
 
 NATURAL DIVISION:  UNAVAILABLE
 
 COUNTIES:
   ADAMS           ALEXANDER       BROWN           CASS            CLARK
   COLES           COOK            CRAWFORD        CUMBERLAND      DUPAGE
   EDGAR           EDWARDS         FAYETTE         FULTON          GREENE
   HANCOCK         HARDIN          HENRY           JACKSON         JEFFERSON
   JOHNSON         KANKAKEE        KNOX            LAKE            LASALLE
   LAWRENCE        MCDONOUGH       MCLEAN          MACON           MASON
   MASSAC          MONROE          OGLE            PEORIA          PIKE
   POPE            PULASKI         RANDOLPH        RICHLAND        ROCK ISLAND
   ST. CLAIR       SCHUYLER        SCOTT           UNION           VERMILION
   WABASH          WHITE           WILL
 
 GROWTH FORM:  Dicot-herb
 
 TAXONOMIC CHARACTERISTICS:
    ROOTS:  Primary
    LEAF ARRANGEMENT:   Alternate
    LEAF TYPE:   Simple
    LEAF MARGIN:   Serrate   Lobed  (pinnately)
    LEAF VENATION:  Pinnate
    LEAF SHAPE:     Linear   Oblong   Lanceolate   Ovate
    INFLORESCENCE:   Panicle  Head
    FLOWER STRUCTURE:   Incomplete   Regular
    FLOWER PLACEMENT:  Epigynous
    FRUIT:   Achene
 
 DISTINGUISHING CHARACTERISTIC COMMENTS:
     Leaves green, glabrous, greatly dissected (50+ divisions per leaf); sweet-
     scented when bruised.
 
 GEOGRAPHIC INFORMATION:
     ORIGIN:   Introduced-  Europe   Asia
 
 POPULATION DYNAMICS:
     STATE STATUS: Not listed
     FEDERAL STATUS: Not listed
     COMMONNESS:  Occasional
     ENDEMIC:   NOT-ENDEMIC
 POPULATION STATUS COMMENTS:
     Naturalized.
 
 
 BIOLOGIC:
     HABIT:   Forb
     LIFE CYCLE:   Annual
     REPRODUCTION:   Sexual
     FLOWERING PERIOD:
         MONTH BEGINNING-      8         MONTH END-     10
     TROPHIC STATUS:  Autotrophic
     SEX:      Perfect     Unisexual   -monoecious
 
 BIOLOGIC COMMENTS:
     Florets all fertile, the outer pistillate.
 
 ECODISTRIBUTION COMMENTS:
     Dwellings; barnyards; farm lots; low and alluvial ground in rich fallow fields;
     borders of woods; mudflats along streams and ponds; waste ground; roadsides;
     railroads.  A favorite habitat is in alleys of older cities.
 
 ENVIRONMENTAL RELATIONSHIPS:
     GROWTH OF SPECIES IN VARIOUS CONDITIONS:
          GRAVEL         Good               SAND           Good
          SANDY LOAM     No data entered    LOAM           No data entered
          CLAY LOAM      No data entered    CLAY           No data entered
          DENSE CLAY     No data entered    ORGANIC SOIL   No data entered
          NEUTRAL pH     No data entered    ACIDIC SOIL    No data entered
          EXTREMELY ACID No data entered    SALINE SOIL    No data entered
          SODIC SOIL     No data entered    SODIC-SALINE   No data entered
          ROCKY OUTCROPS No data entered    GENTLE SLOPES  No data entered
          MODERATE SLOPE No data entered    STEEP SLOPES   No data entered
     HABITAT:   Dry
 
 FUNCTIONAL RELATIONSHIPS:
     MAJOR POLLINATION AGENT:   Wind
 
 HUMAN RELATIONSHIP DATA:
     ALLERGENIC:  Yes
 
 
 WILDLIFE AND LIVESTOCK INFORMATION:   No data entered
 
 REVEGETATION PLANTINGS:
     WEEDINESS:   COLONIZING
 
 
 GENERAL COMMENTS:
     An economic weed in western states-PIN.
 
 
 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.
Agricultural Experiment Station.  1981.  Weeds of the North Central States.
     Bulletin 772.  College of Agriculture, University of Illinois at Urbana-
     Champaign, Urbana.  303 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  Artemisia annua
 
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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