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CCDB → Angiosperms → Onagraceae → Gayophytum
| Taxon name | Status | Median (n) |
| Gayophytum humile Juss. | Accepted | 7 |
| Gayophytum racemosum Torr. & A. Gray | Accepted | 7 |
| Gayophytum ramosissimum Torr. & A. Gray | Accepted | 7 |
| Gayophytum diffusum subsp. parviflorum Lewis | Synonym of Gayophytum diffusum subsp. parviflorum F. H. Lewis & Szweyk. | 14 |
| Gayophytum lasiospermum Greene | Synonym of Gayophytum diffusum subsp. parviflorum F. H. Lewis & Szweyk. | 14 |
| Gayophytum nuttallii var. abramsii Munz | Synonym of Gayophytum diffusum subsp. parviflorum F. H. Lewis & Szweyk. | 14 |
| Gayophytum nuttallii Torr. & A. Gray | Synonym of Gayophytum humile Juss. | 7 |
| Oenothera micrantha Hornem. ex Spreng. | Synonym of Gayophytum micranthum Hook. & Arn. | 7 |
| Gayophytum helleri var. glabrum Munz | Synonym of Gayophytum racemosum Torr. & A. Gray | 7 |
| Gayophytum ramosissimum None | Synonym of Gayophytum ramosissimum Torr. & A. Gray | 7 |