These minute plants have the smallest flowers of any plant and are among the most invasive species. They are 1-4 mm in diameter and roughly ovate. They can live in any habitat and are commonly fed on by ducks and some frogs.
Range Description: This hydrophyte is widespread in freshwater habitats in tropical and subtropical countries across Africa, Asia, Oceania and America. Countries - Native: Afghanistan; Argentina; Aruba; Australia (Coral Sea Is. Territory, Northern Territory, Western Australia); Barbados; Belize; Benin; Bermuda; Bolivia; Brazil; Burkina Faso; Burundi; Cameroon; Cape Verde; Cayman Islands; Central African Republic; Chad; China (Anhui, Fujian, Guangdong, Guizhou, Hebei, Henan, Hubei, Jiangsu, Jiangxi, Liaoning, Qinghai, Shaanxi, Yunnan, Zhejiang); Christmas Island; Colombia; Congo; Congo, The Democratic Republic of the; Costa Rica; Côte d'Ivoire; Cuba; Dominican Republic; Ecuador; Egypt; El Salvador; Fiji; Gambia; Ghana; Guatemala; Guinea; Guinea-Bissau; Guyana; Haiti; Honduras; India; Indonesia (Bali, Kalimantan, Lesser Sunda Is., Maluku); Jamaica; Kenya; Lesotho; Liberia; Madagascar; Malawi; Malaysia; Mauritius; Mexico; Mozambique; Namibia; Nepal; New Caledonia; Nicaragua; Niger; Nigeria; Panama; Paraguay; Peru; Philippines; Puerto Rico; Réunion; Russian Federation (Khabarovsk); Rwanda; Senegal; Seychelles; Sierra Leone; South Africa; Suriname; Swaziland; Taiwan, Province of China; Tanzania, United Republic of; Thailand; Togo; Tonga; Trinidad and Tobago; Uganda; United States; Venezuela; Viet Nam; Virgin Islands, British; Virgin Islands, U.S.; Zambia; Zimbabwe"