| canada | british columbia | orobanche uniflora subsp. occidentalis | subspecies | 5 | 0 |
| canada | british columbia | orobanche uniflora subsp. uniflora | subspecies | 6 | 0 |
| canada | newfoundland and labrador | orobanche uniflora subsp. uniflora | subspecies | 4 | 0 |
| canada | quebec | orobanche uniflora subsp. uniflora | subspecies | 6 | 0 |
| united states | alaska | orobanche uniflora subsp. uniflora | subspecies | 9 | 0 |
| united states | california | orobanche uniflora | species | 1 | 0 |
| united states | california | orobanche uniflora subsp. occidentalis | subspecies | 37 | 0 |
| united states | colorado | orobanche uniflora subsp. occidentalis | subspecies | 5 | 0 |
| united states | michigan | orobanche uniflora subsp. uniflora | subspecies | 3 | 0 |
| united states | minnesota | orobanche uniflora subsp. uniflora | subspecies | 5 | 0 |
| united states | missouri | orobanche uniflora subsp. uniflora | subspecies | 4 | 0 |
| united states | montana | orobanche uniflora subsp. occidentalis | subspecies | 3 | 0 |
| united states | new york | orobanche uniflora subsp. uniflora | subspecies | 2 | 0 |
| united states | utah | orobanche uniflora subsp. occidentalis | subspecies | 2 | 0 |
| united states | virginia | orobanche uniflora subsp. uniflora | subspecies | 5 | 0 |
| united states | washington | orobanche uniflora subsp. occidentalis | subspecies | 10 | 0 |