ILLINOIS PLANT INFORMATION NETWORK
 
 ILPIN INFORMATION ON    Asclepias stenophylla
 
 
 CLASS:    DICOTYLEDENAE
 ORDER:    GENTIANALES
 FAMILY:   ASCLEPIADACEAE
 SCIENTIFIC NAME:  Asclepias stenophylla
 AUTHORITY:  Gray
 
 COMMON NAMES:
    NARROW-LEAVED GREEN MILKWEED
 
 SYNONOMY:
     Acerates angustifolia (Nutt.) Dcne.
     Polyotus angustifolius Nutt.
 
 PLANTS CODE: ASST
 
 NATURAL COMMUNITIES:
     FOREST
       UPLAND FOREST
         DRY
     PRAIRIE
       HILL PRAIRIE
         LOESS
     PRIMARY
       GLADE
         LIMESTONE
       BLUFF
         CLIFF (ROCKY BLUFF)
           LIMESTONE
 
 SAF FOREST COVER TYPE:  UNAVAILABLE
 
 
 NATURAL DIVISION:
     Middle Mississippi Border
        Glaciated
        Driftless
 
 COUNTIES:
   ADAMS           CALHOUN         PIKE
 
 GROWTH FORM:  Dicot-herb
 
 TAXONOMIC CHARACTERISTICS:
    ROOTS:  Primary
    LEAF ARRANGEMENT:   Alternate     Opposite
    LEAF TYPE:   Simple
    LEAF MARGIN:   Entire
    LEAF VENATION:  Pinnate
    LEAF SHAPE:     Linear
    INFLORESCENCE:   Umbel
    FLOWER MEROUS:  5
    FLOWER STRUCTURE:   Complete   Regular
    FLOWER COLOR:   Green   White
    FLOWER PLACEMENT:  Hypogynous
    FRUIT:   Follicle
 
 GEOGRAPHIC INFORMATION:
     ORIGIN:   Native
 
 GEOGRAPHIC COMMENTS:
     Northeastern range limit.
 
 POPULATION DYNAMICS:
     STATE STATUS: Threatened-ST
     FEDERAL STATUS: Not listed
     COMMONNESS:  Uncommon
     ENDEMIC:   NOT-ENDEMIC
 
 BIOLOGIC:
     HABIT:   Forb
     LIFE CYCLE:   Perennial
     REPRODUCTION:   Sexual
     FLOWERING PERIOD:
         MONTH BEGINNING-      6         MONTH END-      7
     TROPHIC STATUS:  Autotrophic
     C02 FIXATION:  C3
     SEX:      Perfect
 
 ENVIRONMENTAL RELATIONSHIPS:
     GROWTH OF SPECIES IN VARIOUS CONDITIONS:
          GRAVEL         No data entered    SAND           No data entered
          SANDY LOAM     No data entered    LOAM           No data entered
          CLAY LOAM      No data entered    CLAY           No data entered
          DENSE CLAY     No data entered    ORGANIC SOIL   No data entered
          NEUTRAL pH     No data entered    ACIDIC SOIL    No data entered
          EXTREMELY ACID No data entered    SALINE SOIL    No data entered
          SODIC SOIL     No data entered    SODIC-SALINE   No data entered
          ROCKY OUTCROPS Good               GENTLE SLOPES  No data entered
          MODERATE SLOPE No data entered    STEEP SLOPES   No data entered
     HABITAT:   Dry
 
 FUNCTIONAL RELATIONSHIPS:
     MAJOR DISPERSAL AGENTS:   WIND
     MAJOR POLLINATION AGENT:   INSECT
 
 HUMAN RELATIONSHIP DATA:
     SHOWY FLOWERS:  YES      AMOUNT:  Medium
     LANDSCAPING:  NO
 
 WILDLIFE AND LIVESTOCK INFORMATION:
     FOOD VALUE:  No data entered
     COVER VALUE:  No data entered
 
 LIVESTOCK PALATABILITY DATA:
     CATTLE FORAGE: No data    SHEEP FORAGE:  No data    HORSE FORAGE:  No data
     GOAT FORAGE:   No data    ENERGY VALUE:  No data    PROTEIN VALUE: No data
     POISONOUS (LIVESTOCK):   Suspect
 
 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.
Fernald, M. L.  1950.  Gray's manual of botany.  8th ed.  American Book Co.,
     New York.  1632 pp.
Porter, C. L.  1967.  Taxonomy of flowering plants.  W. H. Freeman and
     Company, San Francisco.  472 pp.
Sheviak, C. J.  1981.  Endangered and threatened plants.  Pages 70-179 in M.
     L. Bowles, V. E. Diersing, and J. E. Ebinger, eds., Endangered and
     threatened vertebrate animals and vascular plants of Illinois.  Illinois
     Department of Conservation, Springfield.
Downton, W. J. S.  1975.  The occurrence of C4 photosynthesis among plants.
     Photosynthetica 9(1): 96-105.
Smith, J. P.  1977.  Vascular plant families.  Mad River Press, Inc., Eureka,
     California.  320 pp.
 
 OTHER REFERENCES:
     Woodson, R. E.  1954.  The North American species of Asclepias L.  Annals of
          the Missouri Botanical Garden 41: 1-211.
     Evers, R. A.  1955.  Hill prairies of Illinois.  Illinois Natural History
          Survey Bulletin 26: 367-446.
 
 END OF DATA FOR SPECIES  Asclepias stenophylla
 
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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