| argentina | | distichlis spicata | species | 3 | 0 |
| canada | british columbia | distichlis spicata | species | 4 | 0 |
| canada | british columbia | distichlis spicata subsp. stricta | subspecies | 4 | 0 |
| canada | saskatchewan | distichlis spicata subsp. stricta | subspecies | 2 | 0 |
| mexico | | distichlis spicata | species | 4 | 0 |
| united states | | distichlis spicata | species | 7 | 0 |
| united states | | distichlis spicata subsp. stricta | subspecies | 2 | 0 |