ILLINOIS PLANT INFORMATION NETWORK
 
 ILPIN INFORMATION ON    Juncus gerardii
 
 
 CLASS:    MONOCOTYLEDENAE
 ORDER:    JUNCALES
 FAMILY:   JUNCACEAE
 SCIENTIFIC NAME:  Juncus gerardii
 AUTHORITY:  Loisel
 
 COMMON NAMES:
    BLACK GRASS
    SALT MEADOW RUSH
 
 SYNONOMY:   None
 
 PLANTS CODE: JUGE
 
 NATURAL COMMUNITIES:
     WETLAND
       MARSH
     CULTURAL
       DEVELOPED LAND
 
 
 SAF FOREST COVER TYPE:
     NO
 
 
 NATURAL DIVISION:
     Northeastern Morainal
 
 COUNTIES:
   COOK
 
 GROWTH FORM:  Monocot
 
 TAXONOMIC CHARACTERISTICS:
    ROOTS:  Adventitious   (rhizomes)
    LEAF ARRANGEMENT:   Alternate
    LEAF TYPE:   Simple
    LEAF MARGIN:   Entire
    LEAF VENATION:  Parallel
    LEAF SHAPE:     Linear
    INFLORESCENCE:   Dischasium  Other
    FLOWER MEROUS:  3
    FLOWER STRUCTURE:   Complete   Regular
    FLOWER COLOR:   Green   Others
    FLOWER PLACEMENT:  Hypogynous
    FRUIT:   Capsule
 
 GEOGRAPHIC INFORMATION:
     ORIGIN:   Introduced-  N. America
 
 POPULATION DYNAMICS:
     STATE STATUS: Not listed
     FEDERAL STATUS: Not listed
     COMMONNESS:  Rare
 
 POPULATION STATUS COMMENTS:
     Species is adventive in Cook county.
 
 
 BIOLOGIC:
     HABIT:   Grasslike
     LIFE CYCLE:   Perennial
     REPRODUCTION:   Sexual   Vegetative
     FLOWERING PERIOD:
         MONTH BEGINNING-      7         MONTH END-      8
     TROPHIC STATUS:  Autotrophic
     SEX:      Perfect
 
 ECODISTRIBUTION COMMENTS:
     Species is distributed in disturbed, marshy areas.
 
 ENVIRONMENTAL RELATIONSHIPS:   No data entered
 
 FUNCTIONAL RELATIONSHIPS:
     MAJOR POLLINATION AGENT:   Wind
     MYCORRHIZAE:   no
 
 HUMAN RELATIONSHIP DATA:
     ALLERGENIC:  No
 
 
 WILDLIFE AND LIVESTOCK INFORMATION:   No data entered
 
 REVEGETATION PLANTINGS:
     WEEDINESS:   Non-weedy
 
 
 
 REFERENCES:
Mohlenbrock, R. H., ed.  1975.  Guide to the vascular flora of Illinois.
     Southern Illinois University Press, Carbondale.  494 pp.
Gleason, H. A.  1952.  The new Britton and Brown illustrated flora of the
     northeastern United States and adjacent Canada.  3 vols.  The New York
     Botanical Garden, New York.
 
 OTHER REFERENCES:
     Stuckey, R.L. 1980. The migration and establishment of Juncus gerardii
          (Juncaceae) in the interior of North America. Sida 8(4):334-347.
 
 END OF DATA FOR SPECIES  Juncus gerardii
 
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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