Conium maculatum

Characteristics
Dicots
Conium maculatum L.
Poison Hemlock
forb
1
**
Not Native AGCP (FACW), EMP (FACW) (NWPL) TN[SNA] KY[SNA] (State Rank) G5 (Global Rank)
Armaments
No
Base Flower Color
White
Carpel Number/Pistil
2
Duration
Biennial
Fruit Dehiscence
No
Fruit Type
Schizocarp
Fruit Wet/Dry
Dry
General Ecology
Terrestrial
Growth Habit
forb
Inflorescence Position
terminal
Inflorescence Types
umbel
Leaf Arrangement
alternate
Leaf Complexity
compound
Leaf Dissection
2.5
Leaf Duration
deciduous
Leaf Petiole Type
petiolate
Leaf Type
broadleaf
Leaf Venation
pinnate
Leaflet Margins
entire; lobed
Leaflet Number
>20
Moisture Requirements
Mesic; Hydric
Ovary Position
Inferior
Overall Flower Symmetry
Actinomorphic
Ovules per Carpel
2
Parent Rock
Calcareous; Limestone
Perianth Present
Yes
Petal Fusion
No
Petal Number
5
Pistil Complexity
Compound
Pistil Number
1
Placentation Type
Axillary
Sepal Fusion
No
Sepal Number
0; 5
Soil Composition
Mineral
Soil pH
Alkaline
Stamen Number
5
Unconsolidated Rock
Yes
Woody Herbaceous
Herbaceous
Classification
Apiales
Conium maculatum L. - Poison Hemlock
Species Distribution Map

This species has been reported in the counties highlighted in the interactive distribution map below. Click on a county to display its name.

Click the question mark icon () to view additional information about the ecoregions shown. In the map legend, there are links to toggle the visibility of the ecoregions and/or their labels. In addition, clicking on an ecoregion name will highlight that region on the map.

  • Southeastern Plains
    • Blackland Prarie
  • Blue Ridge Mountains
  • Ridge and Valley
  • Cumberland Plateau
  • Cumberland Mountains
  • Allegheny Plateau
  • Interior Plateau
    • Bluegrass Region
    • Nashville Basin
    • Pennyroyal Karst Plain
    • Western Highland Rim
    • Eastern Highland Rim
  • Interior River Valleys and Hills
    • Shawnee / Caseyville Hills
  • Mississippi Alluvial Plain
  • Mississippi Valley Loess Plains
Synonyms
Specimens and Distribution

Click on an Accession Number to view additional details about the specimen.

Range of years during which specimens were collected:

Plant Photos
Conium maculatum - 13
Conium maculatum - Dwayne Estes
Conium maculatum - 13
Conium maculatum - Dwayne Estes
Conium maculatum - 13
Conium maculatum - Dwayne Estes