| Onagraceae | |
Hauya arborea
| (Kellogg) Curran | Proc. Calif. Acad. Sci., ser. 2, 1: 253 | 1888 |
| Onagraceae | |
Hauya barcenae
| Hemsl. | Diagn. Pl. Nov. Mexic. 1: 13 | 1878 |
| Onagraceae | * |
Hauya californica
| S. Watson | Proc. Amer. Acad. Arts 20: 366 | 1885 |
| Onagraceae | |
Hauya cornuta
| Hemsl. | Diagn. Pl. Nov. Mexic. 1: 13 | 1878 |
| Onagraceae | |
Hauya donnellsmithii
| Loes. | Repert. Spec. Nov. Regni Veg. 12(322–324): 236 | 1913 |
| Onagraceae | |
Hauya elegans
| DC. | Prodr. 3: 36 | 1828 |
| Onagraceae | |
Hauya glauca
| Standl. & L.O. Williams | Ceiba 1(2): 89–90 | 1950 |
| Onagraceae | |
Hauya hemsleyana
| Loes. | Verh. Bot. Vereins Prov. Brandenburg 55(2): 176 | 1913 |
| Onagraceae | |
Hauya heydeana
| Donn. Sm. | Bot. Gaz. 18(1): 3 | 1893 |
| Onagraceae | |
Hauya lemnophila
| Donn. Sm. & Rose | Bot. Gaz. 52(1): 48 | 1911 |
| Onagraceae | |
Hauya longicornuta
| Loes. | Repert. Spec. Nov. Regni Veg. 12(322–324): 236 | 1913 |
| Onagraceae | |
Hauya lucida
| Donn. Sm. & Rose | Bot. Gaz. 52(1): 48 | 1911 |
| Onagraceae | |
Hauya lundellii
| Standl. | Publ. Field Mus. Nat. Hist., Bot. Ser. 17(2): 204 | 1937 |
| Onagraceae | |
Hauya matudae
| Lundell | Amer. Midl. Naturalist 19(2): 431 | 1938 |
| Onagraceae | |
Hauya microcerata
| Donn. Sm. & Rose | Bot. Gaz. 52(1): 46 | 1911 |
| Onagraceae | |
Hauya pedicellata
| Loes. | Verh. Bot. Vereins Prov. Brandenburg 55(2): 177 | 1913 |
| Onagraceae | |
Hauya purpusii
| Munz | Aliso 4(3): 496 | 1960 |
| Onagraceae | |
Hauya quercetorum
| Donn. Sm. & Rose | Bot. Gaz. 52(1): 47 | 1911 |
| Onagraceae | |
Hauya rodriguezii
| Donn. Sm. | Bot. Gaz. 18(1): 3 | 1893 |
| Onagraceae | |
Hauya ruacophila
| Donn. Sm. & Rose | Bot. Gaz. 52(1): 47 | 1911 |
| Onagraceae | |
Hauya rusbyi
| Donn. Sm. & Rose | Contr. U.S. Natl. Herb. 16(12): 291, f.48 | 1913 |
| Onagraceae | |
Hauya standleyi
| Munz | Aliso 4(3): 496–497 | 1960 |