| Arecaceae | ** |
Roystonea aitia
| O.F. Cook | Natl. Hort. Mag. 18: 106 | 1939 |
| Arecaceae | |
Roystonea altissima
| (Mill.) H.E. Moore | Gentes Herbarum 9: 237 | 1963 |
| Arecaceae | |
Roystonea borinquena
| O.F. Cook | Bull. Torrey Bot. Club 28: 552 | 1901 |
| Arecaceae | * |
Roystonea caribaea
| (Spreng.) P. Wilson | Bull. New York Bot. Gard. 8: 385 | 1917 |
| Arecaceae | |
Roystonea dunlapiana
| P.H. Allen | Ceiba 3(1): 15, f. 1–3 | 1952-1953 [1952] |
| Arecaceae | * |
Roystonea elata
| (W. Bartram) F. Harper | Proc. Biol. Soc. Washington 59: 29 | 1946 |
| Arecaceae | |
Roystonea floridana
| O.F. Cook | Bull. Torrey Bot. Club 28: 554 | 1901 |
| Arecaceae | |
Roystonea hispaniolana
| L.H. Bailey | Gentes Herbarum 4: 268 | 1939 |
| Arecaceae | |
Roystonea jamaicana
| L.H. Bailey | Gentes Herbarum 3(7): 384, f. 219 right, 220a, 222–225 | 1935 |
| Arecaceae | |
Roystonea jenmanii
| (C.H. Wright) Burret | Bot. Jahrb. Syst. 63: 76 | 1929 |
| Arecaceae | |
Roystonea lenis
| León | Mem. Soc. Cub. Hist. Nat. "Felipe Poey" 17: 8 | 1943 |
| Arecaceae | |
Roystonea maisiana
| (L.H. Bailey) Zona | Fl. Neotrop. Monogr. 71: 22–23, f. 10 | 1996 |
| Arecaceae | ! |
Roystonea oleracea
| (Jacq.) O.F. Cook | Bull. Torrey Bot. Club 28(10): 554 | 1901 |
| Arecaceae | ** |
Roystonea oreodoxa
| Hilditch | The Chemical Constitution of Natural Fats 162 | 1940 |
| Arecaceae | |
Roystonea peregrina
| L.H. Bailey | Gentes Herbarum 8: 127 | 1949 |
| Arecaceae | |
Roystonea princeps
| (Becc.) Burret | Bot. Jahrb. Syst. 63: 76 | 1929 |
| Arecaceae | |
Roystonea regia
| (Kunth) O.F. Cook | Science 12(300): 479 | 1900 |
| Arecaceae | * |
Roystonea regina
| Capote & Berazaín | New York Bot. Gard. 324 | 1989 |
| Arecaceae | |
Roystonea stellata
| León | Mem. Soc. Cub. Hist. Nat. "Felipe Poey" 17: 11 | 1943 |
| Arecaceae | |
Roystonea venezuelana
| L.H. Bailey | Gentes Herbarum 8: 124 | 1949 |
| Arecaceae | |
Roystonea ventricosa
| (C.H. Wright) L.H. Bailey | Gentes Herbarum 8: 133 | 1949 |
| Arecaceae | |
Roystonea violacea
| León | Mem. Soc. Cub. Hist. Nat. "Felipe Poey" 17: 10 | 1943 |