Taxon: Juncus gerardi Loisel.

Summary

Genus:

Juncus

Family:

Juncaceae

Nomen number:

20793

Place of publication:

J. Bot. (Desvaux) 2:284. 1809

Protologue link:

https://biodiversitylibrary.org/page/8071665

Comment:

the original spelling is permissible under Shenzhen ICN Rec. 60C.2, since the given name Gerard or Gérard, which dates at least to the Early Middle Ages when Latin was the international language of Europe, has a well-established latinized form and is not correctable under Shenzhen ICN Art. 60.8

Verified:

09/21/2000 ARS Systematic Botanists.

Accessions:

59 (54 active, 33 available) in National Plant Germplasm System. (Map it)

Other conspecific taxa

Juncus gerardi var. gerardi (0 active accession[s])

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

No images

Conservation Status

Reference(s)

Davis, P. H., ed. 1965-1988. Flora of Turkey and the east Aegean islands. Note: lists as "gerardi"
FNA Editorial Committee. 1993-. Flora of North America.
Gleason, H. A. & A. Cronquist. 1991. Manual of vascular plants of northeastern United States and adjacent Canada, ed. 2
Kharkevich, S. S., ed. 1985. Vascular plants of the Russian Far East. Note: also cited as "Vascular plants of the Soviet Far East", and "Sosud. Rast. Sovet. Dal'nego Vostoka"
Kirschner, J. 2002. Juncaceae 3: Juncus subg. Agathryon. In: Orchard, A. E., ed., Species Plantarum: Flora of the World. 8:49-52.
Komarov, V. L. et al., eds. 1934-1964. Flora SSSR. Note: lists as "gerardi"
Krasnoborov, I. M., ed. 2000-. Flora of Siberia (English translation)
Rechinger, K. H., ed. 1963-. Flora iranica. Note: lists as "gerardi"
Scoggan, H. J. 1978-1979. The flora of Canada, 4 vol.
Sell, P. & G. Murrell. 1996-. Flora of Great Britain and Ireland.
Skvortsov, A. K., ed. 2006. Flora of the Lower Volga region 1:326. Note: lists as Juncus gerardii
Townsend, C. C. & E. Guest. 1966-. Flora of Iraq.
Tutin, T. G. et al., eds. 1964-1980. Flora europaea. Note: lists as "gerardi"

Common names

Language	Name	Alternate name	note	seq	Citation
English	black-grass			1	Gleason, H. A. & A. Cronquist. 1991. Manual of vascular plants of northeastern United States and adjacent Canada, ed. 2
English	saltmarsh rush			1	Sell, P. & G. Murrell. 1996-. Flora of Great Britain and Ireland.

Distribution

order_code	Status	Continent	Subcontinent	Country	State	Note	Reference
1	Native	Africa	Northern Africa	Algeria			Kirschner, J. 2002. Juncaceae 3: Juncus subg. Agathryon. In: Orchard, A. E., ed., Species Plantarum: Flora of the World. 8:49-52.
1	Native	Africa	Northern Africa	Morocco			Kirschner, J. 2002. Juncaceae 3: Juncus subg. Agathryon. In: Orchard, A. E., ed., Species Plantarum: Flora of the World. 8:49-52.
1	Native	Asia-Temperate	Caucasus	Armenia			Komarov, V. L. et al., eds. 1934-1964. Flora SSSR. Note: lists as "gerardi"
1	Native	Asia-Temperate	Caucasus	Azerbaijan			Komarov, V. L. et al., eds. 1934-1964. Flora SSSR. Note: lists as "gerardi"
1	Native	Asia-Temperate	Caucasus	Georgia			Komarov, V. L. et al., eds. 1934-1964. Flora SSSR. Note: lists as "gerardi"
1	Native	Asia-Temperate	Caucasus	Russian Federation	Dagestan		Komarov, V. L. et al., eds. 1934-1964. Flora SSSR. Note: lists as "gerardi"
1	Native	Asia-Temperate	Caucasus	Russian Federation-Ciscaucasia	Ciscaucasia		Komarov, V. L. et al., eds. 1934-1964. Flora SSSR. Note: lists as "gerardi"
1	Native	Asia-Temperate	Middle Asia	Kazakhstan			Komarov, V. L. et al., eds. 1934-1964. Flora SSSR. Note: lists as "gerardi"
1	Native	Asia-Temperate	Middle Asia	Kyrgyzstan			Kirschner, J. 2002. Juncaceae 3: Juncus subg. Agathryon. In: Orchard, A. E., ed., Species Plantarum: Flora of the World. 8:49-52.
1	Native	Asia-Temperate	Middle Asia	Tajikistan			Komarov, V. L. et al., eds. 1934-1964. Flora SSSR. Note: lists as "gerardi"
1	Native	Asia-Temperate	Middle Asia	Turkmenistan			Komarov, V. L. et al., eds. 1934-1964. Flora SSSR. Note: lists as "gerardi"
1	Native	Asia-Temperate	Middle Asia	Uzbekistan			Komarov, V. L. et al., eds. 1934-1964. Flora SSSR. Note: lists as "gerardi"
1	Native	Asia-Temperate	Mongolia	Mongolia			Kirschner, J. 2002. Juncaceae 3: Juncus subg. Agathryon. In: Orchard, A. E., ed., Species Plantarum: Flora of the World. 8:49-52.
1	Native	Asia-Temperate	Siberia	Russian Federation	Altay		Krasnoborov, I. M., ed. 2000-. Flora of Siberia (English translation)
1	Native	Asia-Temperate	Siberia	Russian Federation	Irkutsk		Krasnoborov, I. M., ed. 2000-. Flora of Siberia (English translation)
1	Native	Asia-Temperate	Siberia	Russian Federation	Kemerovskaja oblast'		Krasnoborov, I. M., ed. 2000-. Flora of Siberia (English translation)
1	Native	Asia-Temperate	Siberia	Russian Federation	Krasnoyarsk		Krasnoborov, I. M., ed. 2000-. Flora of Siberia (English translation)
1	Native	Asia-Temperate	Siberia	Russian Federation	Kurganskaja oblast'		Krasnoborov, I. M., ed. 2000-. Flora of Siberia (English translation)
1	Native	Asia-Temperate	Siberia	Russian Federation	Novosibirsk		Krasnoborov, I. M., ed. 2000-. Flora of Siberia (English translation)
1	Native	Asia-Temperate	Siberia	Russian Federation	Omsk		Krasnoborov, I. M., ed. 2000-. Flora of Siberia (English translation)
1	Native	Asia-Temperate	Siberia	Russian Federation	Tyumen	s.	Krasnoborov, I. M., ed. 2000-. Flora of Siberia (English translation)
1	Native	Asia-Temperate	Siberia	Russian Federation	Tyva, Respublika		Krasnoborov, I. M., ed. 2000-. Flora of Siberia (English translation)
1	Native	Asia-Temperate	Western Asia	Afghanistan		n.	Rechinger, K. H., ed. 1963-. Flora iranica. Note: lists as "gerardi"
1	Native	Asia-Temperate	Western Asia	Iran		n.	Rechinger, K. H., ed. 1963-. Flora iranica. Note: lists as "gerardi"
1	Native	Asia-Temperate	Western Asia	Iraq		n.	Townsend, C. C. & E. Guest. 1966-. Flora of Iraq.
1	Native	Asia-Temperate	Western Asia	Syria
1	Native	Asia-Temperate	Western Asia	Turkey			Davis, P. H., ed. 1965-1988. Flora of Turkey and the east Aegean islands. Note: lists as "gerardi"
1	Native	Europe	Eastern Europe	Estonia			Kirschner, J. 2002. Juncaceae 3: Juncus subg. Agathryon. In: Orchard, A. E., ed., Species Plantarum: Flora of the World. 8:49-52.
1	Native	Europe	Eastern Europe	Latvia			Kirschner, J. 2002. Juncaceae 3: Juncus subg. Agathryon. In: Orchard, A. E., ed., Species Plantarum: Flora of the World. 8:49-52.
1	Native	Europe	Eastern Europe	Lithuania			Kirschner, J. 2002. Juncaceae 3: Juncus subg. Agathryon. In: Orchard, A. E., ed., Species Plantarum: Flora of the World. 8:49-52.
1	Native	Europe	Eastern Europe	Russian Federation	Astrakhan		Skvortsov, A. K., ed. 2006. Flora of the Lower Volga region 1:326. Note: lists as Juncus gerardii
1	Native	Europe	Eastern Europe	Russian Federation	Saratov		Skvortsov, A. K., ed. 2006. Flora of the Lower Volga region 1:326. Note: lists as Juncus gerardii
1	Native	Europe	Eastern Europe	Russian Federation	Volgogradskaja oblast'		Skvortsov, A. K., ed. 2006. Flora of the Lower Volga region 1:326. Note: lists as Juncus gerardii
1	Native	Europe	Eastern Europe	Russian Federation-European part	European part		Komarov, V. L. et al., eds. 1934-1964. Flora SSSR. Note: lists as "gerardi"
1	Native	Europe	Eastern Europe	Ukraine		incl. Krym
1	Native	Europe	Middle Europe	Austria			Tutin, T. G. et al., eds. 1964-1980. Flora europaea. Note: lists as "gerardi"
1	Native	Europe	Middle Europe	Belgium			Tutin, T. G. et al., eds. 1964-1980. Flora europaea. Note: lists as "gerardi"
1	Native	Europe	Middle Europe	Czech Republic			Kirschner, J. 2002. Juncaceae 3: Juncus subg. Agathryon. In: Orchard, A. E., ed., Species Plantarum: Flora of the World. 8:49-52.
1	Native	Europe	Middle Europe	Germany			Tutin, T. G. et al., eds. 1964-1980. Flora europaea. Note: lists as "gerardi"
1	Native	Europe	Middle Europe	Hungary			Tutin, T. G. et al., eds. 1964-1980. Flora europaea. Note: lists as "gerardi"
1	Native	Europe	Middle Europe	Netherlands			Tutin, T. G. et al., eds. 1964-1980. Flora europaea. Note: lists as "gerardi"
1	Native	Europe	Middle Europe	Poland			Tutin, T. G. et al., eds. 1964-1980. Flora europaea. Note: lists as "gerardi"
1	Native	Europe	Middle Europe	Slovakia			Kirschner, J. 2002. Juncaceae 3: Juncus subg. Agathryon. In: Orchard, A. E., ed., Species Plantarum: Flora of the World. 8:49-52.
1	Native	Europe	Northern Europe	Denmark			Tutin, T. G. et al., eds. 1964-1980. Flora europaea. Note: lists as "gerardi"
1	Native	Europe	Northern Europe	Finland			Tutin, T. G. et al., eds. 1964-1980. Flora europaea. Note: lists as "gerardi"
1	Native	Europe	Northern Europe	Ireland			Tutin, T. G. et al., eds. 1964-1980. Flora europaea. Note: lists as "gerardi"
1	Native	Europe	Northern Europe	Norway			Tutin, T. G. et al., eds. 1964-1980. Flora europaea. Note: lists as "gerardi"
1	Native	Europe	Northern Europe	Sweden			Tutin, T. G. et al., eds. 1964-1980. Flora europaea. Note: lists as "gerardi"
1	Native	Europe	Northern Europe	United Kingdom			Tutin, T. G. et al., eds. 1964-1980. Flora europaea. Note: lists as "gerardi"
1	Native	Europe	Southeastern Europe	Bosnia and Herzegovina			Kirschner, J. 2002. Juncaceae 3: Juncus subg. Agathryon. In: Orchard, A. E., ed., Species Plantarum: Flora of the World. 8:49-52.
1	Native	Europe	Southeastern Europe	Bulgaria			Tutin, T. G. et al., eds. 1964-1980. Flora europaea. Note: lists as "gerardi"
1	Native	Europe	Southeastern Europe	Croatia			Kirschner, J. 2002. Juncaceae 3: Juncus subg. Agathryon. In: Orchard, A. E., ed., Species Plantarum: Flora of the World. 8:49-52.
1	Native	Europe	Southeastern Europe	Greece			Tutin, T. G. et al., eds. 1964-1980. Flora europaea. Note: lists as "gerardi"
1	Native	Europe	Southeastern Europe	Italy		incl. Sicily	Tutin, T. G. et al., eds. 1964-1980. Flora europaea. Note: lists as "gerardi"
1	Native	Europe	Southeastern Europe	Montenegro			Kirschner, J. 2002. Juncaceae 3: Juncus subg. Agathryon. In: Orchard, A. E., ed., Species Plantarum: Flora of the World. 8:49-52.
1	Native	Europe	Southeastern Europe	North Macedonia			Kirschner, J. 2002. Juncaceae 3: Juncus subg. Agathryon. In: Orchard, A. E., ed., Species Plantarum: Flora of the World. 8:49-52.
1	Native	Europe	Southeastern Europe	Romania			Tutin, T. G. et al., eds. 1964-1980. Flora europaea. Note: lists as "gerardi"
1	Native	Europe	Southeastern Europe	Serbia			Kirschner, J. 2002. Juncaceae 3: Juncus subg. Agathryon. In: Orchard, A. E., ed., Species Plantarum: Flora of the World. 8:49-52.
1	Native	Europe	Southeastern Europe	Slovenia			Kirschner, J. 2002. Juncaceae 3: Juncus subg. Agathryon. In: Orchard, A. E., ed., Species Plantarum: Flora of the World. 8:49-52.
1	Native	Europe	Southwestern Europe	France		incl. Corsica	Tutin, T. G. et al., eds. 1964-1980. Flora europaea. Note: lists as "gerardi"
1	Native	Europe	Southwestern Europe	Portugal			Tutin, T. G. et al., eds. 1964-1980. Flora europaea. Note: lists as "gerardi"
1	Native	Europe	Southwestern Europe	Spain			Tutin, T. G. et al., eds. 1964-1980. Flora europaea. Note: lists as "gerardi"
1	Native	Northern America	Eastern Canada	Canada	New Brunswick		FNA Editorial Committee. 1993-. Flora of North America.
1	Native	Northern America	Eastern Canada	Canada	Nova Scotia		FNA Editorial Committee. 1993-. Flora of North America.
1	Native	Northern America	Eastern Canada	Canada	Ontario	s.	FNA Editorial Committee. 1993-. Flora of North America.
1	Native	Northern America	Eastern Canada	Canada	Prince Edward Island		FNA Editorial Committee. 1993-. Flora of North America.
1	Native	Northern America	Eastern Canada	Canada	Québec	s.	FNA Editorial Committee. 1993-. Flora of North America.
1	Native	Northern America	North-Central U.S.A.	United States	Illinois	s.	FNA Editorial Committee. 1993-. Flora of North America.
1	Native	Northern America	North-Central U.S.A.	United States	Kansas		FNA Editorial Committee. 1993-. Flora of North America.
1	Native	Northern America	North-Central U.S.A.	United States	Minnesota		FNA Editorial Committee. 1993-. Flora of North America.
1	Native	Northern America	North-Central U.S.A.	United States	Missouri		FNA Editorial Committee. 1993-. Flora of North America.
1	Native	Northern America	North-Central U.S.A.	United States	North Dakota		FNA Editorial Committee. 1993-. Flora of North America.
1	Native	Northern America	North-Central U.S.A.	United States	Wisconsin		FNA Editorial Committee. 1993-. Flora of North America.
1	Native	Northern America	Northeastern U.S.A.	United States	Connecticut		FNA Editorial Committee. 1993-. Flora of North America.
1	Native	Northern America	Northeastern U.S.A.	United States	Indiana	s.	FNA Editorial Committee. 1993-. Flora of North America.
1	Native	Northern America	Northeastern U.S.A.	United States	Maine		FNA Editorial Committee. 1993-. Flora of North America.
1	Native	Northern America	Northeastern U.S.A.	United States	Massachusetts		FNA Editorial Committee. 1993-. Flora of North America.
1	Native	Northern America	Northeastern U.S.A.	United States	Michigan		FNA Editorial Committee. 1993-. Flora of North America.
1	Native	Northern America	Northeastern U.S.A.	United States	New Hampshire		FNA Editorial Committee. 1993-. Flora of North America.
1	Native	Northern America	Northeastern U.S.A.	United States	New Jersey		FNA Editorial Committee. 1993-. Flora of North America.
1	Native	Northern America	Northeastern U.S.A.	United States	New York		FNA Editorial Committee. 1993-. Flora of North America.
1	Native	Northern America	Northeastern U.S.A.	United States	Ohio		FNA Editorial Committee. 1993-. Flora of North America.
1	Native	Northern America	Northeastern U.S.A.	United States	Pennsylvania		FNA Editorial Committee. 1993-. Flora of North America.
1	Native	Northern America	Northeastern U.S.A.	United States	Rhode Island		FNA Editorial Committee. 1993-. Flora of North America.
1	Native	Northern America	Northeastern U.S.A.	United States	Vermont		FNA Editorial Committee. 1993-. Flora of North America.
1	Native	Northern America	Northwestern U.S.A.	United States	Colorado		FNA Editorial Committee. 1993-. Flora of North America.
1	Native	Northern America	Northwestern U.S.A.	United States	Montana		FNA Editorial Committee. 1993-. Flora of North America.
1	Native	Northern America	Northwestern U.S.A.	United States	Oregon		FNA Editorial Committee. 1993-. Flora of North America.
1	Native	Northern America	Northwestern U.S.A.	United States	Washington		FNA Editorial Committee. 1993-. Flora of North America.
1	Native	Northern America	Southeastern U.S.A.	United States	Delaware		FNA Editorial Committee. 1993-. Flora of North America.
1	Native	Northern America	Southeastern U.S.A.	United States	Kentucky		FNA Editorial Committee. 1993-. Flora of North America.
1	Native	Northern America	Southeastern U.S.A.	United States	Maryland		FNA Editorial Committee. 1993-. Flora of North America.
1	Native	Northern America	Southeastern U.S.A.	United States	Virginia		FNA Editorial Committee. 1993-. Flora of North America.
1	Native	Northern America	Southwestern U.S.A.	United States	Utah		FNA Editorial Committee. 1993-. Flora of North America.
1	Native	Northern America	Subarctic America	Greenland		s.	FNA Editorial Committee. 1993-. Flora of North America.
1	Native	Northern America	Western Canada	Canada	British Columbia	s.w.	FNA Editorial Committee. 1993-. Flora of North America.
1	Native	Northern America	Western Canada	Canada	Manitoba	s.	FNA Editorial Committee. 1993-. Flora of North America.
4	Naturalized	Australasia	Australia	Australia	Victoria		Kirschner, J. 2002. Juncaceae 3: Juncus subg. Agathryon. In: Orchard, A. E., ed., Species Plantarum: Flora of the World. 8:49-52.
4	Naturalized	Australasia	New Zealand	New Zealand			Kirschner, J. 2002. Juncaceae 3: Juncus subg. Agathryon. In: Orchard, A. E., ed., Species Plantarum: Flora of the World. 8:49-52.

Native
Africa

NORTHERN AFRICA: Algeria, Morocco

Asia-Temperate

WESTERN ASIA: Afghanistan (n.), Iran (n.), Iraq (n.), Syria, Turkey
CAUCASUS: Russian Federation-Ciscaucasia [Ciscaucasia], Armenia, Azerbaijan, Georgia, Russian Federation [Dagestan]
SIBERIA: Russian Federation [Altay, Irkutsk, Kemerovskaja oblast', Krasnoyarsk, Kurganskaja oblast', Novosibirsk, Omsk, Tyumen (s.), Tyva, Respublika]
MIDDLE ASIA: Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan, Uzbekistan
MONGOLIA: Mongolia

Europe

NORTHERN EUROPE: Denmark, Finland, United Kingdom, Ireland, Norway, Sweden
MIDDLE EUROPE: Austria, Belgium, Czech Republic, Germany, Hungary, Netherlands, Poland, Slovakia
EASTERN EUROPE: Russian Federation-European part [European part], Estonia, Lithuania, Latvia, Russian Federation [Astrakhan, Saratov, Volgogradskaja oblast'], Ukraine (incl. Krym)
SOUTHEASTERN EUROPE: Bulgaria, Bosnia and Herzegovina, Greece, Croatia, Italy (incl. Sicily), North Macedonia, Montenegro, Romania, Serbia, Slovenia
SOUTHWESTERN EUROPE: Spain, France (incl. Corsica), Portugal

Northern America

SUBARCTIC AMERICA: Greenland (s.)
EASTERN CANADA: Canada [New Brunswick, Nova Scotia, Ontario (s.), Prince Edward Island, Québec (s.)]
WESTERN CANADA: Canada [British Columbia (s.w.), Manitoba (s.)]
NORTHEASTERN U.S.A.: United States [Connecticut, Indiana (s.), Maine, Massachusetts, Michigan, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont]
NORTH-CENTRAL U.S.A.: United States [Illinois (s.), Kansas, Minnesota, Missouri, North Dakota, Wisconsin]
NORTHWESTERN U.S.A.: United States [Colorado, Montana, Oregon, Washington]
SOUTHEASTERN U.S.A.: United States [Delaware, Kentucky, Maryland, Virginia]
SOUTHWESTERN U.S.A.: United States [Utah]

Naturalized
Australasia

AUSTRALIA: Australia [Victoria]
NEW ZEALAND: New Zealand

Reference(s)

Davis, P. H., ed. 1965-1988. Flora of Turkey and the east Aegean islands. Note: lists as "gerardi"
FNA Editorial Committee. 1993-. Flora of North America.
Kirschner, J. 2002. Juncaceae 3: Juncus subg. Agathryon. In: Orchard, A. E., ed., Species Plantarum: Flora of the World. 8:49-52.
Komarov, V. L. et al., eds. 1934-1964. Flora SSSR. Note: lists as "gerardi"
Krasnoborov, I. M., ed. 2000-. Flora of Siberia (English translation)
Rechinger, K. H., ed. 1963-. Flora iranica. Note: lists as "gerardi"
Skvortsov, A. K., ed. 2006. Flora of the Lower Volga region 1:326. Note: lists as Juncus gerardii
Townsend, C. C. & E. Guest. 1966-. Flora of Iraq.
Tutin, T. G. et al., eds. 1964-1980. Flora europaea. Note: lists as "gerardi"

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=20793. Accessed 15 April 2026.