Cyanus segetum

ClassificationDicots
FamilyAsteraceae
Family (Traditional)Asteraceae
GenusCyanus
Species:Cyanus segetum Hill
Common NameBachelors Button
Growth Habitforb
Plant Notes**
CharacteristicsArmaments: No; Milky Sap: No; Photosynthetic: Yes; Stipules: No; Woody Herbaceous: Herbaceous; Duration: Annual; General Ecology: Terrestrial; Growth Habit: forb; Region of Origin: Europe; Reproductive Phenology: May; Reproductive Phenology: June; Reproductive Phenology: July; Reproductive Phenology: August; Reproductive Phenology: September; Leaf Arrangement: alternate; Leaf Arrangement: basal; Leaf Complexity: simple; Leaf Dissection: 0; Leaf Fragrance: No; Leaf Persistance: Deciduous; Leaf Petiole Type: sessile; Leaf Type: broadleaf; Leaf Venation: pinnate; Leaflet Margins: entire; Leaflet Margins: lobed; Leaflet Number: 0; Anther Type: Basifixed; Base Flower Color: Blue; 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: corymb/cyme/umbel; 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: monoclinous; Sporangium Arrangement: N/A; Stamen Number: 5; Tepal Number: N/A
C value N/A
StatusNot Native
Specimen(s) View and Download Specimen Details »

** Not applicable or data not available.
Featured Plant Photo

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
Centaurea cyanus var. denudata Centaurea cyanus var. denudata
Centaurea pulcherrima Centaurea pulcherrima

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: Christian (KY), Fulton (KY), Jefferson (KY), Logan (KY), Metcalfe (KY), Montgomery (TN), Putnam (TN), Robertson (TN), Shelby (TN), Stewart (TN)

Herbaria represented by specimen data listed below: APSC, MEM

Range of years during which specimens were collected: 1970 - 1987

Accession No. (click for full details) County State Coll. Date Collector &
Collection No.		 Herbarium &
Herbarium Name Used
APSC0027206 Stewart Tennessee
APSC
Cyanus segetum
APSC0079419 Metcalfe Kentucky
APSC
Cyanus segetum
APSC0027208 Robertson Tennessee
APSC
Cyanus segetum
APSC0027207 Montgomery Tennessee
APSC
Cyanus segetum
APSC0027214 Montgomery Tennessee
APSC
Cyanus segetum
APSC0027216 Christian Kentucky 10 May 1970
APSC
Cyanus segetum
APSC0045894 Putnam Tennessee
APSC
Cyanus segetum
APSC0079418 Metcalfe Kentucky
APSC
Cyanus segetum
APSC0027213 Montgomery Tennessee
APSC
Cyanus segetum
APSC0121491 Jefferson Kentucky
APSC
Cyanus segetum
APSC0027205 Stewart Tennessee
APSC
Cyanus segetum
APSC0027215 Montgomery Tennessee
APSC
Cyanus segetum
APSC0079421 Logan Kentucky 10 May 1987 Max Medley
 APSC
Cyanus segetum
APSC0027210 Montgomery Tennessee
APSC
Cyanus segetum
APSC0100503 Montgomery Tennessee
APSC
Cyanus segetum
APSC0027211 Montgomery Tennessee
APSC
Cyanus segetum
APSC0121489 Jefferson Kentucky
APSC
Cyanus segetum
APSC0121490 Jefferson Kentucky
APSC
Cyanus segetum
MEM010576 Fulton Kentucky 09 May 1973 Elizabeth M. Browne, Edward T. Browne Jr.
73B21.1		 MEM
Cyanus segetum
MEM009806 Shelby Tennessee 15 Apr 1972 John E. Thompson Jr.
783		 MEM
Cyanus segetum
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Plant Photos

Cyanus segetum - Shawn Krosnick
Cyanus segetum - Shawn Krosnick