ILLINOIS PLANT INFORMATION NETWORK
 
 ILPIN INFORMATION ON    Oenothera rhombipetala
 
 
 CLASS:    DICOTYLEDENAE
 ORDER:    MYRTALES
 FAMILY:   ONAGRACEAE
 SCIENTIFIC NAME:  Oenothera rhombipetala
 AUTHORITY:  Nutt.
 
 COMMON NAMES:
    SAND PRIMROSE
 
 SYNONOMY:   None
 
 PLANTS CODE: OERH
 
 NATURAL COMMUNITIES:
     PRAIRIE
       SAND PRAIRIE
         DRY
     SAVANNA
       SAND SAVANNA
         DRY
     CULTURAL
       SUCCESSIONAL FIELD
 
 
 SAF FOREST COVER TYPE:
     NO
 
 NATURAL DIVISION:  UNAVAILABLE
 
 COUNTIES:
   ADAMS           BUREAU          CARROLL         CASS            COOK
   EFFINGHAM       GRUNDY          HANCOCK         HENDERSON       HENRY
   IROQUOIS        JACKSON         JO DAVIESS      KANKAKEE        LAKE
   LASALLE         LEE             MCDONOUGH       MCHENRY         MADISON
   MASON           MENARD          MERCER          MORGAN          OGLE
   PEORIA          PIKE            PULASKI         PUTNAM          ROCK ISLAND
   ST. CLAIR       SCHUYLER        SCOTT           TAZEWELL        WHITESIDE
   WILL            WINNEBAGO       WOODFORD
 
 GROWTH FORM:  Dicot-herb
 
 TAXONOMIC CHARACTERISTICS:
    LEAF ARRANGEMENT:   Alternate
    LEAF TYPE:   Simple
    LEAF MARGIN:   Entire   Dentate
    LEAF VENATION:  Pinnate
    LEAF SHAPE:     Linear   Oblong   Lanceolate
    INFLORESCENCE:   Spike
    FLOWER MEROUS:  4
    FLOWER STRUCTURE:   Complete   Regular
    FLOWER COLOR:   Yellow
    FLOWER PLACEMENT:  Epigynous
    FRUIT:   Capsule
 
 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-      6         MONTH END-      9
     TROPHIC STATUS:  Autotrophic
     C02 FIXATION:  C3
     SEX:      Perfect
 
 ECODISTRIBUTION COMMENTS:
     Species is distributed in sandy soils.
 
 ENVIRONMENTAL RELATIONSHIPS:   No data entered
 
 FUNCTIONAL RELATIONSHIPS:    No data entered
 HUMAN RELATIONSHIP DATA:
     ALLERGENIC:  No
     EDIBLE:  Yes
     SHOWY FLOWERS:  YES      AMOUNT:  Medium
 
 
 HUMAN FACTOR COMMENTS:
     This species does not cause hayfever.
 
 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.
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  Oenothera rhombipetala
 
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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