Citruss · USDA pomological watercolour
Thompson Improved Citrus
Thompson Improved Citrus is a historic fruit cultivar documented by the U.S. Department of Agriculture between 1886 and 1942. 2 watercolour studies of it survive in the collection, with specimens recorded from California, Riverside, Riverside; California, Los Angeles, Duarte, painted by Newton, Amanda Almira, Passmore, Deborah Griscom. The paintings served as official botanical identification records before colour photography.
| Cultivar | Thompson Improved |
|---|---|
| Species | Citrus sinensis |
| Common fruit | Citrus |
| Painted | 1840–1860 |
| Artist(s) | Newton, Amanda Almira, Passmore, Deborah Griscom |
| Specimen origin | California, Riverside, Riverside; California, Los Angeles, Duarte |
| Collection | USDA Pomological Watercolor Collection |
| Plates | 2 |
All 2 plates
Public domain via the U.S. National Agricultural Library. Plate ids: POM00006485, POM00006486.
