| 0 | PI 420380 | | Centaurea sp. | Spain | | | Historic | 1977 | COLLECTED | | Monrepos Pass | | | | | | 1317504 | PI 420380 |
| 1 | PI 420381 | 47 | Centaurea sp. | Spain | | | Historic | 1977 | COLLECTED | 1975 | Fundetodos | | | | Uncertain improvement status | Purple 10 | 1317505 | PI 420381 |
| 2 | PI 399348 | 284 | Centaurea napulifera Rochel subsp. tuberosa (Vis.) Dostál | Bosnia and Herzegovina | | | Historic | 1975 | COLLECTED | | Mt. Sator, Bosnia and Herzegovina | 44.15390000, 16.67500000 | 900 | | Wild material | | 1300635 | PI 399348 |
| 3 | PI 326547 | Yu 45186 | Centaurea glaberrima Tausch | Former Serbia and Montenegro | W6 | | Not Available | 1968 | COLLECTED | | | | | | Uncertain improvement status | Annual or perennial herb, thistlelike. Summer. 10 | 1242144 | PI 326547 |
| 4 | PI 323273 | 'Camel Thorn' | Centaurea sp. | North-West Frontier, Pakistan | | | Historic | 1967 | COLLECTED | | Dry, eroded wasteland near Peshawar | | | | | | 1714217 | PI 323273 |
| 5 | PI 311739 | Ames 1051 | Centaurea benedicta (L.) L. | Poland | NC7 | | | 1966 | DONATED | 02/16/1966 | | | | | | | 1232736 | PI 311739 |
| 6 | PI 307930 | Col. No. 964 | Centaurea collina L. | Valenciana, Comunidad, Spain | | | Historic | 1965 | COLLECTED | | 12.8km west of Alcoy | | | | | | 1704048 | PI 307930 |
| 7 | PI 307931 | Col. No. 966 | Centaurea collina L. | Barcelona, Spain | | | Historic | 1965 | COLLECTED | | Along road from Barcelona to Montpellier, France, 48km from Spanish side | | | | | | 1704049 | PI 307931 |
| 8 | PI 307932 | Col. No. 967 | Centaurea collina L. | Barcelona, Spain | | | Historic | 1965 | COLLECTED | | Along road from Barcelona to Montpellier, France, 48km from Spanish border | | | | | | 1704050 | PI 307932 |
| 9 | PI 307933 | Col. No. 959 | Centaurea cyanus L. | Valenciana, Comunidad, Spain | | | Historic | 1965 | COLLECTED | | 21km west of Alcoy | | | | | | 1704051 | PI 307933 |
| 10 | PI 307969 | Col. No. 897 | Centaurea sp. | Algeria | | | Historic | 1965 | COLLECTED | 05/1965 | 62km weste of Setif | | | | | | 1704074 | PI 307969 |
| 11 | PI 307970 | Col. No. 914 | Centaurea sp. | Algeria | | | Historic | 1965 | COLLECTED | 05/1965 | 9.6km west of El Ancor | | | | | | 1704075 | PI 307970 |
| 12 | PI 307971 | Col. No. 915 | Centaurea sp. | Algeria | | | Historic | 1965 | COLLECTED | 05/1965 | 9.6km southwest of El Ancor | | | | | | 1704076 | PI 307971 |
| 13 | PI 307982 | Col. No. 924 | Centaurea sp. | Morocco | | | Historic | 1965 | COLLECTED | 05/1965 | 25.6km east of Fes | | | | | | 1704087 | PI 307982 |
| 14 | PI 307983 | Col. No. 925 | Centaurea sp. | Morocco | | | Historic | 1965 | COLLECTED | 05/1965 | 24km east of Fes | | | | | | 1704088 | PI 307983 |
| 15 | PI 307993 | Col. No. 894 | Centaurea solstitialis L. | Tunisia | | | Historic | 1965 | COLLECTED | 05/1965 | 29km west of Souk El Arba | | | | | | 1704096 | PI 307993 |
| 16 | PI 307994 | Col. No. 886 | Centaurea sp. | Tunisia | | | Historic | 1965 | COLLECTED | 05/1965 | 40km south of Sousse | | | | | | 1704113 | PI 307994 |
| 17 | PI 307995 | Col. No. 887 | Centaurea sp. | Tunisia | | | Historic | 1965 | COLLECTED | 05/1965 | 8km southwest of Korbous | | | | | | 1704114 | PI 307995 |
| 18 | PI 307996 | Col. No. 893 | Centaurea sp. | Tunisia | | | Historic | 1965 | COLLECTED | 05/1965 | 27km west of Souk El Arba on roadside | | | | | | 1704115 | PI 307996 |
| 19 | PI 307183 | Col. No. 864 | Centaurea sp. | Al Iskandarīyah, Egypt | | | Historic | 1965 | COLLECTED | | Collected 40km west of Alexandria | | | | | | 1702697 | PI 307183 |
| 20 | PI 255639 | | Centaurea sp. | Maryland, United States | | | Historic | 1959 | DONATED | 02/27/1959 | | | | | | | 1558267 | PI 255639 |
| 21 | PI 253770 | | Centaurea sp. | Iraq | W6 | | | 1958 | COLLECTED | | 5 km. south of Zuhura Junction, Baghdad | | | | Wild material | | 1195043 | PI 253770 |
| 22 | PI 251204 | | Centaurea benedicta (L.) L. | California, United States | NC7 | | | 1958 | DONATED | 09/17/1958 | | | | | | | 1194087 | PI 251204 |
| 23 | PI 198732 | 'Peace Flower' | Centaurea sp. | Japan | | | Historic | 1951 | COLLECTED | | | | | | | | 1676383 | PI 198732 |
| 24 | PI 156757 | | Centaurea cyanus L. | Japan | | | Historic | 1946 | COLLECTED | | | | | | | | 1895149 | PI 156757 |
| 25 | PI 149074 | | Centaurea cyanus L. | Pennsylvania, United States | | | Historic | 1944 | COLLECTED | | | | | | | | 1883641 | PI 149074 |
| 26 | PI 144432 | No. 39.1722 | Centaurea atacamensis (Reiche) I. M. Johnst. | Antofagasta, Chile | | | Historic | 1942 | COLLECTED | | Department of Taltal | | | 500m to 600m altitude | | | 1873948 | PI 144432 |
| 27 | PI 144433 | No. 39.1246 | Centaurea sp. | Atacama, Chile | | | Historic | 1942 | COLLECTED | | Department of Copiapo | | 150 | | | | 1873949 | PI 144433 |
| 28 | PI 141001 | No. 6130 | Centaurea sp. | Lorestān, Iran | | | Historic | 1941 | COLLECTED | 05/22/1940 | Durud | | | | | | 1865623 | PI 141001 |
| 29 | PI 141002 | No. 6306 | Centaurea sp. | Māzandarān, Iran | | | Historic | 1941 | COLLECTED | 07/12/1940 | | | | | | | 1865624 | PI 141002 |
| 30 | PI 137484 | No. 4572 | Centaurea sp. | Afghanistan | | | Historic | 1940 | COLLECTED | 08/31/1939 | Shanbashak Pass | | | | | | 1856805 | PI 137484 |
| 31 | PI 126268 | No. 3012 | Centaurea depressa M. Bieb. | Paktiyā, Afghanistan | | | Historic | 1937 | COLLECTED | 05/20/1937 | Gardez | | 2709 | | | | 1841791 | PI 126268 |
| 32 | PI 126269 | No. 3124 | Centaurea sp. | Afghanistan | | | Historic | 1937 | COLLECTED | 07/10/1937 | Gandocheshma | | 1806 | | | | 1841792 | PI 126269 |
| 33 | PI 126270 | No. 3122 | Centaurea sp. | Afghanistan | | | Historic | 1937 | COLLECTED | 07/10/1937 | Gandocheshma | | 1806 | | | | 1841793 | PI 126270 |
| 34 | PI 126271 | No. 3258 | Centaurea sp. | Badakhshān, Afghanistan | | | Historic | 1937 | COLLECTED | | Jurm | | 2107 | | | | 1841794 | PI 126271 |
| 35 | PI 126272 | No. 3300 | Centaurea sp. | Badakhshān, Afghanistan | | | Historic | 1937 | COLLECTED | 08/11/1937 | Daraim | | 2107 | | | | 1841795 | PI 126272 |
| 36 | PI 142454 | 'Violet-Red cornflower' | Centaurea jacea L. | Unknown | | | Historic | 1937 | COLLECTED | | Europe | | | | | | 1867753 | PI 142454 |
| 37 | PI 122823 | No. 1241 | Centaurea sp. | Gilgit-Baltistan, Pakistan | | | Historic | 1937 | COLLECTED | 08/18/1936 | Safaranga, Baltistan | | 1957 | | | | 1834455 | PI 122823 |
| 38 | PI 123029 | No. 1403 | Centaurea sp. | Gaziantep, Turkey | | | Historic | 1937 | COLLECTED | 07/02/1936 | 20km north of Gaziantep | | | | | | 1834651 | PI 123029 |
| 39 | PI 123030 | No. 1490 | Centaurea sp. | Gaziantep, Turkey | | | Historic | 1937 | COLLECTED | 07/03/1936 | 42km north of Gaziantep | | | | | | 1834652 | PI 123030 |
| 40 | PI 122250 | No. 3313 | Centaurea sp. | Ankara, Turkey | | | Historic | 1937 | COLLECTED | 05/13/1936 | Kechioren, Ankara | | | | | | 1833212 | PI 122250 |
| 41 | PI 122251 | No. 770 | Centaurea sp. | Denizli, Turkey | | | Historic | 1937 | COLLECTED | 05/31/1936 | Near Denizli | | | | | | 1833213 | PI 122251 |
| 42 | PI 118827 | | Centaurea sp. | Durango, Mexico | | | Historic | 1936 | COLLECTED | | Arroya Rosilla | | | | | | 1828416 | PI 118827 |
| 43 | PI 117441 | Gundung ghul | Centaurea sp. | Kābul, Afghanistan | | | Historic | 1936 | COLLECTED | 05/17/1936 | | | 180 | | | | 1826765 | PI 117441 |
| 44 | PI 75871 | No. 517 | Centaurea sp. | Tanzania | | | Historic | 1928 | COLLECTED | 09/27/1927 | Near Camp Kifuru | | | | | | 1730536 | PI 75871 |
| 45 | PI 54331 | | Centaurea ragusina L. | Provence-Alpes-Côte-d’Azur, France | | | Historic | 1921 | COLLECTED | | | | | | | | 1501847 | PI 54331 |
| 46 | PI 53910 | | Centaurea ragusina L. | Provence-Alpes-Côte-d’Azur, France | | | Historic | 1921 | COLLECTED | | | | | | | | 1505871 | PI 53910 |
| 47 | PI 53911 | | Centaurea ragusina L. | Provence-Alpes-Côte-d’Azur, France | | | Historic | 1921 | COLLECTED | | | | | | | | 1500668 | PI 53911 |
| 48 | PI 48027 | | Centaurea ragusina L. | Provence-Alpes-Côte-d’Azur, France | | | Historic | 1919 | COLLECTED | | | | | | | | 1613616 | PI 48027 |
| 49 | PI 22348 | No. 832a | Centaurea sp. | Hebei Sheng, China | | | Historic | 1908 | COLLECTED | 05/27/1907 | | | | | | | 1584149 | PI 22348 |
| 50 | PI 19847 | | Centaurea jacea L. | District of Columbia, United States | | | Historic | 1907 | COLLECTED | | | | | | | | 1532699 | PI 19847 |
| 51 | PI 12977 | | Centaurea cyanus L. | Pennsylvania, United States | | | Historic | 1905 | COLLECTED | | | | | | | | 1735328 | PI 12977 |
| 52 | PI 11114 | | Centaurea sp. | Ethiopia | | | Historic | 1904 | COLLECTED | | | | | | | | 1554056 | PI 11114 |
| 53 | PI 10679 | | Centaurea calcitrapa L. | Canarias, Spain | | | Historic | 1904 | COLLECTED | | | | | | | | 1553700 | PI 10679 |
| 54 | PI 4632 | 'Centennial Chameleon' | Centaurea sp. | Italy | | | Historic | 1900 | COLLECTED | | | | | | | | 1540158 | PI 4632 |
| 55 | PI 1465 | 'Chevalon' | Centaurea jacea L. | France | | | Historic | 1898 | COLLECTED | | | | | | | | 1533804 | PI 1465 |
| 56 | PI 902 | NEH1897 | Centaurea sp. | Russian Federation | | | Historic | 1898 | COLLECTED | | | | | | Uncertain improvement status | | 1482048 | PI 902 |
| 57 | W6 1160 grin | | Centaurea benedicta (L.) L. | | | | Historic | 2014 | | | | | | | | An accession only used for order items that do not have accessions linked to them. | 1916551 | W6 1160 grin |
| 58 | OPGC 3162 | GE-2005-56 | Centaurea macrocephala Muss. Puschk. ex Willd. | South Ossetia, Georgia | OPGC | | Not Available | 2006 | COLLECTED | 09/21/2005 | Tsikisjvari, Mt Kodiana, Borjomi District, Kartli Province | 41.72972200, 43.36722200 | 2253 | | Wild material | | 1907928 | OPGC 3162 |
| 59 | W6 27737 | GE-2005-31 | Centaurea sp. | Georgia | W6 | | Not Available | 2006 | COLLECTED | 08/15/2005 | Mt. Tetrobi, Akhalkalaki district in Javakheti province. | 41.60583333, 43.38527778 | 2415 | | Wild material | | 1692083 | W6 27737 |
| 60 | Ames 19336 | 900523 | Centaurea benedicta (L.) L. | Portugal | NC7 | | | 1992 | COLLECTED | | Freixo de Espada a Cinta, Tras-os-Montes Province. | | | | Wild material | | 1082794 | Ames 19336 |
| 61 | W6 9403 | TU85-034-04 | Centaurea sp. | Van, Turkey | | | Historic | 1986 | COLLECTED | 07/22/1985 | Low ground along Lake Van. Irrigated field, 2km NE of Yayliyaka, Van Province. | 38.83333333, 43.40000000 | 1625 | | Wild material | Weed in wheat field and at field edges. Rays blue. Disk flowers maroon | 1048431 | W6 9403 |
| 62 | W6 7111 | BLACK BOY | Centaurea cyanus L. | California, United States | W6 |  | | 1962 | DONATED | 1962 | | | | | Cultivar | | 1071633 | W6 7111 |
| 63 | NSL 15443 | BLUE BOY | Centaurea cyanus L. | California, United States | NLGRP | | Not Available | 1962 | DONATED | 1962 | | | | | | | 1071641 | NSL 15443 |
| 64 | NSL 15444 | PINKIE | Centaurea cyanus L. | California, United States | NLGRP | | Not Available | 1962 | DONATED | 1962 | | | | | | | 1071644 | NSL 15444 |
| 65 | NSL 15445 | RED BOY | Centaurea cyanus L. | California, United States | NLGRP | | Not Available | 1962 | DONATED | 1962 | | | | | | | 1071651 | NSL 15445 |
| 66 | NSL 15446 | SNOW MAN | Centaurea cyanus L. | California, United States | NLGRP | | Not Available | 1962 | DONATED | 1962 | | | | | | | 1071654 | NSL 15446 |
| 67 | NSL 15447 | DWARF POLKA DOT | Centaurea cyanus L. | California, United States | NLGRP | | Not Available | 1962 | DONATED | 1962 | | | | | | | 1071662 | NSL 15447 |