D I S C O V E R    L I F E   
Bee Hunt! Odonata Lepidoptera 
  HomeAll Living ThingsIDnature guidesGlobal mapperAlbumsLabelsSearch
  AboutNewsEventsResearchEducationProjectsStudy sitesHelp


Centaurea cyanus L.
CORNFLOWER
Garden cornflower

Life   Plantae   Dicotyledoneae   Asteraceae   Centaurea

Centaurea cyanus, whole plant - in flower - general view
© Copyright Steve Baskauf, 2002-2011 · 4
Centaurea cyanus, whole plant - in flower - general view

Click on map for details about points.

Links
80x5 - 240x3 - 240x4 - 320x1 - 320x2 - 320x3 - 640x1 - 640x2
Set display option above.
Click on images to enlarge.
Centaurea cyanus, inflorescence - whole - unspecified
© Copyright Steve Baskauf, 2002-2011 · 4
Centaurea cyanus, inflorescence - whole - unspecified
Centaurea cyanus, inflorescence - whole - unspecified
© Copyright Steve Baskauf, 2002-2011 · 4
Centaurea cyanus, inflorescence - whole - unspecified

Centaurea cyanus, stem - showing leaf bases
© Copyright Steve Baskauf, 2002-2011 · 4
Centaurea cyanus, stem - showing leaf bases
Centaurea cyanus, leaf - basal or on lower stem
© Copyright Steve Baskauf, 2002-2011 · 4
Centaurea cyanus, leaf - basal or on lower stem

Centaurea cyanus, leaf - on upper stem
© Copyright Steve Baskauf, 2002-2011 · 4
Centaurea cyanus, leaf - on upper stem
Centaurea cyanus
© Copyright Bobby Hattaway 2011 · 3
Centaurea cyanus

Centaurea cyanus, seed
© Copyright Seeds USID 2015 · 1
Centaurea cyanus, seed
Centaurea cyanus
© Copyright Malcolm Storey 2011-2115 · 1
Centaurea cyanus

Centaurea cyanus
© Copyright Malcolm Storey 2011-2115 · 1
Centaurea cyanus
Centaurea cyanus, flower
© Kay Yatskievych, 2003 · 1
Centaurea cyanus, flower

Associates · map
FamilyScientific name @ source (records)
Andrenidae  Perdita octomaculata @ CUIC_ENT (2)
Aphididae  Brachycaudus ( @ AMNH_PBI (1)

Prociphilus ( @ NCSU (1)
Apidae  Bombus ashtoni @ AMNH_BEE (1)

Bombus citrinus @ CUIC_ENT (3)

Bombus griseocollis @ I_HHGA (2)

Bombus pensylvanicus @ AMNH_BEE (1)

Bombus ternarius @ AMNH_BEE (1)

Bombus terricola @ AMNH_BEE (1)

Melissodes desponsa @ CUIC_ENT (1)

Triepeolus remigatus @ UCMS_ENT (5)
Coccinellidae  Hippodamia convergens @ I_LB (1)
Colletidae  Colletes kincaidii @ CUIC_ENT (1)
Halictidae  Agapostemon virescens @ CUIC_ENT (4)

Lasioglossum inconditum @ CUIC_ENT (1)

Lasioglossum zonulum @ CUIC_ENT (1)
Megachilidae  Coelioxys alternata @ CUIC_ENT (1)

Megachile centuncularis @ AMNH_BEE (1); CUIC_ENT (1); I_HHGA (1)

Megachile gemula @ CUIC_ENT (1)

Megachile latimanus @ CUIC_ENT (6)

Megachile relativa @ CUIC_ENT (3)

Pseudoanthidium nanum @ I_HHGA (6)
Membracidae  Entylia carinata @ NCSU (2)
Miridae  Orthocephalus bivittatus @ AMNH_PBI (3)

go to Discover Life's Facebook group

ERROR -- Need to remove recursive link: http://pick18.pick.uga.edu/mp/20p%3Fsee%3DI_USID186%26res%3D320 USID_Seeds

Following modified from MissouriPlants.com
   Top | See original


Centaurea cyanus L. - Cornflower, Bachelor's Buttons, Blue Bottle

Centaurea cyanus plant

Family - Asteraceae

Stems - To 1m tall, tomentose to arachnoid pubescent, herbaceous.

Centaurea cyanus stem Stem close-up.

Leaves - Alternate. Cauline leaves linear, entire, arachnoid pubescent, to +10cm long, +5mm wide.

Inflorescence - Single flower head terminating branches.

Involucre - Involucre to 1.5cm tall, imbricate, phyllaries with fimbriate margins.

Centaurea cyanus involucre Involucre.

Ray flowers - Absent.

Disc flowers - Corolla typically blue-purple but other colors in cultivated varieties, marginal flowers sterile. inner flowers smaller, fertile. Achenes to 4mm long. Pappus of capillary bristles.

Centaurea cyanus flowers Disk flowers.

Centaurea cyanus flowers Light pink form.

Flowering - May - September.

Habitat - Prairies, waste ground, roadsides, railroads. Also cultivated.

Origin - Native to Europe.

Other info. - This plant is heavily cultivated and escaped to a variety of locations. The disk flowers can be blue-purple, white, or pink. The plant is commonly used in dried flower arrangements.

Photographs taken at Schumaker Park, 6-16-99 and 7-12-00, and by Tom's Creek, NC., 4-20-03.


Back


Following modified from Plants Database, United States Department of Agriculture
   Top | See original

http://plants.usda.gov/java/profile?symbol=CECY2 ---> https://plants.usda.gov/java/profile?symbol=CECY2
https://plants.usda.gov/java/profile?symbol=CECY2 ---> http://plants.usda.gov/core/profile?symbol=CECY2
http://plants.usda.gov/core/profile?symbol=CECY2 ---> https://plants.usda.gov/core/profile?symbol=CECY2
Link: Skip repetitive navigation links
USDA and NRCS Identifier NRCS Logo
USDA.gov Web Site PLANTS photo banner
PLANTS Home  about PLANTS  PLANTS Team  Partners of PLANTS  What  National Plant Data Team Web Site  Help using PLANTS  Contact PLANTS
 
 Search the PLANTS Web site
 Name Search

 State Search
 Advanced Search
 Search Help
PLANTS Topics
 
 Alternative Crops
 Characteristics
 Classification
 Cover Crops
 Culturally Significant
 Distribution Update
 Documentation
 Fact Sheets & Plant Guides
 Introduced, Invasive, and Noxious Plants
 Threatened & Endangered
 Wetland Indicator Status
 
PLANTS Image Gallery
 
 50,000+ Plant Images
 
Download PLANTS data
 
 Complete PLANTS Checklist
 State PLANTS Checklist
 Advanced Search Download
 Symbols for Unknown Plants
 NRCS State GSAT Lists
 NRCS State Plants Lists
 
Related tools
 
 Crop Nutrient Tool
 Ecological Site Information System
 PLANTS Identification Keys
 Plant Materials Web Site
 Plant Materials Publications
 USDA Plant Hardiness Map
 
 
You are here: Home / Plant Profile

Centaurea cyanus L.
garden cornflower

Image of Centaurea cyanus

General Information
Symbol: CECY2
Group: Dicot
Family: Asteraceae
Duration: Annual
Growth Habit : Forb/herb
Native Status : CAN   I
GL   I
HI   I
L48   I
Data Source and Documentation
About our new maps
Plants-NRCS Logos
green round image for nativity Native blue round image for introduced Introduced ocre round image for introduced and nativity Both white round image for no status Absent/Unreported
image for native, but no county data Native, No County Data image for introduced, but no county data Introduced, No County Data both introduced and native, but no county data Both, No County Data
Native Status:
lower 48 status L48    Alaska status AK    Hawaii status HI    Puerto Rico status PR    Virgin Islands status VI    Navassa Island NAV    Canada status CAN    Greenland status GL    Saint Pierre and Michelon status SPM    North America NA   

Images

click on a thumbnail to view an image, or see all the Centaurea thumbnails at the Plants Gallery

Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. 3 vols. Charles Scribner's Sons, New York. Vol. 3: 557. Provided by Kentucky Native Plant Society . Scanned by Omnitek Inc . Usage Requirements .

slideshow

Synonyms

Symbol Scientific Name
LECY Leucacantha cyanus (L.) Nieuwl. & Lunell

Classification

Click on a scientific name below to expand it in the PLANTS Classification Report.
Rank Scientific Name and Common Name
Kingdom Plantae – Plants
Subkingdom Tracheobionta – Vascular plants
Superdivision Spermatophyta – Seed plants
Division Magnoliophyta – Flowering plants
Class Magnoliopsida – Dicotyledons
Subclass Asteridae
Order Asterales
Family Asteraceae ⁄ Compositae – Aster family
Genus Centaurea L. – knapweed
Species Centaurea cyanus L. – garden cornflower

Subordinate Taxa

This plant has no children

Legal Status

U.S. Weed Information
Centaurea cyanus bachelor's button cornflower garden cornflower This plant can be weedy or invasive according to the authoritative sources noted below.This plant may be known by one or more common names in different places, and some are listed above. Click on an acronym to view each weed list, or click here for a composite list of Weeds of the U.S.
SEEPPC Southeast Exotic Pest Plant Council. 1996. Invasive exotic pest plants in Tennessee (19 October 1999). Research Committee of the Tennessee Exotic Pest Plant Council. Tennessee.
SWSS Southern Weed Science Society. 1998. Weeds of the United States and Canada. CD-ROM . Southern Weed Science Society. Champaign, Illinois.
WSWS Whitson, T.D. (ed.) et al.. 1996. Weeds of the West . Western Society of Weed Science in cooperation with Cooperative Extension Services, University of Wyoming. Laramie, Wyoming.

Wetland Status

Interpreting Wetland Status

Top Level Regions
Hawaii FACU
North America
Alaska UPL
Arid West FACU
Atlantic and Gulf Coastal Plain FACU
Eastern Mountains and Piedmont FACU
Great Plains FACU
Midwest FACU
Northcentral & Northeast UPL
Western Mountains, Valleys, and Coast FACU

Related Links

More Accounts and Images
ARS Germplasm Resources Information Network (CECY2)
CalPhotos (CECY2)
Integrated Taxonomic Information System (CECY2)
Integrated Taxonomic Information System (LECY)
Jepson Interchange (University of California - Berkeley) (CECY2)
USF Atlas of Florida Vascular Plants (CECY2)
University of Tennessee Herbarium (Distribution) (CECY2)
University of Washington Burke Museum (CECY2)
University of Wisconsin - Stevens Point Freckmann Herbarium (CECY2)
Related Websites
Canada-Ontario Noxious Weeds (CECY2)
Michigan State University Extension Horticulture: abstract & image (CECY2)
Swedish Virtual Flora: images & text (in Swedish) (CECY2)

Wildlife

Food

Source Large Mammals Small Mammals Water Birds Terrestrial Birds

Cover

Source Large Mammals Small Mammals Water Birds Terrestrial Birds

Description of Values

Value Class Food Cover


 PLANTS Home | USDA.gov | NRCS | Site Map | Policies and Links
Accessibility Statement | Privacy Policy | Non-Discrimination Statement

Following modified from CalPhotos
   Top | See original


CalPhotos     Photo Database

 

Number of matches : 35
Query: SELECT * FROM img WHERE ready=1 and taxon like "Centaurea cyanus%" and (lifeform != "specimen_tag" OR lifeform != "Plant") ORDER BY taxon

Click on the thumbnail to see an enlargement

Centaurea cyanus
Centaurea cyanus
Cornflower
ID: 0177 3303 1982 0007 [detail]
© 2001 CDFA

Centaurea cyanus
Centaurea cyanus
Corn Flower
ID: 0000 0000 1002 0042 [detail]
© 2002 Molly Elizabeth Bagley

Centaurea cyanus
Centaurea cyanus
Corn Flower
ID: 0000 0000 1002 0043 [detail]
© 2002 Molly Elizabeth Bagley

Centaurea cyanus
Centaurea cyanus
ID: 0000 0000 0606 1250 [detail]
© 2006 George W. Hartwell

Centaurea cyanus
Centaurea cyanus
ID: 0000 0000 0606 1253 [detail]
© 2006 George W. Hartwell

Centaurea cyanus
Centaurea cyanus
ID: 0000 0000 0716 1363 [detail]
© 2016 John Doyen

Centaurea cyanus
Centaurea cyanus
Garden Cornflower
ID: 0000 0000 0808 1718 [detail]
© 2008 Zoya Akulova

Centaurea cyanus
Centaurea cyanus
Bachelor's Buttons
ID: 0000 0000 1008 0994 [detail]
© 2008 Zoya Akulova

Centaurea cyanus
Centaurea cyanus
Bachelor's Button
ID: 0000 0000 1208 0546 [detail]
© 2008 Keir Morse

Centaurea cyanus
Centaurea cyanus
Bachelor's Button
ID: 0000 0000 1208 0547 [detail]
© 2008 Keir Morse

Centaurea cyanus
Centaurea cyanus
ID: 0000 0000 0509 1662 [detail]
© 2009 Barry Rice

Centaurea cyanus
Centaurea cyanus
Bachelor's Button
ID: 0000 0000 1009 2862 [detail]
© 2009 Barry Breckling

Centaurea cyanus
Centaurea cyanus
Bachelor's Button
ID: 0000 0000 1009 2863 [detail]
© 2009 Barry Breckling

Centaurea cyanus
Centaurea cyanus
Bachelor's Button
ID: 0000 0000 1209 1381 [detail]
© 2009 Neal Kramer

Centaurea cyanus
Centaurea cyanus
Bachelor's Button
ID: 0000 0000 1209 1387 [detail]
© 2009 Neal Kramer

Centaurea cyanus
Centaurea cyanus
Bachelor's Button
ID: 0000 0000 1209 1390 [detail]
© 2009 Neal Kramer

Centaurea cyanus
Centaurea cyanus
Garden Cornflower
ID: 0000 0000 0610 0109 [detail]
© 2010 Aaron Arthur

Centaurea cyanus
Centaurea cyanus
Garden Cornflower
ID: 0000 0000 0610 0111 [detail]
© 2010 Aaron Arthur

Centaurea cyanus
Centaurea cyanus
Bachelor Buttons
ID: 0000 0000 0710 1710 [detail]
© 2010 Jean Pawek

Centaurea cyanus
Centaurea cyanus
ID: 0000 0000 0311 0800 [detail]
© 2011 Louis-M. Landry

Centaurea cyanus
Centaurea cyanus
ID: 0000 0000 0311 0801 [detail]
© 2011 Louis-M. Landry

Centaurea cyanus
Centaurea cyanus
ID: 0000 0000 0311 0802 [detail]
© 2011 Louis-M. Landry

Centaurea cyanus
Centaurea cyanus
ID: 0000 0000 0311 0803 [detail]
© 2011 Louis-M. Landry

Centaurea cyanus
Centaurea cyanus
ID: 0000 0000 0311 0804 [detail]
© 2011 Louis-M. Landry

Using these photos: A variety of organizations and individuals have contributed photographs to CalPhotos. Please follow the usage guidelines provided with each image. Use and copyright information, as well as other details about the photo such as the date and the location, are available by clicking on the [detail] link under the thumbnail. See also: Using the Photos in CalPhotos .   


Copyright © 1995-2016 UC Regents. All rights reserved.

CalPhotos is a project of BSCIT      University of California, Berkeley

Following modified from CalPhotos
   Top | See original


CalPhotos     Photo Database

 

Number of matches : 3
Query: SELECT * FROM img WHERE ready=1 and taxon like "Centaurea cyanus var. alba%" and (lifeform != "specimen_tag" OR lifeform != "Plant") ORDER BY taxon

Click on the thumbnail to see an enlargement

Centaurea cyanus var. alba
Centaurea cyanus var. alba
Cornflower
ID: 5205 1622 2824 0058 [detail]
© 1995 Saint Mary's College of California

Centaurea cyanus var. alba
Centaurea cyanus var. alba
Cornflower
ID: 0000 0000 0606 1251 [detail]
© 2006 George W. Hartwell

Centaurea cyanus var. alba
Centaurea cyanus var. alba
Cornflower
ID: 0000 0000 0606 1252 [detail]
© 2006 George W. Hartwell

Using these photos: A variety of organizations and individuals have contributed photographs to CalPhotos. Please follow the usage guidelines provided with each image. Use and copyright information, as well as other details about the photo such as the date and the location, are available by clicking on the [detail] link under the thumbnail. See also: Using the Photos in CalPhotos .   


Copyright © 1995-2016 UC Regents. All rights reserved.

CalPhotos is a project of BSCIT      University of California, Berkeley

Following modified from CalPhotos
   Top | See original


CalPhotos     Photo Database

 

Number of matches : 2
Query: SELECT * FROM img WHERE ready=1 and taxon like "Centaurea cyanus cv.%" and (lifeform != "specimen_tag" OR lifeform != "Plant") ORDER BY taxon

Click on the thumbnail to see an enlargement

Centaurea cyanus cv.
Centaurea cyanus cv.
Cornflower
ID: 0000 0000 0209 1475 [detail]
© 2009 Keir Morse

Centaurea cyanus cv.
Centaurea cyanus cv.
Cornflower
ID: 0000 0000 0209 1476 [detail]
© 2009 Keir Morse

Using these photos: A variety of organizations and individuals have contributed photographs to CalPhotos. Please follow the usage guidelines provided with each image. Use and copyright information, as well as other details about the photo such as the date and the location, are available by clicking on the [detail] link under the thumbnail. See also: Using the Photos in CalPhotos .   


Copyright © 1995-2016 UC Regents. All rights reserved.

CalPhotos is a project of BSCIT      University of California, Berkeley

Updated: 2017-05-27 06:14:52 gmt
Discover Life | Top
© Designed by The Polistes Corporation