| 0 | PI 686890 | Pseudocydonia - National Arboretum 5 O.P. | Pseudocydonia sinensis (Thouin) C. K. Schneid. | Oregon, United States | COR | | Not Available | 2016 | COLLECTED | 12/01/2016 | | | | | Breeding material | A population of seedlings was generated from seed collected by Kevin Conrad at the National Arboretum in Washington D.C. in 2010 from Pseudocydonia sinensis accession NA 29637. The seedlot and seedlings are NPGS accession PI 660759. About 8 seedling trees were established in the field collection at NCGR in 2011 from NCGR seed inventory CCYD 158. Seedling 5 (= CCYD 158.005) was the most precocious seedling, producing about a dozen large fruit (~650 g) in 2016. This accession (CCYD 181) constitutes open pollinated seed collected from CCYD 158.005. | 1943369 | PI 686890 |
| 1 | PI 686887 | Pseudocydonia Sheffield's | Pseudocydonia sinensis (Thouin) C. K. Schneid. | China | COR | | Not Available | 2015 | COLLECTED | 2013 | | | | | Uncertain improvement status | | 1925352 | PI 686887 |
| 2 | PI 660759 | Pseudocydonia National Arboretum | Pseudocydonia sinensis (Thouin) C. K. Schneid. | | COR | | Not Available | 2010 | | | | | | | Cultivated material | | 1854106 | PI 660759 |
| 3 | PI 655050 | 'Chinese' | Pseudocydonia sinensis (Thouin) C. K. Schneid. | California, United States | COR | | Not Available | 1996 | DEVELOPED | 1888 | | | | | Uncertain improvement status | | 1522046 | PI 655050 |
| 4 | PI 62405 | No. 1438 | Pseudocydonia sinensis (Thouin) C. K. Schneid. | Beijing Shi, China | | | Historic | 1925 | COLLECTED | 11/19/1924 | | | | | | | 1663615 | PI 62405 |
| 5 | PI 46129 | Mu kua | Pseudocydonia sinensis (Thouin) C. K. Schneid. | Hubei Sheng, China | | | Historic | 1918 | COLLECTED | 12/21/1917 | | | | | | | 1611163 | PI 46129 |
| 6 | PI 46130 | Mu li | Pseudocydonia sinensis (Thouin) C. K. Schneid. | Hubei Sheng, China | | | Historic | 1918 | COLLECTED | 12/31/1917 | | | | | | | 1611164 | PI 46130 |
| 7 | PI 38795 | No. 2065a | Pseudocydonia sinensis (Thouin) C. K. Schneid. | Shaanxi Sheng, China | | | Historic | 1914 | COLLECTED | 01/19/1914 | | | | | | | 1603719 | PI 38795 |
| 8 | PI 37954 | No. 1190 | Pseudocydonia sinensis (Thouin) C. K. Schneid. | Shandong Sheng, China | | | Historic | 1914 | COLLECTED | 03/11/1914 | | | | | | | 1602782 | PI 37954 |
| 9 | PI 22432 | Ta pai li | Pseudocydonia sinensis (Thouin) C. K. Schneid. | Hebei Sheng, China | | | Historic | 1908 | COLLECTED | 01/17/1908 | | | | | | | 1521724 | PI 22432 |
| 10 | PI 21001 | | Pseudocydonia sinensis (Thouin) C. K. Schneid. | Kanagawa, Japan | | | Historic | 1907 | COLLECTED | | | | | | | | 1533060 | PI 21001 |
| 11 | PI 20338 | No. 567a | Pseudocydonia sinensis (Thouin) C. K. Schneid. | Primorye, Russian Federation | | | Historic | 1907 | COLLECTED | 10/06/1906 | | | | | | | 1577381 | PI 20338 |
| 12 | PI 17726 | | Pseudocydonia sinensis (Thouin) C. K. Schneid. | China | | | Historic | 1906 | COLLECTED | | | | | | | | 1575156 | PI 17726 |
| 13 | PI 21253 | Ya kwam li | Pseudocydonia sinensis (Thouin) C. K. Schneid. | Beijing Shi, China | | | Historic | 1906 | COLLECTED | | | | | | | | 1533207 | PI 21253 |
| 14 | PI 21254 | | Pseudocydonia sinensis (Thouin) C. K. Schneid. | China | | | Historic | 1906 | COLLECTED | | | | | | | | 1533208 | PI 21254 |
| 15 | PI 17178 | No. 39 | Pseudocydonia sinensis (Thouin) C. K. Schneid. | Hubei Sheng, China | | | Historic | 1906 | COLLECTED | | Chang-li | | | | | | 1574711 | PI 17178 |
| 16 | PI 16911 | | Pseudocydonia sinensis (Thouin) C. K. Schneid. | Beijing Shi, China | | | Historic | 1905 | COLLECTED | | | | | | | | 1574396 | PI 16911 |
| 17 | PI 16916 | | Pseudocydonia sinensis (Thouin) C. K. Schneid. | Beijing Shi, China | | | Historic | 1905 | COLLECTED | | | | | | | | 1574400 | PI 16916 |
| 18 | PI 16924 | | Pseudocydonia sinensis (Thouin) C. K. Schneid. | Beijing Shi, China | | | Historic | 1905 | COLLECTED | | | | | | | | 1574408 | PI 16924 |
| 19 | PI 9239 | 'Waseaka' | Pseudocydonia sinensis (Thouin) C. K. Schneid. | Kanagawa, Japan | | | Historic | 1903 | COLLECTED | 08/1902 | | | | | | | 1548684 | PI 9239 |
| 20 | PI 9240 | 'Ofurugawa' | Pseudocydonia sinensis (Thouin) C. K. Schneid. | Kanagawa, Japan | | | Historic | 1903 | COLLECTED | 08/1902 | | | | | | | 1548685 | PI 9240 |
| 21 | PI 9241 | No. 1035 | Pseudocydonia sinensis (Thouin) C. K. Schneid. | Kanagawa, Japan | | | Historic | 1903 | COLLECTED | | | | | | | | 1734534 | PI 9241 |
| 22 | PI 9242 | 'Tai haka' | Pseudocydonia sinensis (Thouin) C. K. Schneid. | Kanagawa, Japan | | | Historic | 1903 | COLLECTED | 08/1902 | | | | | | | 1548686 | PI 9242 |
| 23 | PI 9243 | 'Chiojuro' | Pseudocydonia sinensis (Thouin) C. K. Schneid. | Kanagawa, Japan | | | Historic | 1903 | COLLECTED | 08/1902 | | | | | | | 1548693 | PI 9243 |
| 24 | PI 8209 | | Pseudocydonia sinensis (Thouin) C. K. Schneid. | Ionía Nísia, Greece | | | Historic | 1902 | COLLECTED | | | | | | | | 1547151 | PI 8209 |
| 25 | PI 6362 | | Pseudocydonia sinensis (Thouin) C. K. Schneid. | Ionía Nísia, Greece | | | Historic | 1901 | COLLECTED | | | | | | | | 1543656 | PI 6362 |
| 26 | PI 6183 | | Pseudocydonia sinensis (Thouin) C. K. Schneid. | Ionía Nísia, Greece | | | Historic | 1901 | COLLECTED | | | | | | | | 1543423 | PI 6183 |
| 27 | PI 6186 | | Pseudocydonia sinensis (Thouin) C. K. Schneid. | Ionía Nísia, Greece | | | Historic | 1901 | COLLECTED | | | | | | | | 1543426 | PI 6186 |
| 28 | PI 6188 | | Pseudocydonia sinensis (Thouin) C. K. Schneid. | Ionía Nísia, Greece | | | Historic | 1901 | COLLECTED | | | | | | | | 1543428 | PI 6188 |
| 29 | PI 5376 | | Pseudocydonia sinensis (Thouin) C. K. Schneid. | District of Columbia, United States | | | Historic | 1900 | COLLECTED | | | | | | | | 1541531 | PI 5376 |
| 30 | PI 2881 | | Pseudocydonia sinensis (Thouin) C. K. Schneid. | China | | | Historic | 1899 | COLLECTED | | | | | | | | 1550045 | PI 2881 |
| 31 | PI 2892 | | Pseudocydonia sinensis (Thouin) C. K. Schneid. | Japan | | | Historic | 1899 | COLLECTED | | | | | | | | 1537090 | PI 2892 |
| 32 | NA 83072 | NA 83072 | Pseudocydonia sinensis (Thouin) C. K. Schneid. | | NA | | Not Available | 2016 | | | | | | | Uncertain improvement status | Full name as recorded at U.S. National Arboretum: Pseudocydonia sinensis. Note from J. Postman at Corvallis to K. Conrad, USNA: "...I can offer you some seedlings of Pseudocydonia likely from a different source than those at the Nat. Arboretum. I bought seed from Sheffields Seeds last year that were of Chinese origin, and germination was nearly 100 [percent]. The leaf phenotype appears different than those from the seed you sent me a few years ago." | 2153215 | NA 83072 |
| 33 | NA 81483 | NA 81483 | Pseudocydonia sinensis (Thouin) C. K. Schneid. | | NA | | Not Available | 2013 | | | | | | | Cultivated material | Full name as recorded at U.S. National Arboretum: Pseudocydonia sinensis. Forest planting in Chinese container, 14 trees in all. Trees grown from seed by donor. | 2152561 | NA 81483 |
| 34 | NA 78659 | NA 78659 | Pseudocydonia sinensis (Thouin) C. K. Schneid. | | NA | | Not Available | 2002 | | | | | | | Cultivated material | Full name as recorded at U.S. National Arboretum: Pseudocydonia sinensis. Seedling from tree in GCA circle in Asian Collection (NA 29637-T), now removed due to fireblight susceptibility. | 2151421 | NA 78659 |
| 35 | CCHA 17 | | Pseudocydonia sinensis (Thouin) C. K. Schneid. | | | | Historic | 1987 | DONATED | 12/04/1987 | | | | | | | 1000653 | CCHA 17 |
| 36 | CCHA 15 | Uzbekistan 666 | Pseudocydonia sinensis (Thouin) C. K. Schneid. | Tashkent, Uzbekistan | NA | | Not Available | 1987 | DONATED | 04/24/1987 | | | | | | | 1000583 | CCHA 15 |
| 37 | CCHA 10 | Pseudocydonia - Tsuchiya City | Pseudocydonia sinensis (Thouin) C. K. Schneid. | Japan | NA | | Not Available | 1983 | DONATED | 04/08/1983 | | | | | | | 1000405 | CCHA 10 |
| 38 | CCHA 12 | | Pseudocydonia sinensis (Thouin) C. K. Schneid. | China | | | Historic | 1982 | DONATED | 12/13/1982 | | | | | | | 1000479 | CCHA 12 |
| 39 | NA 29637 | NA 29637 | Pseudocydonia sinensis (Thouin) C. K. Schneid. | | NA | | Not Available | 1967 | | | | | | | Uncertain improvement status | Full name as recorded at U.S. National Arboretum: Pseudocydonia sinensis. Unknown source (old National Arboretum plants). | 2144131 | NA 29637 |