| Arecaceae | |
Guilielma caribaea
| (H. Karst.) H. Wendl. | Palmiers 246 | 1878 |
| Arecaceae | |
Guilielma chontaduro
| H. Karst. & Triana | Nuev. Jen. Esp. 15 | 1854 |
| Arecaceae | |
Guilielma ciliata
| (Ruiz & Pav.) H. Wendl. ex Kerch. | Palmiers 246 | 1878 |
| Arecaceae | |
Guilielma gasipaes
| (Kunth) L.H. Bailey | Gentes Herbarum 2: 187 | 1930 |
| Arecaceae | |
Guilielma granatensis
| H. Karst. | Linnaea 28: 400 | 1856 |
| Arecaceae | |
Guilielma insignis
| Mart. | Voy. Amér. Mér. 71, t. 10, f. 3, t. 29A | 1847 |
| Arecaceae | |
Guilielma macana
| Mart. | Voy. Amér. Mér. 74 | 1847 |
| Arecaceae | |
Guilielma mattogrossensis
| Barb. Rodr. | Palm. Mattogross. 33, t. 12 | 1898 |
| Arecaceae | |
Guilielma microcarpa
| Huber | Bol. Mus. Goeldi Hist. Nat. Ethnogr. 4: 476 | 1904 |
| Arecaceae | |
Guilielma piritu
| H. Karst. | Linnaea 28: 397 | 1856 |
| Arecaceae | |
Guilielma speciosa
| Mart. | Hist. Nat. Palm. 2: 81, pls. 66, 67 | 1823 |
| Arecaceae | |
Guilielma tenera
| H. Karst. | Linnaea 28: 399 | 1857 |
| Arecaceae | |
Guilielma utilis
| Oerst. | Vidensk. Meddel. Dansk Naturhist. Foren. Kjøbenhavn 1858(1–4): 46–47 | 1859 |