| Colombia | | | Atwood, J. T. & D. E. Mora de Retana | 1999 | Family #39 Orchidaceae: Tribe Maxillarieae: Subtribes Maxillariinae and Oncidiinae. En: W.C. Burger (ed.), Flora Costaricensis | Fieldiana, Bot., n.s. | 40: i–vi, 1–182 |
| Colombia | | | Christenson, E. A. | 2013 | (none) | Maxillaria Monogr. | 1–2: 1–936 |
| Colombia | | | Schuiteman, A. & M. W. Chase | 2015 | A reappraisal of Maxillaria (Orchidaceae) | Phytotaxa | 225(1): 1–78 |
| Colombia | | | Ulloa Ulloa, C., H. M. Hernández, G. Davidse, F. R. Barrie & S. Knapp | 2023 | Orchidaceae | Fl. Mesoamer. | 7(2): I-XXI, 1-842 |
| Colombia | Antioquia | | Idárraga-Piedrahita, A., R. del C. Ortiz, R. Callejas Posada & M. Merello | 2011 | Listado de las plantas vasculares del departamento de Antioquia | Fl. Antioquia: Cat. | 2: 9–939 |
| Costa Rica | | | Atwood, J. T. & D. E. Mora de Retana | 1999 | Family #39 Orchidaceae: Tribe Maxillarieae: Subtribes Maxillariinae and Oncidiinae. En: W.C. Burger (ed.), Flora Costaricensis | Fieldiana, Bot., n.s. | 40: i–vi, 1–182 |
| Costa Rica | | | Atwood, J. T. | 2003 | Maxillaria. En: Manual de Plantas de Costa Rica. Vol. III. B.E. Hammel, M.H. Grayum, C. Herrera & N. Zamora (eds.) | Monogr. Syst. Bot. Missouri Bot. Gard. | 93: 291–332 |
| Costa Rica | | | Christenson, E. A. | 2013 | (none) | Maxillaria Monogr. | 1–2: 1–936 |
| Costa Rica | | | Ulloa Ulloa, C., H. M. Hernández, G. Davidse, F. R. Barrie & S. Knapp | 2023 | Orchidaceae | Fl. Mesoamer. | 7(2): I-XXI, 1-842 |
| Costa Rica | | | Pupulin, F. | 2002 | Catálogo revisado y anotado de las Orchidaceae de Costa Rica | Lankesteriana | 4: 1–88 |
| Costa Rica | | | Schuiteman, A. & M. W. Chase | 2015 | A reappraisal of Maxillaria (Orchidaceae) | Phytotaxa | 225(1): 1–78 |
| Ecuador | | | Schuiteman, A. & M. W. Chase | 2015 | A reappraisal of Maxillaria (Orchidaceae) | Phytotaxa | 225(1): 1–78 |
| Ecuador | | | Ulloa Ulloa, C., H. M. Hernández, G. Davidse, F. R. Barrie & S. Knapp | 2023 | Orchidaceae | Fl. Mesoamer. | 7(2): I-XXI, 1-842 |
| Ecuador | | | Atwood, J. T. & D. E. Mora de Retana | 1999 | Family #39 Orchidaceae: Tribe Maxillarieae: Subtribes Maxillariinae and Oncidiinae. En: W.C. Burger (ed.), Flora Costaricensis | Fieldiana, Bot., n.s. | 40: i–vi, 1–182 |
| Ecuador | | | Dodson, C.H. | 1992 | Checklist of the Orchids of the Western Hemisphere | | draft: |
| Ecuador | Napo | | Jørgensen, P. M. & S. León-Yánez | 1999 | Catalogue of the Vascular Plants of Ecuador | Monogr. Syst. Bot. Missouri Bot. Gard. | 75: i–viii, 1–1181 |
| Ecuador | Napo | | Williams, L. O. | 1940 | Orchid studies—XIII. New or interesting orchids from Ecuador and Colombia | Bot. Mus. Leafl. | 9(1): 1–17, pl. i–iv |
| Ecuador | Pastaza | | Williams, L. O. | 1940 | Orchid studies—XIII. New or interesting orchids from Ecuador and Colombia | Bot. Mus. Leafl. | 9(1): 1–17, pl. i–iv |
| Ecuador | Pichincha | | Atwood, J. T. & D. E. Mora de Retana | 1999 | Family #39 Orchidaceae: Tribe Maxillarieae: Subtribes Maxillariinae and Oncidiinae. En: W.C. Burger (ed.), Flora Costaricensis | Fieldiana, Bot., n.s. | 40: i–vi, 1–182 |
| Ecuador | Pichincha | | Jørgensen, P. M. & S. León-Yánez | 1999 | Catalogue of the Vascular Plants of Ecuador | Monogr. Syst. Bot. Missouri Bot. Gard. | 75: i–viii, 1–1181 |
| Ecuador | Pichincha | | Christenson, E. A. | 2013 | (none) | Maxillaria Monogr. | 1–2: 1–936 |
| Nicaragua | | | Christenson, E. A. | 2013 | (none) | Maxillaria Monogr. | 1–2: 1–936 |
| Nicaragua | | | Schuiteman, A. & M. W. Chase | 2015 | A reappraisal of Maxillaria (Orchidaceae) | Phytotaxa | 225(1): 1–78 |
| Panama | | | Schuiteman, A. & M. W. Chase | 2015 | A reappraisal of Maxillaria (Orchidaceae) | Phytotaxa | 225(1): 1–78 |
| Panama | | | Ulloa Ulloa, C., H. M. Hernández, G. Davidse, F. R. Barrie & S. Knapp | 2023 | Orchidaceae | Fl. Mesoamer. | 7(2): I-XXI, 1-842 |
| Panama | | | Christenson, E. A. | 2013 | (none) | Maxillaria Monogr. | 1–2: 1–936 |
| Panama | | | Atwood, J. T. & D. E. Mora de Retana | 1999 | Family #39 Orchidaceae: Tribe Maxillarieae: Subtribes Maxillariinae and Oncidiinae. En: W.C. Burger (ed.), Flora Costaricensis | Fieldiana, Bot., n.s. | 40: i–vi, 1–182 |
| Panama | Chiriquí | | Correa A., M. D., C. Galdames & M. Stapf | 2004 | (none) | Cat. Pl. Vasc. Panamá | 1–599 |
| Peru | | | Ulloa Ulloa, C., H. M. Hernández, G. Davidse, F. R. Barrie & S. Knapp | 2023 | Orchidaceae | Fl. Mesoamer. | 7(2): I-XXI, 1-842 |
| Peru | | | Schuiteman, A. & M. W. Chase | 2015 | A reappraisal of Maxillaria (Orchidaceae) | Phytotaxa | 225(1): 1–78 |
| Peru | | | Atwood, J. T. & D. E. Mora de Retana | 1999 | Family #39 Orchidaceae: Tribe Maxillarieae: Subtribes Maxillariinae and Oncidiinae. En: W.C. Burger (ed.), Flora Costaricensis | Fieldiana, Bot., n.s. | 40: i–vi, 1–182 |
| Peru | | | Christenson, E. A. | 2013 | (none) | Maxillaria Monogr. | 1–2: 1–936 |
| Peru | | | Atwood, J. T. | 2003 | Maxillaria. En: Manual de Plantas de Costa Rica. Vol. III. B.E. Hammel, M.H. Grayum, C. Herrera & N. Zamora (eds.) | Monogr. Syst. Bot. Missouri Bot. Gard. | 93: 291–332 |