Taxon: Cyperus congestus Vahl

Summary

Genus:

Cyperus

Family:

Cyperaceae

Subfamily:

Cyperoideae

Tribe:

Cypereae

Nomen number:

409592

Place of publication:

Enum. pl. 2:358. 1805

Verified:

12/10/2009 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

Homotypic Synonym(s)
Mariscus congestus (Vahl) C. B. Clarke

No images

Conservation Status

Reference(s)

Allan, H. H. B. et al. 1961-. Flora of New Zealand.
Archer, C. 2011. Review of Cyperaceae data for World Economic Plants, ed. 2. pers. comm. via e-mail on 13 May.
Castroviejo, S. et al., eds. 1989-. Flora iberica: plantas vasculares de la Peninsula Iberica e Islas Baleares.
Davis, P. H., ed. 1965-1988. Flora of Turkey and the east Aegean islands. Note: = Mariscus congestus (Vahl) C. B. Clarke
Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource).
Foreman, D. B. & N. G. Walsh. 1993-. Flora of Victoria.
Germishuizen, G. & N. L. Meyer, eds. 2003. Plants of southern Africa: an annotated checklist. Strelitzia 14 National Botanical Institute, Pretoria, South Africa. Note: = Mariscus congestus (Vahl) C. B. Clarke
Gordon-Gray, K. D. 1995. Cyperaceae in Natal Note: = Mariscus congestus (Vahl) C. B. Clarke
Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
Harden, G. J., ed. 1990-1993. Flora of New South Wales.
Hnatiuk, R. J. 1990. Census of Australian vascular plants. Australian Flora and Fauna Series No. 11.
Huxley, A., ed. 1992. The new Royal Horticultural Society dictionary of gardening
Jessop, J. P. & H. R. Toelken, eds. 1986. Flora of South Australia, ed. 4.
Molina G., A. M. 2011. Review of Cyperaceae data for World Economic Plants, ed. 2. pers. comm. via e-mail on 31 Mar.
Pignatti, S. 1982. Flora d'Italia.
Porcher, M. H. et al. Searchable World Wide Web Multilingual Multiscript Plant Name Database (MMPND) (on-line resource).
Tutin, T. G. et al., eds. 1964-1980. Flora europaea.
Wilson, K. L. 1997. pers. comm. Note: re. common names

Common names

Language	Name	Alternate name	note	seq	Citation
English	clustered flat sedge			1	Molina G., A. M. 2011. Review of Cyperaceae data for World Economic Plants, ed. 2. pers. comm. via e-mail on 31 Mar.
English	dense flat sedge			1	Foreman, D. B. & N. G. Walsh. 1993-. Flora of Victoria.

Distribution

order_code	Status	Continent	Subcontinent	Country	State	Note	Reference
1	Native	Africa	South Tropical Africa	Zimbabwe			Archer, C. 2011. Review of Cyperaceae data for World Economic Plants, ed. 2. pers. comm. via e-mail on 13 May.
1	Native	Africa	Southern Africa	Botswana			Germishuizen, G. & N. L. Meyer, eds. 2003. Plants of southern Africa: an annotated checklist. Strelitzia 14 National Botanical Institute, Pretoria, South Africa. Note: = Mariscus congestus (Vahl) C. B. Clarke
1	Native	Africa	Southern Africa	Eswatini			Germishuizen, G. & N. L. Meyer, eds. 2003. Plants of southern Africa: an annotated checklist. Strelitzia 14 National Botanical Institute, Pretoria, South Africa. Note: = Mariscus congestus (Vahl) C. B. Clarke
1	Native	Africa	Southern Africa	Lesotho			Germishuizen, G. & N. L. Meyer, eds. 2003. Plants of southern Africa: an annotated checklist. Strelitzia 14 National Botanical Institute, Pretoria, South Africa. Note: = Mariscus congestus (Vahl) C. B. Clarke
1	Native	Africa	Southern Africa	Namibia			Germishuizen, G. & N. L. Meyer, eds. 2003. Plants of southern Africa: an annotated checklist. Strelitzia 14 National Botanical Institute, Pretoria, South Africa. Note: = Mariscus congestus (Vahl) C. B. Clarke
1	Native	Africa	Southern Africa	South Africa	Eastern Cape		Germishuizen, G. & N. L. Meyer, eds. 2003. Plants of southern Africa: an annotated checklist. Strelitzia 14 National Botanical Institute, Pretoria, South Africa. Note: = Mariscus congestus (Vahl) C. B. Clarke
1	Native	Africa	Southern Africa	South Africa	Free State		Germishuizen, G. & N. L. Meyer, eds. 2003. Plants of southern Africa: an annotated checklist. Strelitzia 14 National Botanical Institute, Pretoria, South Africa. Note: = Mariscus congestus (Vahl) C. B. Clarke
1	Native	Africa	Southern Africa	South Africa	Gauteng		Germishuizen, G. & N. L. Meyer, eds. 2003. Plants of southern Africa: an annotated checklist. Strelitzia 14 National Botanical Institute, Pretoria, South Africa. Note: = Mariscus congestus (Vahl) C. B. Clarke
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. Note: = Mariscus congestus (Vahl) C. B. Clarke
1	Native	Africa	Southern Africa	South Africa	Limpopo		Germishuizen, G. & N. L. Meyer, eds. 2003. Plants of southern Africa: an annotated checklist. Strelitzia 14 National Botanical Institute, Pretoria, South Africa. Note: = Mariscus congestus (Vahl) C. B. Clarke
1	Native	Africa	Southern Africa	South Africa	Mpumalanga		Germishuizen, G. & N. L. Meyer, eds. 2003. Plants of southern Africa: an annotated checklist. Strelitzia 14 National Botanical Institute, Pretoria, South Africa. Note: = Mariscus congestus (Vahl) C. B. Clarke
1	Native	Africa	Southern Africa	South Africa	Northern Cape		Germishuizen, G. & N. L. Meyer, eds. 2003. Plants of southern Africa: an annotated checklist. Strelitzia 14 National Botanical Institute, Pretoria, South Africa. Note: = Mariscus congestus (Vahl) C. B. Clarke
1	Native	Africa	Southern Africa	South Africa	North-West		Germishuizen, G. & N. L. Meyer, eds. 2003. Plants of southern Africa: an annotated checklist. Strelitzia 14 National Botanical Institute, Pretoria, South Africa. Note: = Mariscus congestus (Vahl) C. B. Clarke
1	Native	Africa	Southern Africa	South Africa	Western Cape		Germishuizen, G. & N. L. Meyer, eds. 2003. Plants of southern Africa: an annotated checklist. Strelitzia 14 National Botanical Institute, Pretoria, South Africa. Note: = Mariscus congestus (Vahl) C. B. Clarke
2	Cultivated					also cult.
4	Naturalized	Africa	Middle Atlantic Ocean	St. Helena			Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
4	Naturalized	Antarctic	Subantarctic Islands	St. Helena	Tristan da Cunha		Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
4	Naturalized	Asia-Temperate	Caucasus	Azerbaijan			Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource).
4	Naturalized	Asia-Temperate	Western Asia	Turkey		n.w.	Davis, P. H., ed. 1965-1988. Flora of Turkey and the east Aegean islands. Note: = Mariscus congestus (Vahl) C. B. Clarke
4	Naturalized	Australasia	Australia	Australia			Foreman, D. B. & N. G. Walsh. 1993-. Flora of Victoria.
4	Naturalized	Australasia	New Zealand	New Zealand			Allan, H. H. B. et al. 1961-. Flora of New Zealand.
4	Naturalized	Europe	Southeastern Europe	Italy			Pignatti, S. 1982. Flora d'Italia.
4	Naturalized	Pacific	North-Central Pacific	United States	Hawaii		Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.

Native
Africa

SOUTH TROPICAL AFRICA: Zimbabwe
SOUTHERN AFRICA: Botswana, Lesotho, Namibia, Eswatini, South Africa [Eastern Cape, Free State, Gauteng, KwaZulu-Natal, Limpopo, Mpumalanga, Northern Cape, North-West, Western Cape]

Cultivated (also cult.)
Naturalized
Africa

MIDDLE ATLANTIC OCEAN: St. Helena

Antarctic

SUBANTARCTIC ISLANDS: St. Helena [Tristan da Cunha]

Asia-Temperate

WESTERN ASIA: Turkey (n.w.)
CAUCASUS: Azerbaijan

Australasia

AUSTRALIA: Australia
NEW ZEALAND: New Zealand

Europe

SOUTHEASTERN EUROPE: Italy

Pacific

NORTH-CENTRAL PACIFIC: United States [Hawaii]

Reference(s)

Allan, H. H. B. et al. 1961-. Flora of New Zealand.
Archer, C. 2011. Review of Cyperaceae data for World Economic Plants, ed. 2. pers. comm. via e-mail on 13 May.
Davis, P. H., ed. 1965-1988. Flora of Turkey and the east Aegean islands. Note: = Mariscus congestus (Vahl) C. B. Clarke
Euro+Med Editorial Committee. Euro+Med Plantbase: the information resource for Euro-Mediterranean plant diversity (on-line resource).
Foreman, D. B. & N. G. Walsh. 1993-. Flora of Victoria.
Germishuizen, G. & N. L. Meyer, eds. 2003. Plants of southern Africa: an annotated checklist. Strelitzia 14 National Botanical Institute, Pretoria, South Africa. Note: = Mariscus congestus (Vahl) C. B. Clarke
Govaerts, R. & D. A. Simpson. 2007. World checklist of Cyperaceae, sedges.
Pignatti, S. 1982. Flora d'Italia.

Economic Uses

Usage	Type	Note	Reference
Environmental	ornamental		Huxley, A., ed. 1992. The new Royal Horticultural Society dictionary of gardening
Weed			Wilson, K. L. 1997. pers. comm. Note: re. common names

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://npgsweb.ars-grin.gov/gringlobal/taxon/taxonomydetail?id=409592. Accessed 3 October 2026.