Conium maculatum

ClassificationDicots
FamilyApiaceae
Family (Traditional)Apiaceae
GenusConium
Species:Conium maculatum L.
Common NamePoison Hemlock
Growth Habitforb
Plant Notes**
CharacteristicsArmaments: No; Milky Sap: No; Photosynthetic: Yes; Stipules: No; Woody Herbaceous: Herbaceous; Duration: Biennial; General Ecology: Terrestrial; Growth Habit: forb; Moisture Requirements: Dry-mesic; Moisture Requirements: Mesic; Region of Origin: Asia; Region of Origin: Europe; Reproductive Phenology: May; Reproductive Phenology: June; Reproductive Phenology: July; Leaf Arrangement: alternate; Leaf Complexity: compound; Leaf Dissection: 2.5; Leaf Persistance: Deciduous; Leaf Petiole Type: petiolate; Leaf Type: broadleaf; Leaf Venation: pinnate; Leaflet Margins: entire; Leaflet Margins: lobed; Leaflet Number: 20+; Base Flower Color: White; Carpel Number/Pistil: 2; Fruit Dehiscence: No; Fruit Type: Schizocarp; Fruit Wet/Dry: Dry; Hypanthium Present: No; Inflorescence Position: terminal; Inflorescence Types: corymb/cyme/umbel; Ovary Position: Inferior; Overall Flower Symmetry: Actinomorphic; Ovules per Carpel: 2; Perianth Present: Yes; Petal Fusion: No; Petal Number: 5; Pistil Complexity: Compound; Pistil Number: 1; Placentation Type: Axillary; Sepal Fusion: No; Sepal Number: 0; Sepal Number: 5; Sexuality: monoclinous; Sporangium Arrangement: N/A; Stamen Number: 5; Tepal Fusion: N/A; Tepal Number: N/A
C value N/A
StatusNot Native; AGCP (FACW), EMP (FACW) (NWPL); TN[SNA] KY[SNA] (State Rank); G5 (Global Rank)
Specimen(s) View and Download Specimen Details »

** Not applicable or data not available.

Species Distribution Map

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

  • State Boundaries
  • Counties
  • Counties - Species Present
Ecoregions
  • 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

Synonyms

SynonymFull Citation
Conium divaricatum Conium divaricatum

Specimens and Distribution

This species has been reported in the following counties by the herbaria listed. An overview of the individual specimens are provided in the table that follows. Click on the accession number to view details; click on column headers to sort.

Counties included on distribution map: Anderson (KY), Barren (KY), Bath (KY), Clark (KY), Clinton (KY), Estill (KY), Fayette (KY), Franklin (KY), Garrard (KY), Harlan (KY), Hart (KY), Jefferson (KY), Jessamine (KY), Lewis (KY), Madison (KY), Magoffin (KY), Marion (KY), Martin (KY), Menifee (KY), Mercer (KY), Metcalfe (KY), Montgomery (KY), Nicholas (KY), Oldham (KY), Powell (KY), Robertson (KY), Rockcastle (KY), Taylor (KY), Warren (KY), Woodford (KY), Bedford (TN), Cannon (TN), Carroll (TN), Carter (TN), Cheatham (TN), Cocke (TN), Davidson (TN), DeKalb (TN), Dickson (TN), Franklin (TN), Giles (TN), Hancock (TN), Humphreys (TN), Knox (TN), Maury (TN), Montgomery (TN), Moore (TN), Morgan (TN), Putnam (TN), Robertson (TN), Rutherford (TN), Sequatchie (TN), Stewart (TN), Sumner (TN), Unicoi (TN), Washington (TN), Williamson (TN)

Herbaria represented by specimen data listed below: APSC, BEREA, BOON, EKY, ETSU, HTTU, MTSU, TENN, UCHT, UOS, VDB

Range of years during which specimens were collected: 1956 - 2014

Accession No. (click for full details) County State Coll. Date Collector &
Collection No.
Herbarium &
Herbarium Name Used
31234100200466 Lewis Kentucky 19 May 2005 Timothy J. Weckman
9334
EKY
Conium maculatum
31234100200474 Madison Kentucky 04 Jun 1993 Gary W. Libby
OB-371
EKY
Conium maculatum
31234100200391 Fayette Kentucky Danny Husband
442
EKY
Conium maculatum
31234100200342 Anderson Kentucky 14 Jun 1978 William S. Bryant
542
EKY
Conium maculatum
31234100200524 Madison Kentucky 20 Jun 1978 Elizabeth M. Browne
78D3.1
EKY
Conium maculatum
31234100200458 Jessamine Kentucky 28 May 1978 Johnnie B. Varner
11760
EKY
Conium maculatum
31234100200599 Mercer Kentucky 22 Jun 1991 David D. Taylor
15747
EKY
Conium maculatum
N/A Garrard Kentucky 21 Mar 2007 Doty M. Mason
8
EKY
Conium maculatum
31234100200607 Powell Kentucky 16 Jun 1994 Deborah White
EKY
Conium maculatum
31234100200409 Fayette Kentucky 19 May 1965 Elizabeth M. Browne
10039
EKY
Conium maculatum
31234100200433 Franklin Kentucky 08 Jun 1976 W. E. B.
FR-239
EKY
Conium maculatum
31234100200540 Marion Kentucky 02 Apr 1994 M. H. McGuffey
9
EKY
Conium maculatum
31234100200532 Madison Kentucky 28 May 1982 Ronald L. Jones
3618
EKY
Conium maculatum
31234100200326 Anderson Kentucky 01 Jun 1956 Mary E. Wharton
9976
EKY
Conium maculatum
31234100200417 Fayette Kentucky 26 Jun 1961 Elizabeth M. Browne
4302
EKY
Conium maculatum
31234100200359 Clark Kentucky 29 Apr 2007 Jessica Tompkins
s.n.
EKY
Conium maculatum
31234100200383 Estill Kentucky 27 Apr 2007 Wes McFaddin
33
EKY
Conium maculatum
31234100200367 Clinton Kentucky 07 Jul 1999 Mark A. Gorton
99-468
EKY
Conium maculatum
31234100200581 Menifee Kentucky 01 Jun 1989 Carol Hanley
420
EKY
Conium maculatum
31234100200334 Anderson Kentucky 08 Jun 1963 Elizabeth M. Browne
7130
EKY
Conium maculatum
31234100200490 Madison Kentucky 28 May 1982 Ronald L. Jones
3618
EKY
Conium maculatum
31234100200482 Madison Kentucky 23 Apr 2005 Stacy Lackey
9
EKY
Conium maculatum
31234100200557 Marion Kentucky 03 Apr 1999 Ross C. Clark
24153
EKY
Conium maculatum
31234100200508 Madison Kentucky 15 Jun 1973 J. Stuart Lassetter
1965
EKY
Conium maculatum
31234100200516 Madison Kentucky 15 Jun 1973 J. Stuart Lassetter
1965
EKY
Conium maculatum
31234100200573 Montgomery Kentucky 13 Jul 1984 Julian Campbell
662
EKY
Conium maculatum
31234100200631 Woodford Kentucky 04 Jun 1993 Judith E. Rozeman
395
EKY
Conium maculatum
31234100200615 Robertson Kentucky 20 Jun 2002 Timothy J. Weckman
7308
EKY
Conium maculatum
31234100200045 Magoffin Kentucky 21 Jul 1964 Elizabeth M. Browne
8883
EKY
Conium maculatum
31234100200565 Martin Kentucky 23 Jul 1964 Elizabeth M. Browne
8987
EKY
Conium maculatum
31234100765161 Madison Kentucky 23 May 2014 Thomas S. McFadden
18
EKY
Conium maculatum
31234100200441 Franklin Kentucky 29 May 1981 John MacGregor
FR-418
EKY
Conium maculatum
31234100200623 Robertson Kentucky 15 May 2002 Timothy J. Weckman
6973
EKY
Conium maculatum
31234100200375 Estill Kentucky 02 Jun 1987 Richard G. Guetig
140
EKY
Conium maculatum
31234100200425 Franklin Kentucky 15 Jun 1980 Donald K. Walker
255
EKY
Conium maculatum
BEREA001732 Madison Kentucky
BEREA
Conium maculatum
BEREA001738 Woodford Kentucky
BEREA
Conium maculatum
BEREA001735 Madison Kentucky
BEREA
Conium maculatum
BEREA001736 Madison Kentucky
BEREA
Conium maculatum
BEREA024078 Nicholas Kentucky
BEREA
Conium maculatum
BEREA001737 Woodford Kentucky
BEREA
Conium maculatum
BEREA001734 Madison Kentucky
BEREA
Conium maculatum
BEREA001733 Madison Kentucky
BEREA
Conium maculatum
BEREA023514 Fayette Kentucky 07 Jul 2012 Ralph L. Thompson
12-846
BEREA
Conium maculatum
BEREA024077 Montgomery Kentucky
BEREA
Conium maculatum
BEREA023473 Harlan Kentucky
BEREA
Conium maculatum
BEREA001731 Madison Kentucky
BEREA
Conium maculatum
BEREA024076 Bath Kentucky
BEREA
Conium maculatum
BEREA001730 Madison Kentucky
BEREA
Conium maculatum
ETSU007890 Carter Tennessee
ETSU
Conium maculatum
ETSU007891 Carter Tennessee
ETSU
Conium maculatum
TENN-V-0161008 Anderson Kentucky
TENN
Conium maculatum
TENN-V-0160981 Cheatham Tennessee
TENN
Conium maculatum
TENN-V-0161011 Martin Kentucky
TENN
Conium maculatum
TENN-V-0160990 Robertson Tennessee
TENN
Conium maculatum
TENN-V-0160984 Giles Tennessee
TENN
Conium maculatum
TENN-V-0160999 Williamson Tennessee
TENN
Conium maculatum
TENN-V-0160996 Unicoi Tennessee
TENN
Conium maculatum
TENN-V-0160995 Sumner Tennessee
TENN
Conium maculatum
TENN-V-0160994 Stewart Tennessee
TENN
Conium maculatum
TENN-V-0160987 Knox Tennessee
TENN
Conium maculatum
TENN-V-0160982 Cocke Tennessee
TENN
Conium maculatum
TENN-V-0160998 Washington Tennessee
TENN
Conium maculatum
TENN-V-0160992 Rutherford Tennessee
TENN
Conium maculatum
TENN-V-0160978 Cannon Tennessee
TENN
Conium maculatum
TENN-V-0160988 Moore Tennessee
TENN
Conium maculatum
TENN-V-0160985 Giles Tennessee
TENN
Conium maculatum
TENN-V-0160983 Giles Tennessee
TENN
Conium maculatum
TENN-V-0160991 Rutherford Tennessee
TENN
Conium maculatum
TENN-V-0160980 Cheatham Tennessee
TENN
Conium maculatum
TENN-V-0161009 Jessamine Kentucky
TENN
Conium maculatum
TENN-V-0160997 Unicoi Tennessee
TENN
Conium maculatum
TENN-V-0160989 Morgan Tennessee
TENN
Conium maculatum
TENN-V-0160977 Bedford Tennessee
TENN
Conium maculatum
TENN-V-0160986 Knox Tennessee
TENN
Conium maculatum
TENN-V-0160979 Carroll Tennessee
TENN
Conium maculatum
TENN-V-0160993 Rutherford Tennessee
TENN
Conium maculatum
TENN-V-0161010 Madison Kentucky
TENN
Conium maculatum
UCHT021325 Maury Tennessee
UCHT
Conium maculatum
UCHT021329 Unicoi Tennessee
UCHT
Conium maculatum
UCHT021326 Maury Tennessee
UCHT
Conium maculatum
APSC0057769 Barren Kentucky 13 Jun 1979 G.P. Johnson
APSC
Conium maculatum
APSC0029953 Hancock Tennessee
APSC
Conium maculatum
APSC0057768 Hart Kentucky
APSC
Conium maculatum
APSC0096289 Taylor Kentucky 12 May 2012 Ralph Thompson
APSC
Conium maculatum
HTTU001558 Putnam Tennessee
HTTU
Conium maculatum
MTSU023269 Davidson Tennessee
MTSU
Conium maculatum
UCHT036999 Sequatchie Tennessee
UCHT
Conium maculatum
UOS00298 Franklin Tennessee 24 Jun 1999 Mary P. Priestley
UOS
Conium maculatum
BRIT72576 Maury Tennessee
VDB
Conium maculatum
BRIT72579 Robertson Tennessee
VDB
Conium maculatum
APSC0051619 Maury Tennessee
APSC
Conium maculatum
APSC0057695 Warren Kentucky
APSC
Conium maculatum
BRIT72561 Cannon Tennessee
VDB
Conium maculatum
BEREA024256 Rockcastle Kentucky
BEREA
Conium maculatum
ETSU032153 Washington Tennessee James T Donaldson
ETSU
Conium maculatum
UCHT021328 Unicoi Tennessee
UCHT
Conium maculatum
APSC0103745 Fayette Kentucky
APSC
Conium maculatum
APSC0029947 Stewart Tennessee
APSC
Conium maculatum
MTSU023274 Rutherford Tennessee
MTSU
Conium maculatum
MTSU023273 Tennessee
MTSU
Conium maculatum
BRIT72580 Williamson Tennessee
VDB
Conium maculatum
BRIT72574 Giles Tennessee
VDB
Conium maculatum
BEREA024254 Metcalfe Kentucky
BEREA
Conium maculatum
UCHT021324 Giles Tennessee
UCHT
Conium maculatum
MTSU023276 Rutherford Tennessee
MTSU
Conium maculatum
BRIT72573 Giles Tennessee
VDB
Conium maculatum
BRIT72575 Giles Tennessee
VDB
Conium maculatum
BRIT72571 Maury Tennessee
VDB
Conium maculatum
BEREA025365 Rockcastle Kentucky
BEREA
Conium maculatum
BEREA024111 Harlan Kentucky
BEREA
Conium maculatum
010872 Carroll Tennessee 09 Jul 1972 Betty Toler Allman
655
BOON
Conium maculatum
APSC0029951 Robertson Tennessee
APSC
Conium maculatum
APSC0029948 Stewart Tennessee
APSC
Conium maculatum
BRIT72564 Dickson Tennessee
VDB
Conium maculatum
BRIT72566 Giles Tennessee
VDB
Conium maculatum
BRIT72577 Maury Tennessee
VDB
Conium maculatum
BRIT72570 Maury Tennessee
VDB
Conium maculatum
BRIT72572 Maury Tennessee
VDB
Conium maculatum
UCHT021323 Giles Tennessee
UCHT
Conium maculatum
UCHT021327 Moore Tennessee
UCHT
Conium maculatum
BEREA024563 Taylor Kentucky
BEREA
Conium maculatum
APSC0029950 Montgomery Tennessee 08 Jun 1988 Edward Chester
APSC
Conium maculatum
APSC0060931 Oldham Kentucky
APSC
Conium maculatum
APSC0045183 Maury Tennessee
APSC
Conium maculatum
HTTU001559 Tennessee
HTTU
Conium maculatum
MTSU023271 Tennessee
MTSU
Conium maculatum
MTSU023272 DeKalb Tennessee
MTSU
Conium maculatum
MTSU023270 Davidson Tennessee
MTSU
Conium maculatum
MTSU023275 Rutherford Tennessee
MTSU
Conium maculatum
BRIT72568 Maury Tennessee
VDB
Conium maculatum
BRIT72562 Carroll Tennessee
VDB
Conium maculatum
BRIT72578 Morgan Tennessee
VDB
Conium maculatum
BRIT72567 Maury Tennessee
VDB
Conium maculatum
APSC0029952 Cocke Tennessee
APSC
Conium maculatum
APSC0029949 Humphreys Tennessee
APSC
Conium maculatum
APSC0057694 Warren Kentucky
APSC
Conium maculatum
HTTU001557 Morgan Tennessee
HTTU
Conium maculatum
HTTU008300 DeKalb Tennessee
HTTU
Conium maculatum
MTSU024428 Putnam Tennessee
MTSU
Conium maculatum
TENN-V-0243790 Knox Tennessee
TENN
Conium maculatum
TENN-V-0243789 Knox Tennessee
TENN
Conium maculatum
BRIT72569 Maury Tennessee
VDB
Conium maculatum
BRIT72563 Cocke Tennessee
VDB
Conium maculatum
MTSU023277 Tennessee
MTSU
Conium maculatum
BRIT72565 Franklin Tennessee
VDB
Conium maculatum
ETSU032152 Washington Tennessee James T Donaldson
ETSU
Conium maculatum
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Plant Photos

Conium maculatum - Dwayne Estes
Conium maculatum - Dwayne Estes
Conium maculatum - Dwayne Estes
Conium maculatum - Dwayne Estes
Conium maculatum - Dwayne Estes
Conium maculatum - Dwayne Estes