Summary ⁹

Centaurea scabiosa or Greater Knapweed is a perennial plant of the genus Centaurea. It is native to Europe and bears purple flower heads.

Summary ¹⁰

Centaurea scabiosa or Greater Knapweed is a perennial plant of the genus Centaurea. It is native to Europe and bears purple flower heads.

Associations ¹¹

Foodplant / internal feeder
larva of Acanthiophilus helianthi feeds within capitulum of Centaurea scabiosa

In Great Britain and/or Ireland:
Foodplant / parasite
mostly hypophyllous sorus of Albugo tragopogonis var. tragopogonis parasitises live leaf of Centaurea scabiosa
Remarks: season: 6-9

Foodplant / parasite
sporangium of Bremia lactucae parasitises live Centaurea scabiosa
Other: unusual host/prey

Foodplant / internal feeder
larva of Chaetorellia loricata feeds within capitulum of Centaurea scabiosa
Other: sole host/prey

Foodplant / internal feeder
larva of Chaetostomella cylindrica feeds within capitulum of Centaurea scabiosa

Foodplant / parasite
Golovinomyces cichoracearum parasitises live Centaurea scabiosa

Plant / resting place / within
puparium of Melanagromyza dettmeri may be found in stem of Centaurea scabiosa

Foodplant / saprobe
immersed pseudothecium of Nodulosphaeria centaureae is saprobic on dead stem of Centaurea scabiosa

Foodplant / parasite
underground tuber of Orobanche elatior parasitises root of Centaurea scabiosa
Other: major host/prey

Foodplant / feeds on
Orthocephalus coriaceus feeds on Centaurea scabiosa

Plant / resting place / within
loose puparium of Phytomyza cinerea may be found in leaf-mine of Centaurea scabiosa
Other: sole host/prey

Foodplant / saprobe
erumpent apothecium of Pirottaea brevipila is saprobic on dead stem of Centaurea scabiosa
Remarks: season: 6

Foodplant / parasite
pycnium of Puccinia calcitrapae parasitises live Centaurea scabiosa
Other: minor host/prey

Foodplant / spot causer
usually hypophyllous colony of Ramularia anamorph of Ramularia triboutiana causes spots on live leaf of Centaurea scabiosa

Foodplant / saprobe
gregarious, black pycnidium of Rhabdospora coelomycetous anamorph of Rhabdospora coriacea is saprobic on dead, silvery-grey-spotted stem of Centaurea scabiosa

Foodplant / internal feeder
larva of Terellia ceratocera feeds within capitulum of Centaurea scabiosa
Other: sole host/prey

Foodplant / internal feeder
larva of Terellia colon feeds within capitulum of Centaurea scabiosa
Other: sole host/prey

Foodplant / internal feeder
larva of Terellia plagiata feeds within stem of Centaurea scabiosa
Other: sole host/prey

Foodplant / internal feeder
larva of Trupanea stellata feeds within capitulum of Centaurea scabiosa
Remarks: Other: uncertain

Foodplant / gall
larva of Urophora cuspidata causes gall of capitulum of Centaurea scabiosa
Other: sole host/prey

Foodplant / gall
larva of Urophora quadrifasciata causes gall of capitulum of Centaurea scabiosa

Sources and Credits

1. (c) José María Escolano, some rights reserved (CC BY-NC-SA), https://www.flickr.com/photos/valdelobos/7388073726/
2. (c) José María Escolano, some rights reserved (CC BY-NC-SA), https://www.flickr.com/photos/valdelobos/6331879639/
3. (c) Kristian Peters, some rights reserved (CC BY-NC-SA), http://www.flickr.com/photos/26213090@N05/2478004377
4. (c) Biodiversity Heritage Library, some rights reserved (CC BY), https://www.flickr.com/photos/biodivlibrary/6028709465/
5. (c) José María Escolano, some rights reserved (CC BY-NC-SA), https://www.flickr.com/photos/valdelobos/7388076678/
6. (c) degeerelle, some rights reserved (CC BY-NC-ND), https://www.flickr.com/photos/ekebo/3801691974/
7. (c) Thistle-Garden, some rights reserved (CC BY-NC), https://www.flickr.com/photos/63026284@N05/14527332893/
8. (c) Thistle-Garden, some rights reserved (CC BY-NC), https://www.flickr.com/photos/63026284@N05/9570759447/
9. Adapted by Bea Steinemann from a work by (c) Wikipedia, some rights reserved (CC BY-SA), http://en.wikipedia.org/wiki/Centaurea_scabiosa
10. (c) Wikipedia, some rights reserved (CC BY-SA), http://en.wikipedia.org/wiki/Centaurea_scabiosa
11. (c) BioImages, some rights reserved (CC BY-NC-SA), http://eol.org/data_objects/22909053

More Info

• iNat taxon page
• Biodiversity Heritage Library
• BOLD Systems BIN search
• eFloras.org
• Flora of North America (beta)
• Global Biodiversity Information Facility (GBIF)
• HOSTS - a Database of the World's Lepidopteran Hostplants
• IPNI (with links to POWO, WFO, and BHL)
• NatureServe Explorer 2.0
• NBN Atlas
• SEINet Symbiota portals
• Tropicos
• USDA PLANTS database
• VASCAN by Canadensys
• World Flora Online

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