Taxon: Hydrilla verticillata (L. f.) Royle

Summary

Genus:

Hydrilla

Family:

Hydrocharitaceae

Subfamily:

Hydrilloideae

Nomen number:

316414

Place of publication:

Ill. bot. Himal. Mts. 1(10):376. 1839

Protologue link:

https://www.biodiversitylibrary.org/page/2913154

Verified:

12/23/1994 ARS Systematic Botanists.

Accessions:

0 (0 active, 0 available) in National Plant Germplasm System.

Other conspecific taxa

Autonyms (not in current use), synonyms and invalid designations

Basionym
Serpicula verticillata L. f.

Images (3 total. Click on image for more.)

Links

Forestry Images – from www.forestryimages.org

Conservation Status

Reference(s)

University of Georgia Center for Invasive Species and Ecosystem Health
Acevedo-Rodríguez, P. & M. T. Strong. 2012. Catalogue of seed plants of the West Indies. Smithsonian Contr. Bot. 98
Aldén, B., S. Ryman, & M. Hjertson. 2012. Svensk Kulturväxtdatabas, SKUD (Swedish Cultivated and Utility Plants Database; online resource)
APHIS. Agricultural Risk Management System United States Department of Agriculture.
Bosser, J. M. et al., eds. 1976-. Flores des Mascareignes.
Center for Aquatic and Invasive Plants. Florida state list aquatic & wetland noxious weeds - from Department of Environmental Protection (on-line resource).
CIBA-GEIGY, Basel, Switzerland. Documenta CIBA-GEIGY (Grass weeds 1. 1980, 2. 1981; Monocot weeds 3. 1982; Dicot weeds 1. 1988) Note: four books on weeds worldwide in scope
Conant, P. et al. 1997. Appendix. Selected plant species interfering with resource management goals in North American natural areas. In: Luken, J. O. & J. W. Thieret, eds., Assessment and management of plant invasions. 255-267.
Davidse, G. et al., eds. 1994. Flora mesoamericana.
Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource).
FNA Editorial Committee. 1993-. Flora of North America.
George, A. S., ed. 1980-. Flora of Australia.
Haynes, R. R. & L. B. Holm-Nielsen. 1985. A generic treatment of Alismatidae in the Neotropics with special reference to Brazil. Acta Amazon. suppl. 15:170.
Holm, L. et al. 1979. A geographical atlas of world weeds
Huxley, A., ed. 1992. The new Royal Horticultural Society dictionary of gardening
Institute of Pacific Islands Forestry. Pacific Island Ecosystems at Risk (PIER): plant threats to Pacific ecosystems (on-line resource).
Kartesz, J. T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland.
Krasnoborov, I. M., ed. 2000-. Flora of Siberia (English translation)
Langeland, K. A. 1996. Hydrilla verticillata (L.F.) Royle (Hydrocharitaceae) The perfect aquatic weed. Castanea 61:293-304.
Lazarides, M. & B. Hince. 1993. CSIRO Handbook of Economic Plants of Australia
McGuffin, M., J. T. Kartesz, A. Y. Leung, & A. O. Tucker. 2000. Herbs of commerce, ed. 2 American Herbal Products Association, Silver Spring, Maryland.
Plant Protection and Quarantine Office. United States Department of Agriculture, Animal and Plant Health Inspection Service. Federal noxious weed list (on-line resource).
Rehm, S. 1994. Multilingual dictionary of agronomic plants
Turrill, W. B. et al., eds. 1952-. Flora of tropical East Africa.
USDA National Agricultural Library. National Invasive Species Information Center (on-line resource).
Weber, E. 2003. Invasive plant species of the world: a reference guide to environmental weeds
Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition).
2018. Mid-Atlantic invasive plant species (on-line resource)

Common names

Language	Name	seq	Citation
English	Florida-elodea	1	CIBA-GEIGY, Basel, Switzerland. Documenta CIBA-GEIGY (Grass weeds 1. 1980, 2. 1981; Monocot weeds 3. 1982; Dicot weeds 1. 1988) Note: four books on weeds worldwide in scope
English	hydrilla	1	Wiersema, J. H. & B. León. 1999. World economic plants: a standard reference CRC Press, Boca Raton, FL.
English	water-thyme	1	CIBA-GEIGY, Basel, Switzerland. Documenta CIBA-GEIGY (Grass weeds 1. 1980, 2. 1981; Monocot weeds 3. 1982; Dicot weeds 1. 1988) Note: four books on weeds worldwide in scope
German	Wasserquirl	2	Rehm, S. 1994. Multilingual dictionary of agronomic plants
Swedish	vattenkrans	2	Aldén, B., S. Ryman, & M. Hjertson. 2012. Svensk Kulturväxtdatabas, SKUD (Swedish Cultivated and Utility Plants Database; online resource)
Transcribed Chinese	hei zao	2	Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition).

Distribution

order_code	Status	Continent	Subcontinent	Country	State	Note	Reference
1	Native	Africa	East Tropical Africa	Kenya			Turrill, W. B. et al., eds. 1952-. Flora of tropical East Africa.
1	Native	Africa	East Tropical Africa	Tanzania			Turrill, W. B. et al., eds. 1952-. Flora of tropical East Africa.
1	Native	Africa	East Tropical Africa	Uganda			Turrill, W. B. et al., eds. 1952-. Flora of tropical East Africa.
1	Native	Africa	West Tropical Africa	Côte D'Ivoire			Turrill, W. B. et al., eds. 1952-. Flora of tropical East Africa.
1	Native	Africa	West Tropical Africa	Ghana			Turrill, W. B. et al., eds. 1952-. Flora of tropical East Africa.
1	Native	Africa	West-Central Tropical Africa	Burundi			Turrill, W. B. et al., eds. 1952-. Flora of tropical East Africa.
1	Native	Africa	West-Central Tropical Africa	Democratic Republic of the Congo			Turrill, W. B. et al., eds. 1952-. Flora of tropical East Africa.
1	Native	Africa	Western Indian Ocean	Madagascar
1	Native	Africa	Western Indian Ocean	Mauritius			Bosser, J. M. et al., eds. 1976-. Flores des Mascareignes.
1	Native	Africa	Western Indian Ocean	Reunion			Bosser, J. M. et al., eds. 1976-. Flores des Mascareignes.
1	Native	Asia-Temperate	China	China			Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition).
1	Native	Asia-Temperate	Eastern Asia	Japan			Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition).
1	Native	Asia-Temperate	Eastern Asia	Korea			Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition).
1	Native	Asia-Temperate	Middle Asia	Kazakhstan			Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition).
1	Native	Asia-Temperate	Siberia	Russian Federation-Eastern Siberia	Eastern Siberia		Krasnoborov, I. M., ed. 2000-. Flora of Siberia (English translation)
1	Native	Asia-Temperate	Siberia	Russian Federation-Western Siberia	Western Siberia		Krasnoborov, I. M., ed. 2000-. Flora of Siberia (English translation)
1	Native	Asia-Temperate	Western Asia	Afghanistan			Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition).
1	Native	Asia-Tropical	Indian Subcontinent	Bangladesh			Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition).
1	Native	Asia-Tropical	Indian Subcontinent	Bhutan			Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition).
1	Native	Asia-Tropical	Indian Subcontinent	India			Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition).
1	Native	Asia-Tropical	Indian Subcontinent	Nepal			Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition).
1	Native	Asia-Tropical	Indian Subcontinent	Pakistan			Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition).
1	Native	Asia-Tropical	Indian Subcontinent	Sri Lanka			Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition).
1	Native	Asia-Tropical	Indo-China	Myanmar			Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition).
1	Native	Asia-Tropical	Indo-China	Thailand			Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition).
1	Native	Asia-Tropical	Indo-China	Vietnam			Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition).
1	Native	Asia-Tropical	Malesia	Indonesia			Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition).
1	Native	Asia-Tropical	Malesia	Malaysia			Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition).
1	Native	Asia-Tropical	Malesia	Philippines			Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition).
1	Native	Asia-Tropical	Papuasia	Papua New Guinea			Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition).
1	Native	Australasia	Australia	Australia			George, A. S., ed. 1980-. Flora of Australia.
1	Native	Europe	Eastern Europe	Belarus			Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource).
1	Native	Europe	Eastern Europe	Latvia			Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource).
1	Native	Europe	Eastern Europe	Lithuania			Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource).
1	Native	Europe	Middle Europe	Germany			Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource).
1	Native	Europe	Middle Europe	Poland			Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource).
1	Native	Europe	Northern Europe	Ireland			Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource).
1	Native	Europe	Southeastern Europe	Italy			Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource).
2	Cultivated					also cult.
4	Naturalized	Africa	Macaronesia	Spain	Canarias
4	Naturalized	Australasia	New Zealand	New Zealand
4	Naturalized	Northern America		Mexico
4	Naturalized	Northern America		United States
4	Naturalized	Pacific	Northwestern Pacific	United States	Guam		Institute of Pacific Islands Forestry. Pacific Island Ecosystems at Risk (PIER): plant threats to Pacific ecosystems (on-line resource).
4	Naturalized	Pacific	Southwestern Pacific	Fiji			Institute of Pacific Islands Forestry. Pacific Island Ecosystems at Risk (PIER): plant threats to Pacific ecosystems (on-line resource).
4	Naturalized	Pacific	Southwestern Pacific	New Caledonia			Institute of Pacific Islands Forestry. Pacific Island Ecosystems at Risk (PIER): plant threats to Pacific ecosystems (on-line resource).
4	Naturalized	Southern America		South America
6	Other					exact native range obscure

Native
Africa

EAST TROPICAL AFRICA: Kenya, Tanzania, Uganda
WEST-CENTRAL TROPICAL AFRICA: Burundi, Democratic Republic of the Congo
WEST TROPICAL AFRICA: Côte D'Ivoire, Ghana
WESTERN INDIAN OCEAN: Madagascar, Mauritius, Reunion

Asia-Temperate

WESTERN ASIA: Afghanistan
SIBERIA: Russian Federation-Western Siberia [Western Siberia], Russian Federation-Eastern Siberia [Eastern Siberia]
MIDDLE ASIA: Kazakhstan
CHINA: China
EASTERN ASIA: Korea, Japan

Asia-Tropical

INDIAN SUBCONTINENT: Bangladesh, Bhutan, India, Sri Lanka, Nepal, Pakistan
PAPUASIA: Papua New Guinea
INDO-CHINA: Myanmar, Thailand, Vietnam
MALESIA: Indonesia, Malaysia, Philippines

Australasia

AUSTRALIA: Australia

Europe

NORTHERN EUROPE: Ireland
MIDDLE EUROPE: Germany, Poland
EASTERN EUROPE: Belarus, Lithuania, Latvia
SOUTHEASTERN EUROPE: Italy

Cultivated (also cult.)
Naturalized
Africa

MACARONESIA: Spain [Canarias]

Australasia

NEW ZEALAND: New Zealand

Northern America

REGION: Mexico, United States

Pacific

NORTHWESTERN PACIFIC: United States [Guam]
SOUTHWESTERN PACIFIC: Fiji, New Caledonia

Southern America

REGION: South America

Other (exact native range obscure)

Reference(s)

Bosser, J. M. et al., eds. 1976-. Flores des Mascareignes.
Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource).
George, A. S., ed. 1980-. Flora of Australia.
Institute of Pacific Islands Forestry. Pacific Island Ecosystems at Risk (PIER): plant threats to Pacific ecosystems (on-line resource).
Krasnoborov, I. M., ed. 2000-. Flora of Siberia (English translation)
Turrill, W. B. et al., eds. 1952-. Flora of tropical East Africa.
Wu Zheng-yi & P. H. Raven et al., eds. 1994-. Flora of China (English edition).

Economic Uses

Usage	Type	Note	Reference
Environmental	ornamental		Weber, E. 2003. Invasive plant species of the world: a reference guide to environmental weeds
Environmental	ornamental	aquarium plant	Huxley, A., ed. 1992. The new Royal Horticultural Society dictionary of gardening
Medicines	folklore		McGuffin, M., J. T. Kartesz, A. Y. Leung, & A. O. Tucker. 2000. Herbs of commerce, ed. 2 American Herbal Products Association, Silver Spring, Maryland.
Weed	seed contaminant	potential	Holm, L. et al. 1979. A geographical atlas of world weeds
Weed	seed contaminant	potential	Weber, E. 2003. Invasive plant species of the world: a reference guide to environmental weeds
Weed	seed contaminant	potential	CIBA-GEIGY, Basel, Switzerland. Documenta CIBA-GEIGY (Grass weeds 1. 1980, 2. 1981; Monocot weeds 3. 1982; Dicot weeds 1. 1988) Note: four books on weeds worldwide in scope

Cite as: USDA, Agricultural Research Service, National Plant Germplasm System. 2026. Germplasm Resources Information Network (GRIN Taxonomy). National Germplasm Resources Laboratory, Beltsville, Maryland.
URL: https://npgstest.ars-grin.gov/gringlobal/taxon/taxonomydetail?id=316414. Accessed 12 May 2026.