ILLINOIS PLANT INFORMATION NETWORK
 
 ILPIN INFORMATION ON    Eryngium yuccifolium
 
 
 CLASS:    DICOTYLEDENAE
 ORDER:    UMBELLALES
 FAMILY:   APIACEAE
 SCIENTIFIC NAME:  Eryngium yuccifolium
 AUTHORITY:  Michx.
 
 COMMON NAMES:
    RATTLESNAKE MASTER
 
 SYNONOMY:   None
 
 PLANTS CODE: ERYU
 
 NATURAL COMMUNITIES:
     FOREST
       THICKETS
     PRAIRIE
       TYPICAL PRAIRIE
         DRY
         DRY-MESIC
         MESIC
       SAND PRAIRIE
         DRY
         DRY-MESIC
         MESIC
       LISTED
         CHARACTERISTIC
     SAVANNA
       TYPICAL SAVANNA
         DRY-MESIC
         MESIC
       SAND SAVANNA
         DRY
         DRY-MESIC
     PRIMARY
       GLADE
         LIMESTONE
       LISTED
         CHARACTERISTIC
 
 SAF FOREST COVER TYPE:  UNAVAILABLE
 
 NATURAL DIVISION:  UNAVAILABLE
 
 COUNTIES:
   ADAMS           ALEXANDER       BOND            BOONE           BROWN
   CALHOUN         CASS            CHAMPAIGN       CHRISTIAN       CLAY
   CLINTON         COLES           COOK            CRAWFORD        CUMBERLAND
   DEKALB          DEWITT          DOUGLAS         DUPAGE          EDGAR
   EFFINGHAM       FAYETTE         FORD            FRANKLIN        FULTON
   GRUNDY          HANCOCK         HARDIN          HENDERSON       HENRY
   IROQUOIS        JACKSON         JASPER          JEFFERSON       JERSEY
   JOHNSON         KANE            KANKAKEE        KENDALL         KNOX
   LAKE            LASALLE         LAWRENCE        LEE             LIVINGSTON
   MCDONOUGH       MCHENRY         MCLEAN          MACON           MACOUPIN
   MADISON         MARION          MARSHALL        MASON           MASSAC
   MENARD          MERCER          MONROE          MONTGOMERY      MOULTRIE
   OGLE            PEORIA          PERRY           PIATT           POPE
   RANDOLPH        RICHLAND        ST. CLAIR       SANGAMON        SHELBY
   STARK           STEPHENSON      VERMILION       WABASH          WARREN
   WASHINGTON      WAYNE           WHITESIDE       WILL            WILLIAMSON
   WINNEBAGO       WOODFORD
 
 GROWTH FORM:  Dicot-herb
 
 TAXONOMIC CHARACTERISTICS:
    ROOTS:  Primary
    LEAF ARRANGEMENT:   Alternate
    LEAF TYPE:   Simple
    LEAF MARGIN:   Entire
    LEAF VENATION:  Parallel
    LEAF SHAPE:     Linear   Lanceolate
    INFLORESCENCE:   Head
    FLOWER MEROUS:  5
    FLOWER STRUCTURE:   Complete   Regular
    FLOWER COLOR:   White
    FLOWER PLACEMENT:  Epigynous
    FRUIT:   SCHIZOCARP
 
 DISTINGUISHING CHARACTERISTIC COMMENTS:
     leaf margins often with spines; leaves clustered near base of plant
 
 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-      7         MONTH END-      8
     TROPHIC STATUS:  Autotrophic
     C02 FIXATION:  C3
     SEX:      Perfect
 
 ECODISTRIBUTION COMMENTS:
     wood openings
 
 ENVIRONMENTAL RELATIONSHIPS:
     GROWTH OF SPECIES IN VARIOUS CONDITIONS:  No data entered
 
     HABITAT:   Moist   Dry
 
 FUNCTIONAL RELATIONSHIPS:    No data entered
 HUMAN RELATIONSHIP DATA:
     SHOWY FLOWERS:  YES      AMOUNT:  Low
 
 
 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.
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.
 
 END OF DATA FOR SPECIES  Eryngium yuccifolium
 
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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