Hydrilla Rich.

Native to:

Afghanistan, Altay, Amur, Assam, Baltic States, Bangladesh, Belarus, Borneo, Burundi, Cambodia, China North-Central, China South-Central, China Southeast, DR Congo, East Himalaya, Hainan, India, Iran, Irkutsk, Japan, Jawa, Kazakhstan, Kenya, Khabarovsk, Korea, Krasnoyarsk, Laos, Lesser Sunda Is., Malaya, Maluku, Manchuria, Marianas, Mongolia, Myanmar, Nansei-shoto, Nepal, New Caledonia, New Guinea, New South Wales, Northern Territory, Northwest European Russia, Pakistan, Philippines, Poland, Primorye, Queensland, Rwanda, South Australia, Sri Lanka, Sulawesi, Sumatera, Taiwan, Tanzania, Thailand, Tibet, Uganda, Victoria, Vietnam, West Himalaya, West Siberia, Western Australia, Yakutiya, Zambia

Introduced into:

Alabama, Arizona, Aruba, California, Canary Is., Colombia, Connecticut, Costa Rica, Cuba, Delaware, District of Columbia, Fiji, Florida, Georgia, Germany, Ghana, Great Britain, Honduras, Indiana, Ireland, Ivory Coast, Jamaica, Kansas, Kentucky, Leeward Is., Louisiana, Madagascar, Maine, Maryland, Massachusetts, Mauritius, Mexico Northeast, Mississippi, Missouri, Mozambique, New York, New Zealand North, Nicaragua, North Carolina, Ohio, Oregon, Panamá, Pennsylvania, Réunion, South Carolina, Tennessee, Texas, Trinidad-Tobago, Venezuela, Virginia, Washington, West Virginia, Windward Is., Wisconsin

POWO follows these authorities in accepting this name:

• Govaerts, R.H.A. (2011). World checklist of selected plant families published update Facilitated by the Trustees of the Royal Botanic Gardens, Kew.
• Stalažs, A. (2024). List of vascular plants of Latvia (with Latvian names): 1-312. Dobele.

Flora Zambesiaca

• Cook & Lüönd in Aquatic Bot. 13: 485–504 (1982).
• Rich. in Mém. Cl. Sci. Math. Inst. Nat. France 181 (2): 9, 61, 73, 75 (1814).

Flora of Tropical East Africa

• Cook & Lüönd in Aquat. Bot. 13: 485 (1982)
• Wright in F.T.A. 7: 1 (1897)
• in Mém. Cl. Sci. Math. Phys. Inst. France 1811(2): 9, 61, 69, 75 (1812, published 1814)