ILLINOIS PLANT INFORMATION NETWORK
 
 ILPIN INFORMATION ON    Cyperus flavescens
 
 
 CLASS:    MONOCOTYLEDENAE
 ORDER:    CYPERALES
 FAMILY:   CYPERACEAE
 SCIENTIFIC NAME:  Cyperus flavescens
 AUTHORITY:  L.
 
 COMMON NAMES:
 NO SELECTED RECORDS IN THE SPECIFIED RANGE
 
 SYNONOMY:   None
 
 PLANTS CODE: CYFL
 
 NATURAL COMMUNITIES:
     WETLAND
       SEDGE MEADOW
       SEEP & SPRING
         TYPICAL SEEP
       BORDER OF LAKE
     CULTURAL
       AGRICULTURAL FIELD
       SUCCESSIONAL FIELD
       DEVELOPED LAND
 
 SAF FOREST COVER TYPE:  UNAVAILABLE
 
 NATURAL DIVISION:  UNAVAILABLE
 
 COUNTIES:
   CASS            CLARK           COLES           CRAWFORD        JACKSON
   JOHNSON         KNOX            MASON           MASSAC          MENARD
   PEORIA          POPE            RICHLAND        UNION
 
 GROWTH FORM:  Monocot
 
 TAXONOMY COMMENTS:
     The var. Poaeformis (Pursh) Fern. is in SCS.V.1. as CYFLP - listed as
     same in Ref. 4.
 
 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:   Achene
 
 DISTINGUISHING CHARACTERISTIC COMMENTS:
     The achene is ovoid, black, and has numerous transverse wrinkles
     that are coated with a white substance. The achene differentiates
     this species from Cyperus rivularis forma elutus.
 
 GEOGRAPHIC INFORMATION:
     ORIGIN:   Native
 
 GEOGRAPHIC COMMENTS:
     Species is primarily in the southern 2 tiers of counties, but also
     in Coles, McDonough, Mason and Peoria counties.
 
 POPULATION DYNAMICS:
     STATE STATUS: Not listed
     FEDERAL STATUS: Not listed
     COMMONNESS:  Uncommon
     ENDEMIC:   NOT-ENDEMIC
 
 BIOLOGIC:
     HABIT:   Grasslike
     LIFE CYCLE:   Annual
     FLOWERING PERIOD:
         MONTH BEGINNING-      7         MONTH END-     10
     TROPHIC STATUS:  Autotrophic
     SEX:      Perfect
 
 ECODISTRIBUTION COMMENTS:
     Species is distributed in open soil, moist open sandy or gravelly
     ground along streams and spring branches, ditches along roads and
     railroads and wet meadows.
 
 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.
Swink, F., and G. S. Wilhelm.  1979.  Plants of the Chicago region.  Third ed.
     The Morton Arboretum, Lisle, Illinois.  922 pp.
Mohlenbrock, R. H.  1967-continuing.  The illustrated flora of Illinois.
     Southern Illinois University Press, Carbondale.
 
 END OF DATA FOR SPECIES  Cyperus flavescens
 
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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