Helianthus decapetalus

ClassificationDicots
FamilyAsteraceae
Family (Traditional)Asteraceae
GenusHelianthus
Species:Helianthus decapetalus L.
Common NameThinleaf Sunflower
Growth Habitforb
Plant Notes**
CharacteristicsArmaments: No; Milky Sap: No; Photosynthetic: Yes; Stipules: No; Woody Herbaceous: Herbaceous; Natural Area Presence: BFM; Natural Area Presence: FCFSP; Natural Area Presence: FG; Natural Area Presence: GILES; Natural Area Presence: GM; Natural Area Presence: GRSM; Natural Area Presence: LCW; Natural Area Presence: NRG; Natural Area Presence: SGSNA; Natural Area Presence: SM; Natural Area Presence: UCR; Natural Area Presence: WOLF; Duration: Perennial; General Ecology: Terrestrial; Growth Habit: forb; Moisture Requirements: Dry-mesic; Moisture Requirements: Mesic; Region of Origin: North America; Reproductive Phenology: July; Reproductive Phenology: August; Reproductive Phenology: September; Reproductive Phenology: October; Leaf Arrangement: alternate; Leaf Arrangement: opposite; Leaf Complexity: simple; Leaf Dissection: 0; Leaf Fragrance: No; Leaf Persistance: Deciduous; Leaf Petiole Type: petiolate; Leaf Type: broadleaf; Leaflet Margins: serrate; Leaflet Number: 0; Anther Type: Basifixed; 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; Inflorescence Types: solitary; Ovary Position: Inferior; Overall Flower Symmetry: Actinomorphic; Overall Flower Symmetry: Zygomorphic; 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: monoclinous; Sporangium Arrangement: N/A; Stamen Number: 5; Tepal Number: N/A
C value 6
StatusNative; AGCP (UPL), EMP (FACU) (NWPL); TN[SNR] KY[S5] (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.

Leaflet | Powered by Esri | Esri, HERE, Garmin, FAO, NOAA, USGS, EPA, NPS
  • 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 (1)

SynonymFull Citation
Helianthus decapetalis Helianthus decapetalis L.

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: Ballard (KY), Bell (KY), Carter (KY), Clark (KY), Clinton (KY), Harlan (KY), Jackson (KY), Jefferson (KY), Knox (KY), Letcher (KY), Lewis (KY), Lincoln (KY), Livingston (KY), McCracken (KY), McCreary (KY), Madison (KY), Marion (KY), Marshall (KY), Menifee (KY), Montgomery (KY), Perry (KY), Powell (KY), Rockcastle (KY), Whitley (KY), Woodford (KY), Carter (TN), Cocke (TN), Decatur (TN), Giles (TN), Greene (TN), Grundy (TN), Hamilton (TN), Hancock (TN), Hardin (TN), Hawkins (TN), Haywood (TN), Hickman (TN), Humphreys (TN), Jackson (TN), Knox (TN), Madison (TN), Marion (TN), Maury (TN), Perry (TN), Polk (TN), Putnam (TN), Roane (TN), Scott (TN), Sullivan (TN), Unicoi (TN), Union (TN), Van Buren (TN), Washington (TN), Wayne (TN), Weakley (TN)

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

Range of years during which specimens were collected: 1897 - 2015

Accession No. (click for full details)
County
State
Coll. Date
Collector &
Collection No.
Herbarium &
Herbarium Name Used
MEM012782 Ballard Kentucky 21 Sep 1977 Raymond Athey
3840
MEM
Helianthus decapetalus
APSC0116352 Bell Kentucky
APSC
Helianthus decapetalus
BEREA007599 Bell Kentucky
BEREA
Helianthus decapetalus
BEREA007598 Bell Kentucky
BEREA
Helianthus decapetalus
31234100239100 Carter Kentucky 29 Jul 1998 Ronald L. Jones
8539
EKY
Helianthus decapetalus
N/A Carter Tennessee 23 Aug 2014 Frosty Levy
ETSU
Helianthus decapetalus
ETSU005889 Carter Tennessee 09 Oct 2015 Frosty Levy
ETSU
Helianthus decapetalus
ETSU005890 Carter Tennessee 09 Oct 2015 Frosty Levy
ETSU
Helianthus decapetalus
ETSU008048 Carter Tennessee
ETSU
Helianthus decapetalus
TENN-V-0229969 Carter Tennessee
TENN
Helianthus decapetalus
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Plant Photos

Helianthus decapetalus - Dwayne Estes
Helianthus decapetalus - Dwayne Estes
Helianthus decapetalus - Dwayne Estes
Helianthus decapetalus - Dwayne Estes
Helianthus decapetalus - Dwayne Estes
Helianthus decapetalus - Dwayne Estes
Helianthus decapetalus - Dwayne Estes
Helianthus decapetalus - Dwayne Estes
Helianthus decapetalus - Dwayne Estes
Helianthus decapetalus - Dwayne Estes
Helianthus decapetalus - Dwayne Estes
Helianthus decapetalus - Dwayne Estes
Helianthus decapetalus - Dwayne Estes
Helianthus decapetalus - Dwayne Estes
Helianthus decapetalus - Dwayne Estes
Helianthus decapetalus - Dwayne Estes
Helianthus decapetalus - Dwayne Estes
Helianthus decapetalus - Dwayne Estes
Helianthus decapetalus - Dwayne Estes
Helianthus decapetalus - Dwayne Estes
Helianthus decapetalus - Dwayne Estes
Helianthus decapetalus - Dwayne Estes
Helianthus decapetalus - Tara Littlefield
Helianthus decapetalus - Tara Littlefield
Helianthus decapetalus - Tara Littlefield
Helianthus decapetalus - Tara Littlefield