| 1 | Native | Northern America | Northern Mexico | Mexico | Baja California Sur | | McVaugh, R. 1983-. Flora Novo-Galiciana. |
| 1 | Native | Northern America | Northern Mexico | Mexico | Chihuahua | | McVaugh, R. 1983-. Flora Novo-Galiciana. |
| 1 | Native | Northern America | Northern Mexico | Mexico | Nuevo León | | McVaugh, R. 1983-. Flora Novo-Galiciana. |
| 1 | Native | Northern America | Northern Mexico | Mexico | San Luis Potosí | | McVaugh, R. 1983-. Flora Novo-Galiciana. |
| 1 | Native | Northern America | Northern Mexico | Mexico | Sinaloa | | McVaugh, R. 1983-. Flora Novo-Galiciana. |
| 1 | Native | Northern America | Northern Mexico | Mexico | Sonora | | McVaugh, R. 1983-. Flora Novo-Galiciana. |
| 1 | Native | Northern America | Northern Mexico | Mexico | Tamaulipas | | McVaugh, R. 1983-. Flora Novo-Galiciana. |
| 1 | Native | Northern America | South-Central U.S.A. | United States | Texas | s. | Correll, D. S. & M. C. Johnston. 1970. Manual of the vascular plants of Texas |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Florida | s. | Wunderlin, R. & B. Hansen. Atlas of Florida vascular plants (on-line resource). |
| 1 | Native | Northern America | Southern Mexico | Mexico | Campeche | | McVaugh, R. 1983-. Flora Novo-Galiciana. |
| 1 | Native | Northern America | Southern Mexico | Mexico | Chiapas | | McVaugh, R. 1983-. Flora Novo-Galiciana. |
| 1 | Native | Northern America | Southern Mexico | Mexico | Colima | | McVaugh, R. 1983-. Flora Novo-Galiciana. |
| 1 | Native | Northern America | Southern Mexico | Mexico | Guerrero | | McVaugh, R. 1983-. Flora Novo-Galiciana. |
| 1 | Native | Northern America | Southern Mexico | Mexico | Jalisco | | McVaugh, R. 1983-. Flora Novo-Galiciana. |
| 1 | Native | Northern America | Southern Mexico | Mexico | Nayarit | | McVaugh, R. 1983-. Flora Novo-Galiciana. |
| 1 | Native | Northern America | Southern Mexico | Mexico | Oaxaca | | McVaugh, R. 1983-. Flora Novo-Galiciana. |
| 1 | Native | Northern America | Southern Mexico | Mexico | Quintana Roo | | McVaugh, R. 1983-. Flora Novo-Galiciana. |
| 1 | Native | Northern America | Southern Mexico | Mexico | Veracruz de Ignacio de la Llave | | McVaugh, R. 1983-. Flora Novo-Galiciana. |
| 1 | Native | Northern America | Southern Mexico | Mexico | Yucatán | | McVaugh, R. 1983-. Flora Novo-Galiciana. |
| 1 | Native | Northern America | Southwestern U.S.A. | United States | Arizona | s. | Kearney, T. H. & R. H. Peebles. 1969. Arizona flora, ed. 2. |
| 1 | Native | Southern America | Brazil | Brazil | | | Zuloaga, F. O. & O. Morrone, eds. 1996, 1999. Catálogo de las plantas vasculares de la República Argentina. I. Pteridophyta, Gymnospermae y Angiospermae (Monocotyledonae), II. Dicotyledonae. Monogr. Syst. Bot. Missouri Bot. Gard. 60, 74. |
| 1 | Native | Southern America | Caribbean | Antigua and Barbuda | | | Howard, R. 1974-1989. Flora of the lesser Antilles. |
| 1 | Native | Southern America | Caribbean | Bahamas | | | Correll, D. S. & H. B. Correll. 1982. Flora of the Bahama archipelago. |
| 1 | Native | Southern America | Caribbean | Barbados | | | Howard, R. 1974-1989. Flora of the lesser Antilles. |
| 1 | Native | Southern America | Caribbean | Cayman Islands | | | Proctor, G. R. 1984. Flora of the Cayman Islands. Kew Bulletin Additional Series XI. |
| 1 | Native | Southern America | Caribbean | Cuba | | | Jardín Botánico Nacional. 1998-. Flora de la República de Cuba |
| 1 | Native | Southern America | Caribbean | Dominica | | | Howard, R. 1974-1989. Flora of the lesser Antilles. |
| 1 | Native | Southern America | Caribbean | Dominican Republic | | | Liogier, H. A. 1981-. Flora of Hispaniola: Part 1; La Flora de la Española. Part II-. |
| 1 | Native | Southern America | Caribbean | Grenada | | | Howard, R. 1974-1989. Flora of the lesser Antilles. |
| 1 | Native | Southern America | Caribbean | Guadeloupe | | | Howard, R. 1974-1989. Flora of the lesser Antilles. |
| 1 | Native | Southern America | Caribbean | Haiti | | | Liogier, H. A. 1981-. Flora of Hispaniola: Part 1; La Flora de la Española. Part II-. |
| 1 | Native | Southern America | Caribbean | Jamaica | | | Adams, C. 1972. Flowering plants of Jamaica |
| 1 | Native | Southern America | Caribbean | Montserrat | | | Howard, R. 1974-1989. Flora of the lesser Antilles. |
| 1 | Native | Southern America | Caribbean | United States | Puerto Rico | | Liogier, H. A. 1984-. Descriptive flora of Puerto Rico and adjacent islands. |
| 1 | Native | Southern America | Caribbean | United States | Virgin Islands, U.S. | | Acevedo-Rodríguez, P. et al. 1996. Flora of St. John, U.S. Virgin Islands. Mem. New York Bot. Gard. 78:1-581. |
| 1 | Native | Southern America | Caribbean | Virgin Islands (British) | | | Acevedo-Rodríguez, P. et al. 1996. Flora of St. John, U.S. Virgin Islands. Mem. New York Bot. Gard. 78:1-581. |
| 1 | Native | Southern America | Central America | Belize | | | Balick, M. J. et al. 2000. Checklist of the vascular plants of Belize, with common names and uses. Mem. New York Bot. Gard. 85 |
| 1 | Native | Southern America | Central America | Costa Rica | | | Standley, P. C. & J. A. Steyermark. 1946-1976. Flora of Guatemala. Note: = Waltheria americana L. |
| 1 | Native | Southern America | Central America | El Salvador | | | Standley, P. C. & J. A. Steyermark. 1946-1976. Flora of Guatemala. Note: = Waltheria americana L. |
| 1 | Native | Southern America | Central America | Guatemala | | | Standley, P. C. & J. A. Steyermark. 1946-1976. Flora of Guatemala. Note: = Waltheria americana L. |
| 1 | Native | Southern America | Central America | Honduras | | | Standley, P. C. & J. A. Steyermark. 1946-1976. Flora of Guatemala. Note: = Waltheria americana L. |
| 1 | Native | Southern America | Central America | Nicaragua | | | Stevens, W. D. et al., eds. 2001. Flora de Nicaragua. Monogr. Syst. Bot. Missouri Bot. Gard. 85(1-3). |
| 1 | Native | Southern America | Central America | Panama | | | Woodson, R. E. & R. W. Schery, eds. 1943-1980. Flora of Panama. |
| 1 | Native | Southern America | Northern South America | French Guiana | | | Boggan, J. et al. 1997. Checklist of the plants of the Guianas, ed. 2 |
| 1 | Native | Southern America | Northern South America | Guyana | | | Boggan, J. et al. 1997. Checklist of the plants of the Guianas, ed. 2 |
| 1 | Native | Southern America | Northern South America | Suriname | | | Boggan, J. et al. 1997. Checklist of the plants of the Guianas, ed. 2 |
| 1 | Native | Southern America | Northern South America | Venezuela | | | Hokche, O. et al. 2008. Nuevo catálogo de la flora vascular de Venezuela. |
| 1 | Native | Southern America | Southern South America | Argentina | | | Zuloaga, F. O. & O. Morrone, eds. 1996, 1999. Catálogo de las plantas vasculares de la República Argentina. I. Pteridophyta, Gymnospermae y Angiospermae (Monocotyledonae), II. Dicotyledonae. Monogr. Syst. Bot. Missouri Bot. Gard. 60, 74. |
| 1 | Native | Southern America | Southern South America | Chile | | | Zuloaga, F. O. & O. Morrone, eds. 1996, 1999. Catálogo de las plantas vasculares de la República Argentina. I. Pteridophyta, Gymnospermae y Angiospermae (Monocotyledonae), II. Dicotyledonae. Monogr. Syst. Bot. Missouri Bot. Gard. 60, 74. |
| 1 | Native | Southern America | Southern South America | Paraguay | | | Zuloaga, F. O. & O. Morrone, eds. 1996, 1999. Catálogo de las plantas vasculares de la República Argentina. I. Pteridophyta, Gymnospermae y Angiospermae (Monocotyledonae), II. Dicotyledonae. Monogr. Syst. Bot. Missouri Bot. Gard. 60, 74. |
| 1 | Native | Southern America | Western South America | Bolivia | | | Zuloaga, F. O. & O. Morrone, eds. 1996, 1999. Catálogo de las plantas vasculares de la República Argentina. I. Pteridophyta, Gymnospermae y Angiospermae (Monocotyledonae), II. Dicotyledonae. Monogr. Syst. Bot. Missouri Bot. Gard. 60, 74. |
| 1 | Native | Southern America | Western South America | Colombia | | | Camargo, L. A. G. 1970-. Catalogo ilustrado de las plantas de Cundinamarca (Colombia). Note: = Waltheria americana L. |
| 1 | Native | Southern America | Western South America | Peru | | | Brako, L. & J. L. Zarucchi. 1993. Catalogue of the flowering plants and gymnosperms of Peru. Monogr. Syst. Bot. Missouri Bot. Gard. 45 |
| 4 | Naturalized | | | | | widely natzd. in tropics & subtropics | |
| 6 | Other | | | | | probable origin neotropics | |