Summary[edit] Description: English: Centaurea solstitialis inflorescence close up, Campo de Calatrava, Spain. Date: 10 June 2008. Source: own work release. Author: javier martin. Permission(Reusing this file): Public domainPublic domainfalsefalse. : I, the copyright holder of this work, release this work into the public domain. This applies worldwide.In some countries this may not be legally possible; if so:I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law..
Summary[edit] Description: Català: Centaurea solstitialis a la Serra de Castelltallat, Bages 830 m snm. Date: 1 August 2015, 18:24:49. Source: Own work. Author: Victor M. Vicente Selvas.
Summary[edit] Description: English: Centaurea solstitialis Flower close up, Campo de Calatrava, Spain. Date: 10 June 2008. Source: Own work. Author: Javier martin. Permission (Reusing this file): Public domainPublic domainfalsefalse. : I, the copyright holder of this work, release this work into the public domain. This applies worldwide. In some countries this may not be legally possible; if so: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law. Public domainPublic domainfalsefalse.
Summary[edit] Description: English: Centaurea solstitialis on HWY 97 south of Goldendale, Klickitat County Washington. Date: 29 July 2012, 15:13:49. Source: Own work. Author: Thayne Tuason. Object location45° 43′ 09.62″ N, 120° 48′ 21.25″ WView all coordinates using: OpenStreetMap 45.719340; -120.805903.
Description: Introduced, warm-season, annual or short lived perennial, erect herb, to 75 cm tall; taproot is about 20 cm long with numerous laterals. Leaves and stems are spineless and have a covering of downy hairs, giving a greyish appearance. Heads are solitary; bracts have stout spines and the florets are yellow and all tubular. Flowering is in spring and summer. Occurs in exposed situations on fertile or drier soils, usually in neglected areas and roadsides with poor ground cover. Occasionally invades unimproved grazing land; grows best in areas of more than 600 mm rainfall, but can be troublesome in semi-arid rangelands. Thought to be allelopathic, restricting growth of competing species. Poisonous to horses. Strong, competitive well managed pastures are the long term solution. Slashing can be an effective control; best undertaken at early flowering and in dry conditions; repeat slashing may be needed. Intensive grazing in spring before spines form will reduce seed set. Seedlings and rosettes can be controlled through repeated shallow cultivations. Herbicides are most effective when rosettes are small. Date: 23 January 2014, 11:46. Source: Centaurea solstitialis flowerhead2. Author: Harry Rose from South West Rocks, Australia.
Summary[edit] Description: English: Plants of Centaurea solstitialis at Topurak-Bel Pass, 15.08.2013. Photo: A.Sennikov. Date: 22 January 2014, 23:45:37. Source: (2014). "New records in vascular plants alien to Kyrgyzstan". Biodiversity Data Journal 2: e1018. DOI:10.3897/BDJ.2.e1018. Author: Lazkov G, Sennikov A, Naumenko A.
Summary[edit] Description: St Barnabys Thistle, with branched stems, single yellow flower heads and spines about 15 mm long it is probably Centaurea solstitialis. Mudgee, NSW Australia, January 2009. Date: 7 January 2009, 11:07. Source: St Barnabys Thistle. Author: John Tann from Sydney, Australia. Camera location32° 36′ 07.98″ S, 149° 34′ 59.95″ EView all coordinates using: OpenStreetMap-32.602217; 149.583320.
Summary[edit] Description: Català: Blanquiella (Centaurea solstitialis). Presa als Empalous de Torà (Segarra -Catalunya). A 510 m. d'alçada English: Centaurea solstitialis. In Torà (Segarra-Catalunya). To 510 m. altitude. Date: 26 July 2011, 12:32:47. Source: Own work. Author: Isidre blanc. Camera location 41° 47′ 18.2″ N, 1° 22′ 56.92″ E: View all coordinates using: OpenStreetMap - Google Earth: 41.788390; 1.382477.
Summary[edit] Description: St Barnabys Thistle, with branched stems, single yellow flower heads and spines about 15 mm long it is probably Centaurea solstitialis. Mudgee, NSW Australia, January 2009. Date: 7 January 2009, 11:07. Source: St Barnabys Thistle. Author: John Tann from Sydney, Australia. Camera location32° 36′ 07.98″ S, 149° 34′ 59.95″ EView all coordinates using: OpenStreetMap-32.602217; 149.583320.
Summary[edit] Description: English: Centaurea solstitialis habitus, Campo de Calatrava, Spain. Date: 10 June 2008. Source: Own work. Author: Javier martin. Permission (Reusing this file): Public domainPublic domainfalsefalse. : I, the copyright holder of this work, release this work into the public domain. This applies worldwide. In some countries this may not be legally possible; if so: I grant anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law. Public domainPublic domainfalsefalse.
Summary[edit] Description: English: Habitat of Centaurea solstitialis at Topurak-Bel Pass. Date: Taken on 15 August 2013. Source: (2014). "New records in vascular plants alien to Kyrgyzstan". Biodiversity Data Journal 2: e1018. DOI:10.3897/BDJ.2.e1018. Author: A. Sennikov.
Description: Introduced, warm-season, annual or short lived perennial, erect herb, to 75 cm tall; taproot is about 20 cm long with numerous laterals. Leaves and stems are spineless and have a covering of downy hairs, giving a greyish appearance. Heads are solitary; bracts have stout spines and the florets are yellow and all tubular. Flowering is in spring and summer. Occurs in exposed situations on fertile or drier soils, usually in neglected areas and roadsides with poor ground cover. Occasionally invades unimproved grazing land; grows best in areas of more than 600 mm rainfall, but can be troublesome in semi-arid rangelands. Thought to be allelopathic, restricting growth of competing species. Poisonous to horses. Strong, competitive well managed pastures are the long term solution. Slashing can be an effective control; best undertaken at early flowering and in dry conditions; repeat slashing may be needed. Intensive grazing in spring before spines form will reduce seed set. Seedlings and rosettes can be controlled through repeated shallow cultivations. Herbicides are most effective when rosettes are small. Date: 23 January 2014, 11:42. Source: Centaurea solstitialis plant4. Author: Harry Rose from South West Rocks, Australia.
