| 0 | PI 3881 | | Psoralea spp. | California, United States | | | Historic | 1538765 |
| 1 | PI 3882 | | Hoita macrostachya (DC.) Rydb. | California, United States | | | Historic | 1538767 |
| 2 | PI 3925 | | Atriplex lindleyi Moq. | California, United States | | | Historic | 1539009 |
| 3 | PI 3926 | | Atriplex lindleyi Moq. | California, United States | | | Historic | 1539017 |
| 4 | PI 3927 | | Sophora tetraptera J. F. Mill. | California, United States | | | Historic | 1539018 |
| 5 | PI 3928 | | Maytenus boaria Molina | California, United States | | | Historic | 1539019 |
| 6 | PI 3929 | | Beilschmiedia miersii (Gay) Kosterm. | California, United States | | | Historic | 1539020 |
| 7 | PI 3930 | 'Irvine's Hybrid Perennial Bean' | Phaseolus coccineus L. | California, United States | | | Historic | 1539021 |
| 8 | PI 3931 | | Tanacetum coccineum (Willd.) Grierson | California, United States | | | Historic | 1539022 |
| 9 | PI 3932 | | Tanacetum cinerariifolium (Trevir.) Sch. Bip. | California, United States | | | Historic | 1539023 |
| 10 | PI 3933 | | Linum usitatissimum L. | California, United States | | | Historic | 1539024 |
| 11 | PI 3934 | | Atriplex hortensis L. | California, United States | | | Historic | 1539025 |
| 12 | PI 3935 | | Lupinus angustifolius L. | California, United States | | | Historic | 1539026 |
| 13 | PI 3936 | | Iris ensata Thunb. | California, United States | | | Historic | 1539027 |
| 14 | PI 4018 | | Cercis occidentalis Torr. ex A. Gray | California, United States | | | Historic | 1539122 |
| 15 | PI 4019 | | Frangula californica (Eschsch.) A. Gray | California, United States | | | Historic | 1539123 |
| 16 | PI 4020 | | Rumex hymenosepalus Torr. | California, United States | | | Historic | 1539124 |
| 17 | PI 4022 | | Vitis californica Benth. | California, United States | | | Historic | 1539125 |
| 18 | PI 4081 | | Lagunaria patersonia (Andrews) G. Don | California, United States | | | Historic | 1539166 |
| 19 | PI 4082 | | Fraxinus velutina Torr. | California, United States | | | Historic | 1539167 |
| 20 | PI 4083 | | Prunus ilicifolia (Nutt. ex Hook. & Arn.) D. Dietr. | California, United States | | | Historic | 1539168 |
| 21 | PI 4084 | | Rhus spp. | California, United States | | | Historic | 1539169 |
| 22 | PI 4085 | | Hesperoyucca whipplei (Torr.) Trel. | California, United States | | | Historic | 1539170 |
| 23 | PI 4322 | | Citrullus lanatus (Thunb.) Matsum. & Nakai | California, United States | | | Historic | 1539554 |
| 24 | PI 5613 | | Atriplex leptocarpa F. Muell. | California, United States | | | Historic | 1542022 |
| 25 | PI 5614 | | Atriplex lindleyi Moq. | California, United States | | | Historic | 1542023 |
| 26 | PI 5615 | | Camphora officinarum Boerh. ex Fabr. | California, United States | | | Historic | 1542024 |
| 27 | PI 6196 | | Sequoia sempervirens (D. Don) Endl. | California, United States | | | Historic | 1543437 |
| 28 | PI 6351 | | Washingtonia filifera (Linden ex André) H. Wendl. | Unknown | | | Historic | 1543645 |
| 29 | PI 6352 | | Brahea edulis H. Wendl. ex S. Watson | Unknown | | | Historic | 1543646 |