ILLINOIS PLANT INFORMATION NETWORK
 
 ILPIN INFORMATION ON    Sphenopholis obtusata major
 
 
 CLASS:    MONOCOTYLEDENAE
 ORDER:    CYPERALES
 FAMILY:   POACEAE
 SCIENTIFIC NAME:  Sphenopholis obtusata major
 AUTHORITY:  (Michx.) Scribn.
 SUBSPECIFIC AUTHORITY: (Torr.) Erdman
 
 COMMON NAMES:
    WEDGE GRASS
 
 SYNONOMY:
     Sphenopholis intermedia (Rydb.) Rydb.
 
 PLANTS CODE: SPOBM
 
 NATURAL COMMUNITIES:
     FOREST
       UPLAND FOREST
         MESIC
     PRAIRIE
       TYPICAL PRAIRIE
         MESIC
     WETLAND
       SEEP & SPRING
         ACID GRAVEL SEEP
 
 SAF FOREST COVER TYPE:  UNAVAILABLE
 
 
 NATURAL DIVISION:
     Coastal Plain
        Cretaceous Hills
 
 COUNTIES:
   ADAMS           ALEXANDER       BOND            BOONE           BROWN
   BUREAU          CALHOUN         CARROLL         CASS            CHAMPAIGN
   CHRISTIAN       CLARK           CLAY            COLES           COOK
   CRAWFORD        CUMBERLAND      DEKALB          DEWITT          DOUGLAS
   DUPAGE          EDGAR           EDWARDS         EFFINGHAM       FAYETTE
   FORD            FRANKLIN        FULTON          GALLATIN        GREENE
   GRUNDY          HANCOCK         HARDIN          HENDERSON       HENRY
   IROQUOIS        JACKSON         JASPER          JERSEY          JO DAVIESS
   JOHNSON         KANE            KANKAKEE        KENDALL         LAKE
   LASALLE         LAWRENCE        LEE             LOGAN           MCDONOUGH
   MCHENRY         MCLEAN          MACON           MACOUPIN        MARION
   MASON           MASSAC          MENARD          MERCER          MONROE
   MORGAN          PEORIA          PERRY           PIATT           PIKE
   POPE            PULASKI         PUTNAM          RANDOLPH        RICHLAND
   ROCK ISLAND     ST. CLAIR       SALINE          SANGAMON        SCHUYLER
   SCOTT           SHELBY          STARK           TAZEWELL        UNION
   VERMILION       WABASH          WARREN          WAYNE           WHITE
   WHITESIDE       WILL            WILLIAMSON      WINNEBAGO       WOODFORD
 
 
 GROWTH FORM:  Monocot
 
 TAXONOMIC CHARACTERISTICS:
    ROOTS:  Adventitious
    LEAF ARRANGEMENT:   Alternate
    LEAF TYPE:   Simple
    LEAF MARGIN:   Entire
    LEAF VENATION:  Parallel
    LEAF SHAPE:     Linear
    INFLORESCENCE:   Panicle
    FLOWER MEROUS:  3
    FLOWER STRUCTURE:   Complete
    FLOWER PLACEMENT:  Hypogynous
    FRUIT:   Grain
 
 DISTINGUISHING CHARACTERISTIC COMMENTS:
     Species differs from var. obtusata in that it has slightly longer
     spikelets, and obscurely nerved, pointed second glume.
 
 GEOGRAPHIC INFORMATION:
     ORIGIN:   Native
 
 GEOGRAPHIC COMMENTS:
     Species is distributed throughout the state.
 
 POPULATION DYNAMICS:
     STATE STATUS: Not listed
     FEDERAL STATUS: Not listed
     COMMONNESS:  Common
     ENDEMIC:   NOT-ENDEMIC
 POPULATION STATUS COMMENTS:
     Species is nearly as abundant as S. obtusata var. obtusata.
 
 
 BIOLOGIC:
     HABIT:   Grasslike
     LIFE CYCLE:   Perennial
     FLOWERING PERIOD:
         MONTH BEGINNING-      5         MONTH END-      7
     TROPHIC STATUS:  Autotrophic
     SEX:      Perfect
 
 BIOLOGIC COMMENTS:
     Species is spring-flowering.
 
 ENVIRONMENTAL RELATIONSHIPS:   No data entered
 
 FUNCTIONAL RELATIONSHIPS:    No data entered
 HUMAN RELATIONSHIP DATA:    No data entered
 
 WILDLIFE AND LIVESTOCK INFORMATION:   No data entered
 
 LIVESTOCK COMMENTS:
     Species affords good early grazing.
 
 REVEGETATION PLANTINGS:    No data entered
 
 
 REFERENCES:
Mohlenbrock, R. H.  1967-continuing.  The illustrated flora of Illinois.
     Southern Illinois University Press, Carbondale.
 
 END OF DATA FOR SPECIES  Sphenopholis obtusata major
 
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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