ILLINOIS PLANT INFORMATION NETWORK
 
 ILPIN INFORMATION ON    Gratiola virginiana
 
 
 CLASS:    DICOTYLEDENAE
 ORDER:    SCROPHULARIALES
 FAMILY:   SCROPHULARIACEAE
 SCIENTIFIC NAME:  Gratiola virginiana
 AUTHORITY:  L.
 
 COMMON NAMES:
    ROUND-FRUITED HEDGE HYSSOP
 
 SYNONOMY:   None
 
 PLANTS CODE: GRVI
 
 NATURAL COMMUNITIES:
     WETLAND
       BORDER OF LAKE
     LAKE AND POND
       POND
 
 
 SAF FOREST COVER TYPE:
     NO
 
 NATURAL DIVISION:  UNAVAILABLE
 
 COUNTIES:
   BOND            CASS            COOK            CRAWFORD        FRANKLIN
   GREENE          GRUNDY          HANCOCK         HENDERSON       IROQUOIS
   JACKSON         JOHNSON         LAWRENCE        MCHENRY         MACOUPIN
   MADISON         MARION          MASSAC          MENARD          MORGAN
   PERRY           PIKE            POPE            RICHLAND        ST. CLAIR
   SALINE          STARK           UNION           WABASH          WAYNE
   WHITE           WILL            WILLIAMSON
 
 GROWTH FORM:  Dicot-herb
 
 TAXONOMIC CHARACTERISTICS:
    ROOTS:  Primary
    LEAF ARRANGEMENT:     Opposite
    LEAF TYPE:   Simple
    LEAF MARGIN:   Undulate   Serrate
    LEAF VENATION:  Pinnate
    LEAF SHAPE:     Oblong   Lanceolate
    INFLORESCENCE:   Solitary- few
    FLOWER MEROUS:  5
    FLOWER STRUCTURE:   Complete   Irregular
    FLOWER COLOR:   White
    FLOWER PLACEMENT:  Hypogynous
    FRUIT:   Capsule
 
 DISTINGUISHING CHARACTERISTIC COMMENTS:
     Stems are glabrous, fleshy.
 
 GEOGRAPHIC INFORMATION:
     ORIGIN:   Native
 
 POPULATION DYNAMICS:
     STATE STATUS: Not listed
     FEDERAL STATUS: Not listed
     COMMONNESS:  Occasional
     ENDEMIC:   NOT-ENDEMIC
 
 BIOLOGIC:
     HABIT:   Forb
     LIFE CYCLE:   Biennial   Annual
     REPRODUCTION:   Sexual
     FLOWERING PERIOD:
         MONTH BEGINNING-      4         MONTH END-     10
     TROPHIC STATUS:  Autotrophic
     C02 FIXATION:  C3
     SEX:      Perfect
 
 BIOLOGIC COMMENTS:
     Late flowers are often cleistogamous.
 
 ECODISTRIBUTION COMMENTS:
     Species is distributed in sloughs, ditches; dusturbed or recently
     inundated, muddy places, areas free of competition.
 
 ENVIRONMENTAL RELATIONSHIPS:   No data entered
 
 FUNCTIONAL RELATIONSHIPS:    No data entered
 HUMAN RELATIONSHIP DATA:
     LANDSCAPING:  NO
 
 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  Gratiola virginiana
 
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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