ILLINOIS PLANT INFORMATION NETWORK
 
 ILPIN INFORMATION ON    Asclepias quadrifolia
 
 
 CLASS:    DICOTYLEDENAE
 ORDER:    GENTIANALES
 FAMILY:   ASCLEPIADACEAE
 SCIENTIFIC NAME:  Asclepias quadrifolia
 AUTHORITY:  Jacq.
 
 COMMON NAMES:
    WHORLED MILKWEED
 
 SYNONOMY:   None
 
 PLANTS CODE: ASQU
 
 NATURAL COMMUNITIES:
     FOREST
       UPLAND FOREST
         DRY
     PRIMARY
       GLADE
         LIMESTONE
 
 SAF FOREST COVER TYPE:  UNAVAILABLE
 
 NATURAL DIVISION:  UNAVAILABLE
 
 COUNTIES:
   ADAMS           BROWN           CASS            FULTON          GREENE
   HANCOCK         HENDERSON       JACKSON         JERSEY          KNOX
   MCDONOUGH       MACOUPIN        MASON           MENARD          MONROE
   MORGAN          PEORIA          PIKE            ST. CLAIR       SALINE
   SCHUYLER        SHELBY          TAZEWELL        UNION           WOODFORD
 
 
 GROWTH FORM:  Dicot-herb
 
 TAXONOMIC CHARACTERISTICS:
    ROOTS:  Primary
    LEAF ARRANGEMENT:     Opposite  Whorled
    LEAF TYPE:   Simple
    LEAF MARGIN:   Entire
    LEAF VENATION:  Pinnate
    LEAF SHAPE:     Lanceolate   Ovate
    INFLORESCENCE:   Umbel
    FLOWER MEROUS:  5
    FLOWER STRUCTURE:   Complete   Regular
    FLOWER COLOR:   Red   White
    FLOWER PLACEMENT:  Hypogynous
    FRUIT:   Follicle
 
 DISTINGUISHING CHARACTERISTIC COMMENTS:
     Plant has fragrant flowers.
 
 GEOGRAPHIC INFORMATION:
     ORIGIN:   Native
 
 POPULATION DYNAMICS:
     STATE STATUS: Not listed
     FEDERAL STATUS: Not listed
     COMMONNESS:  Occasional
     ENDEMIC:   NOT-ENDEMIC
 
 BIOLOGIC:
     HABIT:   Forb
     LIFE CYCLE:   Perennial
     REPRODUCTION:   Sexual
     FLOWERING PERIOD:
         MONTH BEGINNING-      5         MONTH END-      7
     TROPHIC STATUS:  Autotrophic
     C02 FIXATION:  C3
     SEX:      Perfect
 
 ECODISTRIBUTION COMMENTS:
     Species is distributed in rich or rocky open woods; ridges.
 
 ENVIRONMENTAL RELATIONSHIPS:   No data entered
 
 FUNCTIONAL RELATIONSHIPS:
     MAJOR DISPERSAL AGENTS:   WIND
     MAJOR POLLINATION AGENT:   INSECT
 
 HUMAN RELATIONSHIP DATA:
     SHOWY FLOWERS:  YES      AMOUNT:  Medium
 
 
 WILDLIFE AND LIVESTOCK INFORMATION:   No data entered
 
 REVEGETATION PLANTINGS:    No data entered
 
 
 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.
Downton, W. J. S.  1975.  The occurrence of C4 photosynthesis among plants.
     Photosynthetica 9(1): 96-105.
Smith, J. P.  1977.  Vascular plant families.  Mad River Press, Inc., Eureka,
     California.  320 pp.
 
 END OF DATA FOR SPECIES  Asclepias quadrifolia
 
 ------------------------------------------------------------------------
 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