| 1 | Native | Africa | Northeast Tropical Africa | Somalia | | | Thulin, M., ed. 1993-. Flora of Somalia. |
| 1 | Native | Africa | South Tropical Africa | Mozambique | | pantropic | Exell, A. W. et al., eds. 1960-. Flora zambesiaca. |
| 1 | Native | Africa | Southern Africa | Eswatini | | possibly | Germishuizen, G. & N. L. Meyer, eds. 2003. Plants of southern Africa: an annotated checklist. Strelitzia 14 National Botanical Institute, Pretoria, South Africa. |
| 1 | Native | Africa | Southern Africa | South Africa | KwaZulu-Natal | | Germishuizen, G. & N. L. Meyer, eds. 2003. Plants of southern Africa: an annotated checklist. Strelitzia 14 National Botanical Institute, Pretoria, South Africa. |
| 1 | Native | Africa | West Tropical Africa | Nigeria | | | Keay, R. W. J. & F. N. Hepper. 1953-1972. Flora of west tropical Africa, ed. 2. |
| 1 | Native | Africa | Western Indian Ocean | Madagascar | | | Thulin, M., ed. 1993-. Flora of Somalia. |
| 1 | Native | Asia-Temperate | China | China | Fujian Sheng | | Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition). |
| 1 | Native | Asia-Temperate | China | China | Guangdong Sheng | | Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition). |
| 1 | Native | Asia-Temperate | China | China | Guangxi Zhuangzu Zizhiqu | | Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition). |
| 1 | Native | Asia-Temperate | China | China | Hainan Sheng | | Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition). |
| 1 | Native | Asia-Temperate | China | China | Yunnan Sheng | | Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition). |
| 1 | Native | Asia-Temperate | Eastern Asia | Taiwan | | | Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition). |
| 1 | Native | Asia-Tropical | Indian Subcontinent | Bhutan | | | Grierson, A. J. C. & D. J. Long. 1984-. Flora of Bhutan including a record of plants from Sikkim. |
| 1 | Native | Asia-Tropical | Indian Subcontinent | India | | | Grierson, A. J. C. & D. J. Long. 1984-. Flora of Bhutan including a record of plants from Sikkim. |
| 1 | Native | Asia-Tropical | Indian Subcontinent | Sri Lanka | | | Dassanayake, M. D. & F. R. Fosberg, eds. 1980-. A revised handbook to the flora of Ceylon. |
| 1 | Native | Asia-Tropical | Indo-China | Cambodia | | | Aubréville, A. et al., eds. 1960-. Flore du Cambodge du Laos et du Viet-Nam. Note: lists as"monnieri" |
| 1 | Native | Asia-Tropical | Indo-China | Laos | | | Aubréville, A. et al., eds. 1960-. Flore du Cambodge du Laos et du Viet-Nam. Note: lists as"monnieri" |
| 1 | Native | Asia-Tropical | Indo-China | Thailand | | | Smitinand, T. & K. Larsen, eds. 1970-. Flora of Thailand. Note: lists as"monnieri" |
| 1 | Native | Asia-Tropical | Indo-China | Vietnam | | | Aubréville, A. et al., eds. 1960-. Flore du Cambodge du Laos et du Viet-Nam. Note: lists as"monnieri" |
| 1 | Native | Asia-Tropical | Malesia | Indonesia | | | Backer, C. A. & R. C. Bakhuizen van den Brink, Jr. 1963-1968. Flora of Java. |
| 1 | Native | Asia-Tropical | Malesia | Malaysia | | | Smitinand, T. & K. Larsen, eds. 1970-. Flora of Thailand. Note: lists as"monnieri" |
| 1 | Native | Asia-Tropical | Malesia | Philippines | | | Merrill, E. D. 1922-1926. An enumeration of Philippine flowering plants. |
| 1 | Native | Australasia | Australia | Australia | New South Wales | e. | Harden, G. J., ed. 2002. Flora of New South Wales, ed. 2. |
| 1 | Native | Australasia | Australia | Australia | Queensland | e. | Stanley, T. D. & E. M. Ross. 1983-1989. Flora of south-eastern Queensland. |
| 1 | Native | Northern America | Northern Mexico | Mexico | Baja California (Norte) | | Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:837. |
| 1 | Native | Northern America | Northern Mexico | Mexico | Baja California Sur | | Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:837. |
| 1 | Native | Northern America | Northern Mexico | Mexico | Coahuila de Zaragoza | | Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:837. |
| 1 | Native | Northern America | Northern Mexico | Mexico | Nuevo León | | Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:837. |
| 1 | Native | Northern America | Northern Mexico | Mexico | San Luis Potosí | | Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:837. |
| 1 | Native | Northern America | Northern Mexico | Mexico | Sinaloa | | Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:837. |
| 1 | Native | Northern America | Northern Mexico | Mexico | Sonora | | Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:837. |
| 1 | Native | Northern America | Northern Mexico | Mexico | Tamaulipas | | Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:837. |
| 1 | Native | Northern America | Northern Mexico | Mexico | Zacatecas | | Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:837. |
| 1 | Native | Northern America | South-Central U.S.A. | United States | Texas | | Godfrey, R. K. & J. W. Wooten. 1979-1981. Aquatic and wetland plants of southeastern United States, 2 vol. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Alabama | | Godfrey, R. K. & J. W. Wooten. 1979-1981. Aquatic and wetland plants of southeastern United States, 2 vol. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Florida | | Godfrey, R. K. & J. W. Wooten. 1979-1981. Aquatic and wetland plants of southeastern United States, 2 vol. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Georgia | | Weakley, A. S. 2007. Flora of the Carolinas, Virginia, and Georgia, and surrounding areas. Note: lists as"monnieri" |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Louisiana | | Godfrey, R. K. & J. W. Wooten. 1979-1981. Aquatic and wetland plants of southeastern United States, 2 vol. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Mississippi | | Godfrey, R. K. & J. W. Wooten. 1979-1981. Aquatic and wetland plants of southeastern United States, 2 vol. |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | North Carolina | | Weakley, A. S. 2007. Flora of the Carolinas, Virginia, and Georgia, and surrounding areas. Note: lists as"monnieri" |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | South Carolina | | Weakley, A. S. 2007. Flora of the Carolinas, Virginia, and Georgia, and surrounding areas. Note: lists as"monnieri" |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Virginia | s.e. | Weakley, A. S. 2007. Flora of the Carolinas, Virginia, and Georgia, and surrounding areas. Note: lists as"monnieri" |
| 1 | Native | Northern America | Southern Mexico | Mexico | Aguascalientes | | Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:837. |
| 1 | Native | Northern America | Southern Mexico | Mexico | Campeche | | Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:837. |
| 1 | Native | Northern America | Southern Mexico | Mexico | Chiapas | | Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:837. |
| 1 | Native | Northern America | Southern Mexico | Mexico | Ciudad de México | | Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:837. |
| 1 | Native | Northern America | Southern Mexico | Mexico | Colima | | Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:837. |
| 1 | Native | Northern America | Southern Mexico | Mexico | Guanajuato | | Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:837. |
| 1 | Native | Northern America | Southern Mexico | Mexico | Guerrero | | Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:837. |
| 1 | Native | Northern America | Southern Mexico | Mexico | Hidalgo | | Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:837. |
| 1 | Native | Northern America | Southern Mexico | Mexico | Jalisco | | Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:837. |
| 1 | Native | Northern America | Southern Mexico | Mexico | México | | Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:837. |
| 1 | Native | Northern America | Southern Mexico | Mexico | Michoacán de Ocampo | | Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:837. |
| 1 | Native | Northern America | Southern Mexico | Mexico | Morelos | | Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:837. |
| 1 | Native | Northern America | Southern Mexico | Mexico | Nayarit | | Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:837. |
| 1 | Native | Northern America | Southern Mexico | Mexico | Oaxaca | | Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:837. |
| 1 | Native | Northern America | Southern Mexico | Mexico | Puebla | | Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:837. |
| 1 | Native | Northern America | Southern Mexico | Mexico | Querétaro | | Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:837. |
| 1 | Native | Northern America | Southern Mexico | Mexico | Quintana Roo | | Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:837. |
| 1 | Native | Northern America | Southern Mexico | Mexico | Tabasco | | Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:837. |
| 1 | Native | Northern America | Southern Mexico | Mexico | Veracruz de Ignacio de la Llave | | Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:837. |
| 1 | Native | Northern America | Southern Mexico | Mexico | Yucatán | | Villaseñor, J. L. 2016. Checklist of the native vascular plants of Mexico. Rev. Mex. Biodivers. 87:837. |
| 1 | Native | Southern America | Brazil | Brazil | | | Wanderley, M. G. L., ed. 2001-. Flora fanerogâmica do Estado de São Paulo |
| 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 | Cuba | | | León (J. S. Sauget) & Alain (E. E. Liogier). 1946-1969. Flora de Cuba |
| 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 | Martinique | | | Howard, R. 1974-1989. Flora of the lesser Antilles. |
| 1 | Native | Southern America | Caribbean | St. Lucia | | | Howard, R. 1974-1989. Flora of the lesser Antilles. |
| 1 | Native | Southern America | Caribbean | Trinidad and Tobago | Trinidad | | Harling, G. & B. Sparre, eds. 1973-. Flora of Ecuador. Note: lists as"monnieri" |
| 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) | Tortola | | 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 Note: lists as"monnieri" |
| 1 | Native | Southern America | Central America | Costa Rica | | | Burger, W. C., ed. 1971-. Flora costaricensis. |
| 1 | Native | Southern America | Central America | El Salvador | | | Standley, P. C. & J. A. Steyermark. 1946-1976. Flora of Guatemala. Note: lists as"monnieri" |
| 1 | Native | Southern America | Central America | Guatemala | | | Standley, P. C. & J. A. Steyermark. 1946-1976. Flora of Guatemala. Note: lists as"monnieri" |
| 1 | Native | Southern America | Central America | Honduras | | | Standley, P. C. & J. A. Steyermark. 1946-1976. Flora of Guatemala. Note: lists as"monnieri" |
| 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). Note: = "Bacopa monnieri" (L.) Wettst. |
| 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 | | | Funk, V. et al. 2007. Checklist of the plants of the Guiana Shield (Venezuela: Amazonas, Bolivar, Delta Amacuro; Guyana, Surinam, French Guiana). Contr. U.S. Natl. Herb. 55:1-584. Note: lists as"monnieri" |
| 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 | 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 | Ecuador | | | Harling, G. & B. Sparre, eds. 1973-. Flora of Ecuador. Note: lists as"monnieri" |
| 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 |
| 2 | Cultivated | | | | | also cult. | |