| helianthus divaricatus | | USA: District of Columbia; U.S. National Arboretum 3501 New York Ave NE. Fern Valley section, footpath off of Crabtree Road NE. | | 1243023474 |
| helianthus divaricatus | | USA: District of Columbia; U.S. National Arboretum 3501 New York Ave NE. Fern Valley section, footpath off of Crabtree Road NE. | | 1243024110 |
| helianthus divaricatus | | USA: District of Columbia; U.S. National Arboretum 3501 New York Ave NE. Fern Valley section, footpath off of Crabtree Road NE. | | 1243025001 |
| helianthus divaricatus | | USA: District of Columbia; U.S. National Arboretum 3501 New York Ave NE. Fern Valley section, footpath off of Crabtree Road NE. | | 1243026401 |