Ambrosia bidentata

ClassificationDicots
FamilyAsteraceae
Family (Traditional)Asteraceae
GenusAmbrosia
Species:Ambrosia bidentata Michx.
Common NameLanceleaf Ragweed
Growth Habitforb
Plant Notes**
CharacteristicsArmaments: No; Milky Sap: No; Photosynthetic: Yes; Stipules: No; Woody Herbaceous: Herbaceous; Natural Area Presence: RCSP; Duration: Annual; General Ecology: Terrestrial; Growth Habit: forb; Moisture Requirements: Xeric; Moisture Requirements: Sub-xeric; Moisture Requirements: Dry-mesic; Region of Origin: North America; Reproductive Phenology: July; Reproductive Phenology: August; Reproductive Phenology: September; Reproductive Phenology: October; Leaf Arrangement: opposite; Leaf Complexity: simple; Leaf Dissection: 0; Leaf Dissection: 0.5; Leaf Fragrance: No; Leaf Persistance: Deciduous; Leaf Petiole Type: petiolate; Leaf Type: broadleaf; Leaf Venation: pinnate; Leaflet Margins: entire; Leaflet Margins: lobed; Leaflet Number: 0; Anther Type: Basifixed; Base Flower Color: White; Base Flower Color: Yellow; Carpel Number/Pistil: 1; Fruit Complexity: Simple; Fruit Dehiscence: No; Fruit Type: Cypsela; Fruit Wet/Dry: Dry; Hypanthium Present: No; Inflorescence Position: terminal; Inflorescence Types: head; Ovary Position: Inferior; Overall Flower Symmetry: Actinomorphic; Ovules per Carpel: 1; Perianth Present: Yes; Petal Fusion: Yes; Petal Number: 5; Pistil Complexity: Simple; Pistil Number: 1; Placentation Type: Basal; Sepal Fusion: N/A; Sepal Number: N/A; Sexuality: monoecious; Sporangium Arrangement: N/A; Stamen Number: 5; Tepal Number: N/A
C value 3
StatusNative; TN[SNR] 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

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), Bath (KY), Calloway (KY), Clinton (KY), Graves (KY), Grayson (KY), Hopkins (KY), Larue (KY), Lyon (KY), McCracken (KY), Madison (KY), Meade (KY), Owen (KY), Rockcastle (KY), Trigg (KY), Bedford (TN), Blount (TN), Bradley (TN), Carroll (TN), Coffee (TN), Davidson (TN), Giles (TN), Hamilton (TN), Hardeman (TN), Hardin (TN), Haywood (TN), Henry (TN), Knox (TN), Lawrence (TN), McNairy (TN), Meigs (TN), Montgomery (TN), Overton (TN), Putnam (TN), Rutherford (TN), Shelby (TN), Stewart (TN), Tipton (TN), Wilson (TN)

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

Range of years during which specimens were collected: 1907 - 2000

Accession No. (click for full details) County State Coll. Date Collector &
Collection No.
Herbarium &
Herbarium Name Used
31234100227543 Madison Kentucky 10 Sep 1995 Timothy J. Weckman
1977
EKY
Ambrosia bidentata
31234100227535 Clinton Kentucky 03 Aug 2000 Robert F. C. Naczi
8640
EKY
Ambrosia bidentata
31234100227568 Grayson Kentucky 09 Sep 1980 Richard H. Hannan
5392
EKY
Ambrosia bidentata
31234100227527 Calloway Kentucky 08 Sep 1982 Michael Woods
992
EKY
Ambrosia bidentata
BEREA002609 Rockcastle Kentucky
BEREA
Ambrosia bidentata
BEREA002611 Trigg Kentucky
BEREA
Ambrosia bidentata
MDKY00009628 Bath Kentucky
MDKY
Ambrosia bidentata
TENN-V-0227619 Henry Tennessee
TENN
Ambrosia bidentata
TENN-V-0227626 Putnam Tennessee
TENN
Ambrosia bidentata
TENN-V-0227634 Tipton Tennessee
TENN
Ambrosia bidentata
TENN-V-0227612 Giles Tennessee
TENN
Ambrosia bidentata
TENN-V-0227623 Meigs Tennessee
TENN
Ambrosia bidentata
TENN-V-0227633 Shelby Tennessee
TENN
Ambrosia bidentata
TENN-V-0227627 Shelby Tennessee
TENN
Ambrosia bidentata
TENN-V-0227609 Blount Tennessee
TENN
Ambrosia bidentata
31234100227600 Putnam Tennessee 21 Aug 1979 Thomas S. Patrick
1063
EKY
Ambrosia bidentata
31234100227592 Tennessee 21 May 1907 H. Garman
EKY
Ambrosia bidentata
BEREA002610 Rockcastle Kentucky
BEREA
Ambrosia bidentata
31973000005216 Owen Kentucky 18 Aug 1996 Wessel, Mark
KNK
Ambrosia bidentata
TENN-V-0227624 Shelby Tennessee
TENN
Ambrosia bidentata
TENN-V-0227618 Haywood Tennessee
TENN
Ambrosia bidentata
TENN-V-0241516 Coffee Tennessee
TENN
Ambrosia bidentata
TENN-V-0241184 Shelby Tennessee
TENN
Ambrosia bidentata
TENN-V-0227616 Hardin Tennessee
TENN
Ambrosia bidentata
TENN-V-0227620 Knox Tennessee
TENN
Ambrosia bidentata
TENN-V-0227608 Bedford Tennessee
TENN
Ambrosia bidentata
TENN-V-0227628 Shelby Tennessee
TENN
Ambrosia bidentata
TENN-V-0227615 Hardin Tennessee
TENN
Ambrosia bidentata
TENN-V-0227622 Meigs Tennessee
TENN
Ambrosia bidentata
TENN-V-0227629 Shelby Tennessee 24 Sep 1967 Elizabeth M. Browne & Edward T. Browne
T-68
TENN
Ambrosia bidentata
TENN-V-0227611 Coffee Tennessee
TENN
Ambrosia bidentata
TENN-V-0227632 Shelby Tennessee
TENN
Ambrosia bidentata
TENN-V-0227610 Carroll Tennessee
TENN
Ambrosia bidentata
TENN-V-0227621 McNairy Tennessee
TENN
Ambrosia bidentata
TENN-V-0227773 Coffee Tennessee
TENN
Ambrosia bidentata
TENN-V-0227613 Hardeman Tennessee
TENN
Ambrosia bidentata
TENN-V-0227635 Tipton Tennessee
TENN
Ambrosia bidentata
TENN-V-0227617 Haywood Tennessee
TENN
Ambrosia bidentata
TENN-V-0227614 Hardeman Tennessee
TENN
Ambrosia bidentata
APSC0074340 McCracken Kentucky
APSC
Ambrosia bidentata
APSC0115726 Graves Kentucky
APSC
Ambrosia bidentata
APSC0028280 Montgomery Tennessee 21 Aug 1979 Edward Chester
APSC
Ambrosia bidentata
APSC0102319 Meade Kentucky
APSC
Ambrosia bidentata
APSC0028274 Lyon Kentucky
APSC
Ambrosia bidentata
APSC0085660 Coffee Tennessee
APSC
Ambrosia bidentata
TENN-V-0227631 Shelby Tennessee
TENN
Ambrosia bidentata
TENN-V-0227625 Overton Tennessee
TENN
Ambrosia bidentata
TENN-V-0227636 Wilson Tennessee
TENN
Ambrosia bidentata
TENN-V-0227630 Shelby Tennessee
TENN
Ambrosia bidentata
APSC0028275 Stewart Tennessee 08 Sep 1966 Eugene Wofford
APSC
Ambrosia bidentata
APSC0028276 Stewart Tennessee 06 Aug 1973 Edward Chester
APSC
Ambrosia bidentata
APSC0028271 Trigg Kentucky
APSC
Ambrosia bidentata
APSC0028278 Montgomery Tennessee 28 Aug 1948 Alfred Clebsch
APSC
Ambrosia bidentata
APSC0073215 Larue Kentucky
APSC
Ambrosia bidentata
APSC0090095 Hopkins Kentucky
APSC
Ambrosia bidentata
APSC0028273 Trigg Kentucky
APSC
Ambrosia bidentata
HTTU026363 Putnam Tennessee
HTTU
Ambrosia bidentata
UCHT029001 Hamilton Tennessee
UCHT
Ambrosia bidentata
BRIT89443 Haywood Tennessee
VDB
Ambrosia bidentata
BRIT89442 Hardin Tennessee
VDB
Ambrosia bidentata
APSC0028277 Anderson Kentucky
APSC
Ambrosia bidentata
APSC0028272 Trigg Kentucky
APSC
Ambrosia bidentata
APSC0074339 Graves Kentucky
APSC
Ambrosia bidentata
APSC0111552 Hardin Tennessee
APSC
Ambrosia bidentata
HTTU002400 Tennessee
HTTU
Ambrosia bidentata
BRIT89408 Davidson Tennessee
VDB
Ambrosia bidentata
BRIT89441 Hardin Tennessee
VDB
Ambrosia bidentata
BRIT89407 Coffee Tennessee
VDB
Ambrosia bidentata
MEM001099 Shelby Tennessee 30 Jul 1962 J.G. Phillips
s.n.
MEM
Ambrosia bidentata
MEM001513 Shelby Tennessee 05 Jul 1966 Donna Chapel
96
MEM
Ambrosia bidentata
BRIT89444 Lawrence Tennessee
VDB
Ambrosia bidentata
BRIT89445 Rutherford Tennessee
VDB
Ambrosia bidentata
BRIT89406 Coffee Tennessee
VDB
Ambrosia bidentata
BRIT89405 Blount Tennessee
VDB
Ambrosia bidentata
BRIT89446 Tipton Tennessee
VDB
Ambrosia bidentata
MEM009013 Graves Kentucky 09 Jul 1973 Elizabeth M. Browne, Edward T. Browne Jr.
73E7.1
MEM
Ambrosia bidentata
MEM006298 McCracken Kentucky 27 Aug 1971 Raymond Athey
1474
MEM
Ambrosia bidentata
MEM001097 Shelby Tennessee 31 Jul 1961 Martha Powell
s.n.
MEM
Ambrosia bidentata
MEM001100 Shelby Tennessee 1965-6 Pam Boggs
s.n.
MEM
Ambrosia bidentata
MEM011018 Tipton Tennessee 24 Aug 1968 Sarah J. Warrington
341
MEM
Ambrosia bidentata
UCHT042297 Hamilton Tennessee
UCHT
Ambrosia bidentata
UCHT042298 Bradley Tennessee
UCHT
Ambrosia bidentata
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Plant Photos

Ambrosia bidentata - Joey Shaw
Ambrosia bidentata - Joey Shaw
Ambrosia bidentata - Joey Shaw
Ambrosia bidentata - Joey Shaw
Ambrosia bidentata - Joey Shaw
Ambrosia bidentata - Joey Shaw