| Answer | Crossword Clue |
|---|---|
| sundrops | A day-flowering North American plant with yellow flowers, related to the evening primrose |
| buckeye | A North American tree or shrub related to the horse chestnut, with showy yellow, red, or white flowers |
| oenothera | a type of S. American plant with yellow flowers that open in the evening |
| oenotheras | OENOTHERA, a type of S. American plant with yellow flowers that open in the evening |
| rudbeckias | A North American plant of the daisy family, with yellow or orange flowers and a dark conelike center |
| rudbeckia | A North American plant of the daisy family, with yellow or orange flowers and a dark conelike center |
