| Costa Rica | | | Burger, W. C. | 1977 | Family 53. Urticaceae. En: W.C. Burger (ed.), Flora Costaricensis | Fieldiana, Bot. | 40: 218–283 |
| Costa Rica | | | Monro, A. K. | 2001 | Synopsis of Mesoamerican Pilea (Urticaceae), including eighteen typifications and a key to the species | Bull. Nat. Hist. Mus. London, Bot. | 31(1): 9–25 |
| Costa Rica | | | SPECIMEN BASED RECORD | | Published protolog data | | |
| Costa Rica | | | Davidse, G., M. Sousa Sánchez, S. Knapp & F. Chiang Cabrera | 2015 | Saururaceae a Zygophyllaceae | Fl. Mesoamer. | 2(3): v–xvii, 1–347 |
| Costa Rica | | | Rodríguez González, A. | 2015 | Urticaceae. En: Manual de Plantas de Costa Rica. Vol. VIII. B.E. Hammel, M.H. Grayum, C. Herrera & N. Zamora (eds.) | Monogr. Syst. Bot. Missouri Bot. Gard. | 131: 464–537 |
| Costa Rica | | | Monro, A. K., D. Santamaría-Aguilar, F. González Brenes, O. Chacón, D. Solano, A. Rodríguez González, N. Zamora, E. Fedele & M. D. Correa A. | 2017 | A first checklist to the vascular plants of La Amistad International Park (PILA), Costa Rica-Panama | Phytotaxa | 322(1): 1–283 |
| Ecuador | | | Dodson, C.H. & A.H. Gentry | 1978 | Flora of the Río Palenque Science Center: Los Ríos Province, Ecuador | Selbyana | 4(1–6): i–xxx, 1–628 |
| Ecuador | Los Ríos | | Dodson, C.H. & A.H. Gentry | 1978 | Flora of the Río Palenque Science Center: Los Ríos Province, Ecuador | Selbyana | 4(1–6): i–xxx, 1–628 |
| Ecuador | Los Ríos | | 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 |
| Panama | | | D'Arcy, W. G. | 1987 | Flora of Panama. Checklist and Index. Part 1: The introduction and checklist | Monogr. Syst. Bot. Missouri Bot. Gard. | 17: v–xxx, 1–328 |
| Panama | | | Monro, A. K. | 2001 | Synopsis of Mesoamerican Pilea (Urticaceae), including eighteen typifications and a key to the species | Bull. Nat. Hist. Mus. London, Bot. | 31(1): 9–25 |
| Panama | | | Monro, A. K., D. Santamaría-Aguilar, F. González Brenes, O. Chacón, D. Solano, A. Rodríguez González, N. Zamora, E. Fedele & M. D. Correa A. | 2017 | A first checklist to the vascular plants of La Amistad International Park (PILA), Costa Rica-Panama | Phytotaxa | 322(1): 1–283 |
| Panama | | | Rodríguez González, A. | 2015 | Urticaceae. En: Manual de Plantas de Costa Rica. Vol. VIII. B.E. Hammel, M.H. Grayum, C. Herrera & N. Zamora (eds.) | Monogr. Syst. Bot. Missouri Bot. Gard. | 131: 464–537 |
| Panama | | | Davidse, G., M. Sousa Sánchez, S. Knapp & F. Chiang Cabrera | 2015 | Saururaceae a Zygophyllaceae | Fl. Mesoamer. | 2(3): v–xvii, 1–347 |
| Panama | Bocas del Toro | | Correa A., M. D., C. Galdames & M. Stapf | 2004 | (none) | Cat. Pl. Vasc. Panamá | 1–599 |
| Panama | Darién | | Correa A., M. D., C. Galdames & M. Stapf | 2004 | (none) | Cat. Pl. Vasc. Panamá | 1–599 |