Taxon: Hymenachne amplexicaulis (Rudge) Nees

Summary

Genus:

Hymenachne

Family:

Poaceae (alt. Gramineae)

Subfamily:

Panicoideae

Tribe:

Paspaleae

Subtribe:

Otachyriinae

Nomen number:

316039

Place of publication:

C. F. P. von Martius et al., Fl. bras. enum. pl. 2(1):276. 1829 (Agrost. bras.)

Protologue link:

https://www.biodiversitylibrary.org/page/28853957

Comment:

Hymenachne amplexicaulis sensu Old World authors = H. acutiglume

Verified:

04/22/1991 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
Panicum amplexicaule Rudge

Images (2 total. Click on image for more.)

Conservation Status

Reference(s)

University of Georgia Center for Invasive Species and Ecosystem Health
Adams, C. 1972. Flowering plants of Jamaica
Backer, C. A. & R. C. Bakhuizen van den Brink, Jr. 1963-1968. Flora of Java.
Burger, W. C., ed. 1971-. Flora costaricensis.
Catasús Guerra, L. J. 2002. Las gramíneas (Poaceae) de Cuba, II. Cavanillesia Altera 3:1-163.
Clarkson, J. R. et al. 2011. A report of hybridisation in Hymenachne (Poaceae, Panicoideae) with description of Hymenachne × calamitosa, a new species of hybrid origin from tropical Australia. Telopea 13:105-114.
Davidse, G. et al., eds. 1994. Flora mesoamericana.
FNA Editorial Committee. 1993-. Flora of North America.
Giraldo-Cañas, D. 2011. Catálogo de la familia Poaceae en Colombia. Darwiniana 49:139-247.
Görts-van Rijn, A. R. A., ed. 1986-. Flora of the Guianas.
Grice, A. C. et al. 2011. Geographic differentiation of management objectives for invasive species: a case study of Hymenachne amplexicaulis in Australia. Environm. Sci. Policy 14:986-997.
Hanelt, P., ed. 2001. Mansfeld's encyclopedia of agricultural and horticultural crops. Volumes 1-6
Howard, R. 1974-1989. Flora of the lesser Antilles.
Integrated Botanical Information System (IBIS). Australian plant common name database (on-line resource).
Jardín Botánico Nacional. 1998-. Flora de la República de Cuba
Kress, W. J. et al. 2003. A checklist of the trees, shrubs, herbs, and climbers of Myanmar. Contr. U.S. Natl. Herb. 45
Liogier, H. A. & L. F. Martorell. 2000. Flora of Puerto Rico and adjacent islands: a systematic synopsis, ed. 2.
McVaugh, R. 1983-. Flora Novo-Galiciana.
Randall, R. P. 2007. The introduced flora of Australia and its weed status.
Tovar, Ó. 1993. Las gramíneas (Poaceae) del Perú. Ruizia 13:331.
Urbatsch, L. E. & J. K. Saichuk. 2014. Hymenachne amplexicaulis new for Louisiana. Phytoneuron 2014-50:1-4.
Wearne, L. J. et al. 2010. The biology of Australian weeds 56. 'Hymenachne amplexicaulis' (Rudge) Nees. Pl. Protect. Quart. 25:146-161.
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).
Wunderlin, R. & B. Hansen. Atlas of Florida vascular plants (on-line resource).
Zuloaga, F. O. et al. 2003. Catalogue of New World grasses (Poaceae): III. Subfamilies Panicoideae, Aristidoideae, Arundinoideae, and Danthonioideae. Contr. U.S. Natl. Herb. 46:252.

Common names

Language	Name	seq	Citation
English	olive hymenachne	1	Integrated Botanical Information System (IBIS). Australian plant common name database (on-line resource).
English	West Indian marsh grass	1	FNA Editorial Committee. 1993-. Flora of North America.
Spanish	camalote	2	Catasús Guerra, L. J. 2002. Las gramíneas (Poaceae) de Cuba, II. Cavanillesia Altera 3:1-163.

Distribution

order_code	Status	Continent	Subcontinent	Country	State	Reference
1	Native	Northern America	Northern Mexico	Mexico	Sinaloa	McVaugh, R. 1983-. Flora Novo-Galiciana.
1	Native	Northern America	Northern Mexico	Mexico	Tamaulipas	McVaugh, R. 1983-. Flora Novo-Galiciana.
1	Native	Northern America	Southern Mexico	Mexico	Campeche	Davidse, G. et al., eds. 1994. Flora mesoamericana.
1	Native	Northern America	Southern Mexico	Mexico	Chiapas	Davidse, G. et al., eds. 1994. Flora mesoamericana.
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	Michoacán de Ocampo	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	Tabasco	Davidse, G. et al., eds. 1994. Flora mesoamericana.
1	Native	Northern America	Southern Mexico	Mexico	Veracruz de Ignacio de la Llave	McVaugh, R. 1983-. Flora Novo-Galiciana.
1	Native	Southern America	Brazil	Brazil		Zuloaga, F. O. et al. 2003. Catalogue of New World grasses (Poaceae): III. Subfamilies Panicoideae, Aristidoideae, Arundinoideae, and Danthonioideae. Contr. U.S. Natl. Herb. 46:252.
1	Native	Southern America	Caribbean	Barbados		Howard, R. 1974-1989. Flora of the lesser Antilles.
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		Zuloaga, F. O. et al. 2003. Catalogue of New World grasses (Poaceae): III. Subfamilies Panicoideae, Aristidoideae, Arundinoideae, and Danthonioideae. Contr. U.S. Natl. Herb. 46:252.
1	Native	Southern America	Caribbean	Guadeloupe		Howard, R. 1974-1989. Flora of the lesser Antilles.
1	Native	Southern America	Caribbean	Haiti		Zuloaga, F. O. et al. 2003. Catalogue of New World grasses (Poaceae): III. Subfamilies Panicoideae, Aristidoideae, Arundinoideae, and Danthonioideae. Contr. U.S. Natl. Herb. 46:252.
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	United States	Puerto Rico	Liogier, H. A. & L. F. Martorell. 2000. Flora of Puerto Rico and adjacent islands: a systematic synopsis, ed. 2.
1	Native	Southern America	Central America	Belize		Davidse, G. et al., eds. 1994. Flora mesoamericana.
1	Native	Southern America	Central America	Costa Rica		Burger, W. C., ed. 1971-. Flora costaricensis.
1	Native	Southern America	Central America	El Salvador		Zuloaga, F. O. et al. 2003. Catalogue of New World grasses (Poaceae): III. Subfamilies Panicoideae, Aristidoideae, Arundinoideae, and Danthonioideae. Contr. U.S. Natl. Herb. 46:252.
1	Native	Southern America	Central America	Guatemala		Davidse, G. et al., eds. 1994. Flora mesoamericana.
1	Native	Southern America	Central America	Honduras		Davidse, G. et al., eds. 1994. Flora mesoamericana.
1	Native	Southern America	Central America	Nicaragua		Davidse, G. et al., eds. 1994. Flora mesoamericana.
1	Native	Southern America	Central America	Panama		Davidse, G. et al., eds. 1994. Flora mesoamericana.
1	Native	Southern America	Northern South America	French Guiana		Görts-van Rijn, A. R. A., ed. 1986-. Flora of the Guianas.
1	Native	Southern America	Northern South America	Guyana		Görts-van Rijn, A. R. A., ed. 1986-. Flora of the Guianas.
1	Native	Southern America	Northern South America	Suriname		Görts-van Rijn, A. R. A., ed. 1986-. Flora of the Guianas.
1	Native	Southern America	Northern South America	Venezuela		Zuloaga, F. O. et al. 2003. Catalogue of New World grasses (Poaceae): III. Subfamilies Panicoideae, Aristidoideae, Arundinoideae, and Danthonioideae. Contr. U.S. Natl. Herb. 46:252.
1	Native	Southern America	Southern South America	Paraguay		Zuloaga, F. O. et al. 2003. Catalogue of New World grasses (Poaceae): III. Subfamilies Panicoideae, Aristidoideae, Arundinoideae, and Danthonioideae. Contr. U.S. Natl. Herb. 46:252.
1	Native	Southern America	Southern South America	Uruguay		Zuloaga, F. O. et al. 2003. Catalogue of New World grasses (Poaceae): III. Subfamilies Panicoideae, Aristidoideae, Arundinoideae, and Danthonioideae. Contr. U.S. Natl. Herb. 46:252.
1	Native	Southern America	Western South America	Bolivia		Zuloaga, F. O. et al. 2003. Catalogue of New World grasses (Poaceae): III. Subfamilies Panicoideae, Aristidoideae, Arundinoideae, and Danthonioideae. Contr. U.S. Natl. Herb. 46:252.
1	Native	Southern America	Western South America	Colombia		Giraldo-Cañas, D. 2011. Catálogo de la familia Poaceae en Colombia. Darwiniana 49:139-247.
1	Native	Southern America	Western South America	Ecuador		Zuloaga, F. O. et al. 2003. Catalogue of New World grasses (Poaceae): III. Subfamilies Panicoideae, Aristidoideae, Arundinoideae, and Danthonioideae. Contr. U.S. Natl. Herb. 46:252.
1	Native	Southern America	Western South America	Peru		Tovar, Ó. 1993. Las gramíneas (Poaceae) del Perú. Ruizia 13:331.
2	Cultivated	Australasia	Australia	Australia		Hanelt, P., ed. 2001. Mansfeld's encyclopedia of agricultural and horticultural crops. Volumes 1-6
4	Naturalized	Australasia	Australia	Australia	New South Wales	Clarkson, J. R. et al. 2011. A report of hybridisation in Hymenachne (Poaceae, Panicoideae) with description of Hymenachne × calamitosa, a new species of hybrid origin from tropical Australia. Telopea 13:105-114.
4	Naturalized	Australasia	Australia	Australia	Northern Territory	Clarkson, J. R. et al. 2011. A report of hybridisation in Hymenachne (Poaceae, Panicoideae) with description of Hymenachne × calamitosa, a new species of hybrid origin from tropical Australia. Telopea 13:105-114.
4	Naturalized	Australasia	Australia	Australia	Queensland	Clarkson, J. R. et al. 2011. A report of hybridisation in Hymenachne (Poaceae, Panicoideae) with description of Hymenachne × calamitosa, a new species of hybrid origin from tropical Australia. Telopea 13:105-114.
4	Naturalized	Northern America	Southeastern U.S.A.	United States	Florida	Wunderlin, R. & B. Hansen. Atlas of Florida vascular plants (on-line resource).
4	Naturalized	Northern America	Southeastern U.S.A.	United States	Louisiana	Urbatsch, L. E. & J. K. Saichuk. 2014. Hymenachne amplexicaulis new for Louisiana. Phytoneuron 2014-50:1-4.

Native
Northern America

NORTHERN MEXICO: Mexico [Sinaloa, Tamaulipas]
SOUTHERN MEXICO: Mexico [Campeche, Chiapas, Colima, Guerrero, Jalisco, Michoacán de Ocampo, Nayarit, Oaxaca, Tabasco, Veracruz de Ignacio de la Llave]

Southern America

CARIBBEAN: Barbados, Cuba, Dominica, Dominican Republic, Guadeloupe, Haiti, Jamaica, St. Lucia, Martinique, United States [Puerto Rico]
CENTRAL AMERICA: Belize, Costa Rica, Guatemala, Honduras, Nicaragua, Panama, El Salvador
NORTHERN SOUTH AMERICA: French Guiana, Guyana, Suriname, Venezuela
BRAZIL: Brazil
WESTERN SOUTH AMERICA: Bolivia, Colombia, Ecuador, Peru
SOUTHERN SOUTH AMERICA: Paraguay, Uruguay

Cultivated
Australasia

AUSTRALIA: Australia

Naturalized
Australasia

AUSTRALIA: Australia [New South Wales, Queensland, Northern Territory]

Northern America

SOUTHEASTERN U.S.A.: United States [Florida, Louisiana]

Reference(s)

Adams, C. 1972. Flowering plants of Jamaica
Burger, W. C., ed. 1971-. Flora costaricensis.
Clarkson, J. R. et al. 2011. A report of hybridisation in Hymenachne (Poaceae, Panicoideae) with description of Hymenachne × calamitosa, a new species of hybrid origin from tropical Australia. Telopea 13:105-114.
Davidse, G. et al., eds. 1994. Flora mesoamericana.
Giraldo-Cañas, D. 2011. Catálogo de la familia Poaceae en Colombia. Darwiniana 49:139-247.
Görts-van Rijn, A. R. A., ed. 1986-. Flora of the Guianas.
Hanelt, P., ed. 2001. Mansfeld's encyclopedia of agricultural and horticultural crops. Volumes 1-6
Howard, R. 1974-1989. Flora of the lesser Antilles.
Jardín Botánico Nacional. 1998-. Flora de la República de Cuba
Liogier, H. A. & L. F. Martorell. 2000. Flora of Puerto Rico and adjacent islands: a systematic synopsis, ed. 2.
McVaugh, R. 1983-. Flora Novo-Galiciana.
Tovar, Ó. 1993. Las gramíneas (Poaceae) del Perú. Ruizia 13:331.
Urbatsch, L. E. & J. K. Saichuk. 2014. Hymenachne amplexicaulis new for Louisiana. Phytoneuron 2014-50:1-4.
Wunderlin, R. & B. Hansen. Atlas of Florida vascular plants (on-line resource).
Zuloaga, F. O. et al. 2003. Catalogue of New World grasses (Poaceae): III. Subfamilies Panicoideae, Aristidoideae, Arundinoideae, and Danthonioideae. Contr. U.S. Natl. Herb. 46:252.

Economic Uses

Usage	Type	Note	Reference
Animal food	forage		Weber, E. 2003. Invasive plant species of the world: a reference guide to environmental weeds
Weed			Weber, E. 2003. Invasive plant species of the world: a reference guide to environmental weeds

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=316039. Accessed 12 May 2026.