ILLINOIS PLANT INFORMATION NETWORK
 
 ILPIN INFORMATION ON    Cyperus compressus
 
 
 CLASS:    MONOCOTYLEDENAE
 ORDER:    CYPERALES
 FAMILY:   CYPERACEAE
 SCIENTIFIC NAME:  Cyperus compressus
 AUTHORITY:  L.
 
 COMMON NAMES:
 NO SELECTED RECORDS IN THE SPECIFIED RANGE
 
 SYNONOMY:   None
 
 PLANTS CODE: CYCC
 
 NATURAL COMMUNITIES:
     CULTURAL
       SUCCESSIONAL FIELD
       DEVELOPED LAND
 
 
 SAF FOREST COVER TYPE:
     NO
 
 NATURAL DIVISION:  UNAVAILABLE
 
 COUNTIES:
   LAWRENCE
 
 GROWTH FORM:  Monocot
 
 TAXONOMIC CHARACTERISTICS:
    ROOTS:  Adventitious   (fibrous)
    LEAF ARRANGEMENT:   Alternate
    LEAF TYPE:   Simple
    LEAF MARGIN:   Entire
    LEAF VENATION:  Parallel
    LEAF SHAPE:     Linear
    INFLORESCENCE:   Spike  Umbel
    FLOWER MEROUS:  3
    FLOWER STRUCTURE:   Incomplete  (no petals)  (no sepals)
    FLOWER PLACEMENT:  Hypogynous
    FRUIT:   Grain
 
 DISTINGUISHING CHARACTERISTIC COMMENTS:
     Species has up to 5 involucral bracts surpassing inflorescence, inforescence
     a more-or-less hemispherical umbel. Spikelets are straight,
     lanceolate, flat, to 40 flowers. Scales are slightly spreading, with a
     broad, green midrib apically forming a cusp.
 
 GEOGRAPHIC INFORMATION:
     ORIGIN:   Introduced-  S. America   N. America
 
 GEOGRAPHIC COMMENTS:
     Species is native of southern U.S. and tropical Americas. In Illinois,
     a single collection is in Lawrence county.
 
 POPULATION DYNAMICS:
     STATE STATUS: Not listed
     FEDERAL STATUS: Not listed
     COMMONNESS:  Rare
     ENDEMIC:   NOT-ENDEMIC
 POPULATION STATUS COMMENTS:
     Ref. 8 says this species may appear elsewhere in Illinois on wet ditches
     that show some disturbance.
 
 
 BIOLOGIC:
     HABIT:   Grasslike
     LIFE CYCLE:   Annual
     FLOWERING PERIOD:
         MONTH BEGINNING-      6         MONTH END-     10
     TROPHIC STATUS:  Autotrophic
     C02 FIXATION:  C4
     SEX:      Perfect
 
 ECODISTRIBUTION COMMENTS:
     Species is distributed along roadside ditches in Illinois; in Missouri,
     it is distributed on swampy ground.
 
 ENVIRONMENTAL RELATIONSHIPS:   No data entered
 
 FUNCTIONAL RELATIONSHIPS:    No data entered
 HUMAN RELATIONSHIP DATA:    No data entered
 
 WILDLIFE AND LIVESTOCK INFORMATION:   No data entered
 
 REVEGETATION PLANTINGS:    No data entered
 
 
 REFERENCES:
Steyermark, J. A.  1963.  Flora of Missouri.  Iowa State University Press, Ames.
     1725 pp.
Mohlenbrock, R. H.  1967-continuing.  The illustrated flora of Illinois.
     Southern Illinois University Press, Carbondale.
Downton, W. J. S.  1975.  The occurrence of C4 photosynthesis among plants.
     Photosynthetica 9(1): 96-105.
 
 END OF DATA FOR SPECIES  Cyperus compressus
 
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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