Hypericum perforatum

ClassificationDicots
FamilyHypericaceae
Family (Traditional)
GenusHypericum
SpeciesHypericum perforatum L.
Common Namecommon St. Johnswort, Klamath weed
Growth Habitforb
Plant NotesHabit: forb; Woody/Herbaceous: herbaceous; Terrestrial/Aquatic: Terrestrial;
Leaf Arrangement: Opposite; Simple/Compound: Simple; Leaf Complexity: 0;
Hypanthium: No; Perianth Absent: No; Fruit Color: ;
*Average C-Value: 0.1
C value N/A
StatusNot Native; AGCP (FACU), EMP (FAC) (NWPL); GNR (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

No synonyms exist for this species.

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), Ballard (KY), Bracken (KY), Breckinridge (KY), Caldwell (KY), Campbell (KY), Carter (KY), Clinton (KY), Crittenden (KY), Fayette (KY), Fleming (KY), Franklin (KY), Grant (KY), Graves (KY), Harlan (KY), Henry (KY), Jefferson (KY), Kenton (KY), Laurel (KY), Lewis (KY), Lincoln (KY), Logan (KY), Lyon (KY), McCracken (KY), McLean (KY), Madison (KY), Magoffin (KY), Marshall (KY), Meade (KY), Menifee (KY), Muhlenberg (KY), Oldham (KY), Pendleton (KY), Pulaski (KY), Robertson (KY), Rowan (KY), Scott (KY), Shelby (KY), Todd (KY), Trigg (KY), Trimble (KY), Woodford (KY), Anderson (TN), Bedford (TN), Blount (TN), Bradley (TN), Campbell (TN), Cannon (TN), Carter (TN), Chester (TN), Claiborne (TN), Cocke (TN), Cumberland (TN), Davidson (TN), DeKalb (TN), Dickson (TN), Fentress (TN), Franklin (TN), Giles (TN), Grainger (TN), Greene (TN), Hamblen (TN), Hardin (TN), Haywood (TN), Henry (TN), Houston (TN), Humphreys (TN), Jefferson (TN), Knox (TN), Loudon (TN), McMinn (TN), Marshall (TN), Montgomery (TN), Morgan (TN), Polk (TN), Putnam (TN), Roane (TN), Rutherford (TN), Sevier (TN), Stewart (TN), Sullivan (TN), Sumner (TN), Unicoi (TN), Union (TN), Van Buren (TN), White (TN), Williamson (TN)

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

Range of years during which specimens were collected: 1955 - 2016

Accession No. (click for full details) County State Coll. Date Collector &
Collection No.
Herbarium &
Herbarium Name Used
31234100766342 Madison Kentucky 13 Aug 2015 Thomas S. McFadden
154
EKY
Hypericum perforatum
31234100491057 Robertson Kentucky 20 Jun 2002 Timothy J. Weckman
7346
EKY
Hypericum perforatum
31234100490943 Logan Kentucky 11 Jun 1980 Richard H. Hannan
4074
EKY
Hypericum perforatum
31234100490935 Lincoln Kentucky 19 Jul 1988 Bruce Hoagland
398
EKY
Hypericum perforatum
31234100490968 Madison Kentucky 15 Jul 1989 Ronald L. Jones
EKY
Hypericum perforatum
31234100491008 Magoffin Kentucky 21 Jun 1979 Richard H. Hannan
2462
EKY
Hypericum perforatum
31234100490836 Fleming Kentucky 01 Jul 2003 Ronald L. Jones
9437
EKY
Hypericum perforatum
31234100491016 McLean Kentucky 31 Jul 1980 Richard H. Hannan
4834
EKY
Hypericum perforatum
31234100490927 Kenton Kentucky 02 Jun 2001 John W. Thieret
61133
EKY
Hypericum perforatum
31234100490901 Henry Kentucky 23 Jun 1962 J. L. Gentry Jr.
334
EKY
Hypericum perforatum
31234100490877 Franklin Kentucky 11 Jun 1957 Mary E. Wharton
10829
EKY
Hypericum perforatum
31234100490851 Franklin Kentucky 11 Jul 1979 John MacGregor
FR-91
EKY
Hypericum perforatum
31234100491073 Trigg Kentucky 16 Jul 1984 Raymond Athey
4947
EKY
Hypericum perforatum
31234100491081 Hamblen Tennessee 26 Jun 1975 R. Dale Thomas
45479
EKY
Hypericum perforatum
31234100491032 Robertson Kentucky 05 Jul 1999 Ross C. Clark
24996
EKY
Hypericum perforatum
31234100490919 Henry Kentucky 19 Jul 1962 Elizabeth M. Browne
5974
EKY
Hypericum perforatum
31234100490950 Lyon Kentucky 15 Jul 1972 Sallie Porter
286
EKY
Hypericum perforatum
31234100490992 Madison Kentucky 14 Jul 1993 Gary W. Libby
OB-518B
EKY
Hypericum perforatum
31234100490984 Madison Kentucky 28 Jun 1982 Ronald L. Jones
3703
EKY
Hypericum perforatum
31234100490828 Clinton Kentucky 12 Jul 2000 Mark A. Gorton
00-512
EKY
Hypericum perforatum
31234100491024 Menifee Kentucky 11 Jul 1989 Carol Hanley
94
EKY
Hypericum perforatum
31234100490844 Franklin Kentucky 22 Jun 1995 D. L. White
EKY
Hypericum perforatum
31234100491065 Rowan Kentucky 30 Jun 1990 Ronald L. Jones
6476
EKY
Hypericum perforatum
31234100490976 Madison Kentucky 12 Jun 1993 Susan Wind
82
EKY
Hypericum perforatum
31234100490869 Franklin Kentucky 19 Jun 1980 Hal Bryan
FR-359
EKY
Hypericum perforatum
31234100766334 Madison Kentucky 15 Sep 2015 Thomas S. McFadden
184
EKY
Hypericum perforatum
31234100766326 Madison Kentucky 30 Jul 2016 Thomas McFadden
258
EKY
Hypericum perforatum
31234100490893 Harlan Kentucky 17 Jul 1996 Bryce D. Fields
890
EKY
Hypericum perforatum
31234100491040 Robertson Kentucky 20 Jun 2002 Timothy J. Weckman
7302
EKY
Hypericum perforatum
31234100490885 Franklin Kentucky 18 Jun 1981 Steven Rice
FR-374
EKY
Hypericum perforatum
31234100491115 Jefferson Tennessee 21 Jun 1979 B. Eugene Wofford
79-121
EKY
Hypericum perforatum
BEREA015366 Pulaski Kentucky
BEREA
Hypericum perforatum
BEREA015361 Madison Kentucky
BEREA
Hypericum perforatum
BEREA015363 Madison Kentucky
BEREA
Hypericum perforatum
BEREA015364 Madison Kentucky
BEREA
Hypericum perforatum
ETSU008480 Carter Tennessee
ETSU
Hypericum perforatum
N/A Carter Tennessee 17 Jun 2011 Frosty Levy
ETSU
Hypericum perforatum
N/A Unicoi Tennessee 07 Jun 2014 Frosty Levy
ETSU
Hypericum perforatum
31973000009136 Kenton Kentucky
KNK
Hypericum perforatum
31973000009133 Grant Kentucky 28 Jul 2007 Whitson, Maggie (Mary)
2007-0011 1/2
KNK
Hypericum perforatum
31973000009134 Lewis Kentucky
KNK
Hypericum perforatum
31973000009132 Grant Kentucky
KNK
Hypericum perforatum
BEREA015367 Trigg Kentucky
BEREA
Hypericum perforatum
BEREA015365 Madison Kentucky
BEREA
Hypericum perforatum
BEREA015362 Madison Kentucky
BEREA
Hypericum perforatum
BEREA015360 Laurel Kentucky
BEREA
Hypericum perforatum
31973000020113 Campbell Kentucky 08 Jun 2015 Marksberry, Hope
s.n. 1/2
KNK
Hypericum perforatum
31973000004060 Bracken Kentucky 21 Jul 2013 Whitson, Maggie (Mary)
2013-0026
KNK
Hypericum perforatum
31973000009135 Pendleton Kentucky
KNK
Hypericum perforatum
MDKY00009438 Rowan Kentucky
MDKY
Hypericum perforatum
MDKY00009437 Henry Kentucky
MDKY
Hypericum perforatum
MDKY00009430 Carter Kentucky
MDKY
Hypericum perforatum
TENN-V-0148974 Fentress Tennessee
TENN
Hypericum perforatum
TENN-V-0148983 Knox Tennessee
TENN
Hypericum perforatum
TENN-V-0148980 Haywood Tennessee
TENN
Hypericum perforatum
TENN-V-0148993 Polk Tennessee
TENN
Hypericum perforatum
TENN-V-0150391 Trigg Kentucky
TENN
Hypericum perforatum
MDKY00009434 Carter Kentucky
MDKY
Hypericum perforatum
MDKY00009431 Carter Kentucky
MDKY
Hypericum perforatum
MDKY00009436 Henry Kentucky
MDKY
Hypericum perforatum
MDKY00009433 Carter Kentucky
MDKY
Hypericum perforatum
MDKY00009486 Carter Kentucky
MDKY
Hypericum perforatum
MDKY00009432 Carter Kentucky
MDKY
Hypericum perforatum
MDKY00009435 Rowan Kentucky
MDKY
Hypericum perforatum
TENN-V-0150407 Carter Kentucky
TENN
Hypericum perforatum
TENN-V-0148999 Sullivan Tennessee
TENN
Hypericum perforatum
TENN-V-0148970 Cocke Tennessee
TENN
Hypericum perforatum
TENN-V-0148989 Morgan Tennessee
TENN
Hypericum perforatum
TENN-V-0150388 Harlan Kentucky
TENN
Hypericum perforatum
TENN-V-0148997 Sevier Tennessee
TENN
Hypericum perforatum
TENN-V-0149001 Sumner Tennessee
TENN
Hypericum perforatum
TENN-V-0148995 Roane Tennessee
TENN
Hypericum perforatum
TENN-V-0148969 Claiborne Tennessee
TENN
Hypericum perforatum
TENN-V-0148347 Franklin Tennessee
TENN
Hypericum perforatum
TENN-V-0149004 Williamson Tennessee
TENN
Hypericum perforatum
TENN-V-0148984 Loudon Tennessee
TENN
Hypericum perforatum
TENN-V-0149002 Van Buren Tennessee
TENN
Hypericum perforatum
TENN-V-0148996 Sevier Tennessee
TENN
Hypericum perforatum
TENN-V-0148967 Carter Tennessee
TENN
Hypericum perforatum
TENN-V-0148960 Anderson Tennessee
TENN
Hypericum perforatum
TENN-V-0148973 Dickson Tennessee
TENN
Hypericum perforatum
TENN-V-0148986 Marshall Tennessee
TENN
Hypericum perforatum
TENN-V-0148994 Putnam Tennessee
TENN
Hypericum perforatum
TENN-V-0150389 McCracken Kentucky
TENN
Hypericum perforatum
TENN-V-0148987 McMinn Tennessee
TENN
Hypericum perforatum
TENN-V-0148978 Hamblen Tennessee
TENN
Hypericum perforatum
TENN-V-0148985 Marshall Tennessee
TENN
Hypericum perforatum
TENN-V-0148975 Giles Tennessee
TENN
Hypericum perforatum
TENN-V-0149000 Sumner Tennessee
TENN
Hypericum perforatum
TENN-V-0148982 Jefferson Tennessee
TENN
Hypericum perforatum
TENN-V-0148964 Blount Tennessee
TENN
Hypericum perforatum
TENN-V-0148976 Grainger Tennessee
TENN
Hypericum perforatum
TENN-V-0148998 Sullivan Tennessee
TENN
Hypericum perforatum
TENN-V-0149003 Van Buren Tennessee
TENN
Hypericum perforatum
TENN-V-0148962 Bedford Tennessee
TENN
Hypericum perforatum
TENN-V-0148977 Greene Tennessee
TENN
Hypericum perforatum
TENN-V-0148981 Henry Tennessee
TENN
Hypericum perforatum
TENN-V-0150387 Caldwell Kentucky
TENN
Hypericum perforatum
TENN-V-0148966 Campbell Tennessee
TENN
Hypericum perforatum
TENN-V-0148972 Dickson Tennessee
TENN
Hypericum perforatum
TENN-V-0150390 McCracken Kentucky
TENN
Hypericum perforatum
TENN-V-0148961 Anderson Tennessee
TENN
Hypericum perforatum
TENN-V-0148965 Campbell Tennessee
TENN
Hypericum perforatum
TENN-V-0148968 Carter Tennessee
TENN
Hypericum perforatum
TENN-V-0148971 Cumberland Tennessee
TENN
Hypericum perforatum
TENN-V-0148988 Montgomery Tennessee
TENN
Hypericum perforatum
TENN-V-0148963 Blount Tennessee
TENN
Hypericum perforatum
TENN-V-0148979 Hardin Tennessee
TENN
Hypericum perforatum
UCHT020720 Polk Tennessee
UCHT
Hypericum perforatum
APSC0016348 Lyon Kentucky
APSC
Hypericum perforatum
APSC0100238 Breckinridge Kentucky
APSC
Hypericum perforatum
APSC0016339 Montgomery Tennessee
APSC
Hypericum perforatum
APSC0086745 Graves Kentucky
APSC
Hypericum perforatum
APSC0068878 Shelby Kentucky
APSC
Hypericum perforatum
APSC0080264 Campbell Kentucky
APSC
Hypericum perforatum
APSC0086744 Trimble Kentucky
APSC
Hypericum perforatum
APSC0016344 Stewart Tennessee
APSC
Hypericum perforatum
APSC0016346 Lyon Kentucky
APSC
Hypericum perforatum
TENN-V-0150408 Carter Kentucky
TENN
Hypericum perforatum
TENN-V-0150418 Henry Kentucky
TENN
Hypericum perforatum
APSC0016335 Montgomery Tennessee
APSC
Hypericum perforatum
APSC0119660 Lincoln Kentucky
APSC
Hypericum perforatum
APSC0016340 Houston Tennessee
APSC
Hypericum perforatum
APSC0086738 Meade Kentucky
APSC
Hypericum perforatum
APSC0086741 Scott Kentucky 14 Jul 1955 Mary Wharton
APSC
Hypericum perforatum
APSC0086735 Oldham Kentucky
APSC
Hypericum perforatum
APSC0086737 Jefferson Kentucky
APSC
Hypericum perforatum
APSC0013039 Union Tennessee
APSC
Hypericum perforatum
APSC0016345 Trigg Kentucky
APSC
Hypericum perforatum
APSC0091795 Harlan Kentucky
APSC
Hypericum perforatum
APSC0086739 Trimble Kentucky
APSC
Hypericum perforatum
APSC0056213 Chester Tennessee
APSC
Hypericum perforatum
APSC0016349 Trigg Kentucky
APSC
Hypericum perforatum
APSC0086742 Woodford Kentucky
APSC
Hypericum perforatum
APSC0016338 Montgomery Tennessee
APSC
Hypericum perforatum
APSC0082896 Carter Kentucky
APSC
Hypericum perforatum
APSC0016336 Montgomery Tennessee
APSC
Hypericum perforatum
APSC0086740 Fayette Kentucky 06 Aug 1955 Mary Wharton
APSC
Hypericum perforatum
APSC0088274 Jefferson Kentucky 15 Jul 1986 Max Medley
APSC
Hypericum perforatum
APSC0016347 Trigg Kentucky
APSC
Hypericum perforatum
HTTU017297 Tennessee
HTTU
Hypericum perforatum
HTTU017306 White Tennessee
HTTU
Hypericum perforatum
HTTU021159 DeKalb Tennessee
HTTU
Hypericum perforatum
HTTU017298 White Tennessee
HTTU
Hypericum perforatum
HTTU017302 Kentucky
HTTU
Hypericum perforatum
HTTU017305 Marshall Kentucky
HTTU
Hypericum perforatum
HTTU017303 Logan Kentucky
HTTU
Hypericum perforatum
HTTU017300 DeKalb Tennessee
HTTU
Hypericum perforatum
HTTU021158 Ballard Kentucky
HTTU
Hypericum perforatum
APSC0016342 Todd Kentucky 01 Jul 1969 Lloyd Settle
APSC
Hypericum perforatum
APSC0016341 Todd Kentucky 03 Jun 1969 Lloyd Settle
APSC
Hypericum perforatum
APSC0086736 Oldham Kentucky
APSC
Hypericum perforatum
APSC0086743 Anderson Kentucky
APSC
Hypericum perforatum
HTTU017299 Muhlenberg Kentucky
HTTU
Hypericum perforatum
HTTU017304 Humphreys Tennessee
HTTU
Hypericum perforatum
HTTU017301 Muhlenberg Kentucky
HTTU
Hypericum perforatum
HTTU024435 Cumberland Tennessee
HTTU
Hypericum perforatum
MTSU012941 Davidson Tennessee 11 Jul 2001 Angela Cathey
247
MTSU
Hypericum perforatum
BRIT119665 Tennessee
VDB
Hypericum perforatum
BRIT119679 Tennessee
VDB
Hypericum perforatum
BRIT119683 Tennessee
VDB
Hypericum perforatum
BRIT119678 Tennessee
VDB
Hypericum perforatum
BRIT119677 Tennessee
VDB
Hypericum perforatum
BRIT119670 Tennessee
VDB
Hypericum perforatum
BRIT119671 Tennessee
VDB
Hypericum perforatum
BRIT119681 Tennessee
VDB
Hypericum perforatum
BRIT119680 Tennessee
VDB
Hypericum perforatum
BRIT119667 Tennessee
VDB
Hypericum perforatum
MTSU012951 Rutherford Tennessee 24 Jun 1980 Loni Neight
29
MTSU
Hypericum perforatum
UCHT033374 Bradley Tennessee
UCHT
Hypericum perforatum
UCHT033376 Tennessee
UCHT
Hypericum perforatum
BRIT119674 Tennessee
VDB
Hypericum perforatum
BRIT126333 Cannon Tennessee 22 Jul 1981 Landon E. McKinney
246
VDB
Hypericum perforatum
BRIT119684 Tennessee
VDB
Hypericum perforatum
BRIT119669 Tennessee
VDB
Hypericum perforatum
BRIT119672 Tennessee
VDB
Hypericum perforatum
BRIT119673 Tennessee
VDB
Hypericum perforatum
BRIT119668 Tennessee
VDB
Hypericum perforatum
BRIT119676 Tennessee
VDB
Hypericum perforatum
BRIT119682 Tennessee
VDB
Hypericum perforatum
BRIT119666 Tennessee
VDB
Hypericum perforatum
BRIT119675 Tennessee
VDB
Hypericum perforatum
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Plant Photos

Hypericum perforatum - Dwayne Estes
Hypericum perforatum - Dwayne Estes
Hypericum perforatum - Dwayne Estes
Hypericum perforatum - Dwayne Estes
Hypericum perforatum - Dwayne Estes
Hypericum perforatum - Dwayne Estes
Hypericum perforatum - Dwayne Estes
Hypericum perforatum - Dwayne Estes
Hypericum perforatum - Joey Shaw
Hypericum perforatum - Joey Shaw
Hypericum perforatum - Joey Shaw
Hypericum perforatum - Joey Shaw
Hypericum perforatum - Joey Shaw
Hypericum perforatum - Joey Shaw
Hypericum perforatum - Joey Shaw
Hypericum perforatum - Joey Shaw
Hypericum perforatum - Milo Pyne
Hypericum perforatum - Milo Pyne