ILLINOIS PLANT INFORMATION NETWORK
 
 ILPIN INFORMATION ON    Osmunda claytoniana
 
 
 CLASS:    LEPTOSPORANGIOPSIDA
 ORDER:    FICALES
 FAMILY:   OSMUNDACEAE
 SCIENTIFIC NAME:  Osmunda claytoniana
 AUTHORITY:  L.
 
 COMMON NAMES:
    INTERRUPTED FERN
 
 SYNONOMY:   None
 
 PLANTS CODE: OSCL2
 
 NATURAL COMMUNITIES:
     FOREST
       UPLAND FOREST
         MESIC
       THICKETS
     PRAIRIE
       TYPICAL PRAIRIE
         MESIC
     PRIMARY
       BLUFF
         CLIFF (ROCKY BLUFF)
           SANDSTONE
 
 
 SAF FOREST COVER TYPE:
     NORTHERN
       Northern Hardwoods
           Sugar Maple-Basswood
 
 
 NATURAL DIVISION:
     Coastal Plain
        Cretaceous Hills
 
 COUNTIES:
   ADAMS           ALEXANDER       BROWN           BUREAU          CARROLL
   CASS            CHRISTIAN       CLARK           COLES           COOK
   CRAWFORD        CUMBERLAND      FULTON          GRUNDY          HANCOCK
   HENDERSON       IROQUOIS        JACKSON         JERSEY          JO DAVIESS
   KANE            KANKAKEE        KNOX            LAKE            LASALLE
   LEE             MCDONOUGH       MCHENRY         MADISON         MASON
   MENARD          OGLE            PEORIA          PIKE            POPE
   RANDOLPH        SCHUYLER        STARK           UNION           WABASH
   WHITESIDE       WILL            WINNEBAGO
 
 GROWTH FORM:  Fern-allies
 
 TAXONOMIC CHARACTERISTICS:
    ROOTS:  Adventitious   (fibrous)   (rhizomes)
    LEAF ARRANGEMENT:    Basal
    LEAF TYPE:    Compound  (pinnately)
    LEAF MARGIN:   Lobed  (pinnately)
    LEAF VENATION:  Pinnate
    LEAF SHAPE:       Oval
    INFLORESCENCE:           No
    FRUIT:   No
 
 DISTINGUISHING CHARACTERISTIC COMMENTS:
     Leaves are pinnate-pinnatifid; sporangia produced centrally between sterile
     pinnae; sparsely woolly.
 
 GEOGRAPHIC INFORMATION:
     ORIGIN:   Native
 
 POPULATION DYNAMICS:
     STATE STATUS: Not listed
     FEDERAL STATUS: Not listed
     COMMONNESS:  Occasional
     ENDEMIC:   NOT-ENDEMIC
 POPULATION STATUS COMMENTS:
     This species is rare in southern half.
 
 
 BIOLOGIC:
     HABIT:   Forb
     LIFE CYCLE:   Perennial
     REPRODUCTION:   Sexual   Vegetative
     TROPHIC STATUS:  Autotrophic
     C02 FIXATION:  C3
 
 ENVIRONMENTAL RELATIONSHIPS:   No data entered
 
 FUNCTIONAL RELATIONSHIPS:    No data entered
 HUMAN RELATIONSHIP DATA:
     SHOWY FLOWERS:  NO     LANDSCAPING:  YES
 
 WILDLIFE AND LIVESTOCK INFORMATION:   No data entered
 
 REVEGETATION PLANTINGS:    No data entered
 
 REVEGATATION COMMENTS:
     Species does well in shaded wild garden with loose rich humus and subneutral
     or somewhat acid soil.
 
 
 REFERENCES:
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.
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  Osmunda claytoniana
 
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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