ILLINOIS PLANT INFORMATION NETWORK
 
 ILPIN INFORMATION ON    Geum vernum
 
 
 CLASS:    DICOTYLEDENAE
 ORDER:    ROSALES
 FAMILY:   ROSACEAE
 SCIENTIFIC NAME:  Geum vernum
 AUTHORITY:  (Raf.) Torr. & Gray
 
 COMMON NAMES:
    SPRING AVENS
 
 SYNONOMY:   None
 
 PLANTS CODE: GEVE
 
 NATURAL COMMUNITIES:
     FOREST
       UPLAND FOREST
         MESIC
         WET-MESIC
       FLOODPLAIN FOREST
         MESIC
         WET-MESIC
         WET
       THICKETS
     WETLAND
       SEEP & SPRING
         ACID GRAVEL SEEP
 
 SAF FOREST COVER TYPE:  UNAVAILABLE
 
 
 NATURAL DIVISION:
     Coastal Plain
        Cretaceous Hills
 
 COUNTIES:
   ADAMS           ALEXANDER       BOND            BOONE           BROWN
   CHAMPAIGN       CLARK           CLAY            COLES           COOK
   CRAWFORD        CUMBERLAND      DEKALB          DEWITT          DOUGLAS
   DUPAGE          EDGAR           EDWARDS         EFFINGHAM       FAYETTE
   FRANKLIN        GALLATIN        HAMILTON        HANCOCK         HARDIN
   IROQUOIS        JACKSON         JASPER          JOHNSON         LASALLE
   LAWRENCE        MCDONOUGH       MACON           MACOUPIN        MARION
   MASSAC          MONTGOMERY      MOULTRIE        PEORIA          PERRY
   PIATT           POPE            PULASKI         RANDOLPH        RICHLAND
   ST. CLAIR       SALINE          SANGAMON        SHELBY          UNION
   VERMILION       WARREN          WASHINGTON      WAYNE           WILL
   WILLIAMSON      WINNEBAGO
 
 GROWTH FORM:  Dicot-herb
 
 TAXONOMIC CHARACTERISTICS:
    ROOTS:  Primary   Adventitious   (rhizomes)
    LEAF ARRANGEMENT:   Alternate    Basal
    LEAF TYPE:   Simple  Compound  (pinnately)  (trifoliate)
    LEAF MARGIN:   Serrate   Lobed  (pinnately)
    LEAF VENATION:  Pinnate
    LEAF SHAPE:       Cordate
    INFLORESCENCE:   Solitary- few
    FLOWER MEROUS:  5
    FLOWER STRUCTURE:   Complete   Regular
    FLOWER COLOR:   Yellow
    FLOWER PLACEMENT:  Perigynous
    FRUIT:   Achene
 
 DISTINGUISHING CHARACTERISTIC COMMENTS:
     Receptacle is stalked in the calyx.
 
 GEOGRAPHIC INFORMATION:
     ORIGIN:   Native
 
 POPULATION DYNAMICS:
     STATE STATUS: Not listed
     FEDERAL STATUS: Not listed
     COMMONNESS:  Common
     ENDEMIC:   NOT-ENDEMIC
 POPULATION STATUS COMMENTS:
     Species is occasional or rare in the northern half.
 
 
 BIOLOGIC:
     HABIT:   Forb
     LIFE CYCLE:   Perennial
     REPRODUCTION:   Sexual   Vegetative
     FLOWERING PERIOD:
         MONTH BEGINNING-      4         MONTH END-      5
     TROPHIC STATUS:  Autotrophic
     C02 FIXATION:  C3
     SEX:      Perfect
 
 ECODISTRIBUTION COMMENTS:
     Species is distributed in shaded woodland paths; weedy areas.
 
 ENVIRONMENTAL RELATIONSHIPS:   No data entered
 
 FUNCTIONAL RELATIONSHIPS:
     MAJOR DISPERSAL AGENTS:   BIRD   -external     MAMMAL   -external
 
 
 HUMAN RELATIONSHIP DATA:    No data entered
 
 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  Geum vernum
 
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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