Taxon: Juncus marginatus Rostk.

Summary

Genus:

Juncus

Family:

Juncaceae

Nomen number:

451309

Place of publication:

De Junco 38, t. 2, fig. 3. 1801

Verified:

08/01/2006 ARS Systematic Botanists.

Accessions:

2 (2 active, 2 available) in National Plant Germplasm System. (Map it)

Other conspecific taxa

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

Heterotypic Synonym(s)
Juncus biflorus Elliott

No images

Conservation Status

Reference(s)

Balslev, H. 1996. Juncaceae. Fl. Neotrop. Monogr. 68:100-104.
Correll, D. S. & M. C. Johnston. 1970. Manual of the vascular plants of Texas
Davidse, G. et al., eds. 1994. Flora mesoamericana.
FNA Editorial Committee. 1993-. Flora of North America.
Knapp, W. M. & R. C. Naczi. 2008. Taxonomy, morphology, and geographic distribution of Juncus longii (Juncaceae). Syst. Bot. 33:685-694. www.aspt.net/systematic-botany
Wunderlin, R. P. 1998. Guide to the vascular plants of Florida

Common names

Language	Name	Alternate name	note	seq	Citation
English	grass-leaf rush			1	FNA Editorial Committee. 1993-. Flora of North America.
English	shore rush			1	Wunderlin, R. P. 1998. Guide to the vascular plants of Florida

Distribution

order_code	Status	Continent	Subcontinent	Country	State	Note	Reference
1	Native	Northern America	Eastern Canada	Canada	Nova Scotia	s.	Knapp, W. M. & R. C. Naczi. 2008. Taxonomy, morphology, and geographic distribution of Juncus longii (Juncaceae). Syst. Bot. 33:685-694. www.aspt.net/systematic-botany
1	Native	Northern America	Eastern Canada	Canada	Ontario	s.e.	Knapp, W. M. & R. C. Naczi. 2008. Taxonomy, morphology, and geographic distribution of Juncus longii (Juncaceae). Syst. Bot. 33:685-694. www.aspt.net/systematic-botany
1	Native	Northern America	North-Central U.S.A.	United States	Illinois		Knapp, W. M. & R. C. Naczi. 2008. Taxonomy, morphology, and geographic distribution of Juncus longii (Juncaceae). Syst. Bot. 33:685-694. www.aspt.net/systematic-botany
1	Native	Northern America	North-Central U.S.A.	United States	Iowa		FNA Editorial Committee. 1993-. Flora of North America.
1	Native	Northern America	North-Central U.S.A.	United States	Kansas		Knapp, W. M. & R. C. Naczi. 2008. Taxonomy, morphology, and geographic distribution of Juncus longii (Juncaceae). Syst. Bot. 33:685-694. www.aspt.net/systematic-botany
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		Knapp, W. M. & R. C. Naczi. 2008. Taxonomy, morphology, and geographic distribution of Juncus longii (Juncaceae). Syst. Bot. 33:685-694. www.aspt.net/systematic-botany
1	Native	Northern America	North-Central U.S.A.	United States	Nebraska		Knapp, W. M. & R. C. Naczi. 2008. Taxonomy, morphology, and geographic distribution of Juncus longii (Juncaceae). Syst. Bot. 33:685-694. www.aspt.net/systematic-botany
1	Native	Northern America	North-Central U.S.A.	United States	Oklahoma		Knapp, W. M. & R. C. Naczi. 2008. Taxonomy, morphology, and geographic distribution of Juncus longii (Juncaceae). Syst. Bot. 33:685-694. www.aspt.net/systematic-botany
1	Native	Northern America	North-Central U.S.A.	United States	South 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		Knapp, W. M. & R. C. Naczi. 2008. Taxonomy, morphology, and geographic distribution of Juncus longii (Juncaceae). Syst. Bot. 33:685-694. www.aspt.net/systematic-botany
1	Native	Northern America	Northeastern U.S.A.	United States	Indiana		Knapp, W. M. & R. C. Naczi. 2008. Taxonomy, morphology, and geographic distribution of Juncus longii (Juncaceae). Syst. Bot. 33:685-694. www.aspt.net/systematic-botany
1	Native	Northern America	Northeastern U.S.A.	United States	Maine		Knapp, W. M. & R. C. Naczi. 2008. Taxonomy, morphology, and geographic distribution of Juncus longii (Juncaceae). Syst. Bot. 33:685-694. www.aspt.net/systematic-botany
1	Native	Northern America	Northeastern U.S.A.	United States	Massachusetts		Knapp, W. M. & R. C. Naczi. 2008. Taxonomy, morphology, and geographic distribution of Juncus longii (Juncaceae). Syst. Bot. 33:685-694. www.aspt.net/systematic-botany
1	Native	Northern America	Northeastern U.S.A.	United States	Michigan		Knapp, W. M. & R. C. Naczi. 2008. Taxonomy, morphology, and geographic distribution of Juncus longii (Juncaceae). Syst. Bot. 33:685-694. www.aspt.net/systematic-botany
1	Native	Northern America	Northeastern U.S.A.	United States	New Hampshire		Knapp, W. M. & R. C. Naczi. 2008. Taxonomy, morphology, and geographic distribution of Juncus longii (Juncaceae). Syst. Bot. 33:685-694. www.aspt.net/systematic-botany
1	Native	Northern America	Northeastern U.S.A.	United States	New Jersey		Knapp, W. M. & R. C. Naczi. 2008. Taxonomy, morphology, and geographic distribution of Juncus longii (Juncaceae). Syst. Bot. 33:685-694. www.aspt.net/systematic-botany
1	Native	Northern America	Northeastern U.S.A.	United States	New York		Knapp, W. M. & R. C. Naczi. 2008. Taxonomy, morphology, and geographic distribution of Juncus longii (Juncaceae). Syst. Bot. 33:685-694. www.aspt.net/systematic-botany
1	Native	Northern America	Northeastern U.S.A.	United States	Ohio		Knapp, W. M. & R. C. Naczi. 2008. Taxonomy, morphology, and geographic distribution of Juncus longii (Juncaceae). Syst. Bot. 33:685-694. www.aspt.net/systematic-botany
1	Native	Northern America	Northeastern U.S.A.	United States	Pennsylvania		Knapp, W. M. & R. C. Naczi. 2008. Taxonomy, morphology, and geographic distribution of Juncus longii (Juncaceae). Syst. Bot. 33:685-694. www.aspt.net/systematic-botany
1	Native	Northern America	Northeastern U.S.A.	United States	Rhode Island		Knapp, W. M. & R. C. Naczi. 2008. Taxonomy, morphology, and geographic distribution of Juncus longii (Juncaceae). Syst. Bot. 33:685-694. www.aspt.net/systematic-botany
1	Native	Northern America	Northeastern U.S.A.	United States	Vermont		Knapp, W. M. & R. C. Naczi. 2008. Taxonomy, morphology, and geographic distribution of Juncus longii (Juncaceae). Syst. Bot. 33:685-694. www.aspt.net/systematic-botany
1	Native	Northern America	Northeastern U.S.A.	United States	West Virginia		Knapp, W. M. & R. C. Naczi. 2008. Taxonomy, morphology, and geographic distribution of Juncus longii (Juncaceae). Syst. Bot. 33:685-694. www.aspt.net/systematic-botany
1	Native	Northern America	Northern Mexico	Mexico	Chihuahua		Davidse, G. et al., eds. 1994. Flora mesoamericana.
1	Native	Northern America	Northern Mexico	Mexico	Durango		Davidse, G. et al., eds. 1994. Flora mesoamericana.
1	Native	Northern America	Northern Mexico	Mexico	San Luis Potosí		Davidse, G. et al., eds. 1994. Flora mesoamericana.
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	Oregon		FNA Editorial Committee. 1993-. Flora of North America.
1	Native	Northern America	South-Central U.S.A.	United States	Texas		Knapp, W. M. & R. C. Naczi. 2008. Taxonomy, morphology, and geographic distribution of Juncus longii (Juncaceae). Syst. Bot. 33:685-694. www.aspt.net/systematic-botany
1	Native	Northern America	Southeastern U.S.A.	United States	Alabama		Knapp, W. M. & R. C. Naczi. 2008. Taxonomy, morphology, and geographic distribution of Juncus longii (Juncaceae). Syst. Bot. 33:685-694. www.aspt.net/systematic-botany
1	Native	Northern America	Southeastern U.S.A.	United States	Arkansas		Knapp, W. M. & R. C. Naczi. 2008. Taxonomy, morphology, and geographic distribution of Juncus longii (Juncaceae). Syst. Bot. 33:685-694. www.aspt.net/systematic-botany
1	Native	Northern America	Southeastern U.S.A.	United States	Delaware		Knapp, W. M. & R. C. Naczi. 2008. Taxonomy, morphology, and geographic distribution of Juncus longii (Juncaceae). Syst. Bot. 33:685-694. www.aspt.net/systematic-botany
1	Native	Northern America	Southeastern U.S.A.	United States	District of Columbia		Knapp, W. M. & R. C. Naczi. 2008. Taxonomy, morphology, and geographic distribution of Juncus longii (Juncaceae). Syst. Bot. 33:685-694. www.aspt.net/systematic-botany
1	Native	Northern America	Southeastern U.S.A.	United States	Florida		Knapp, W. M. & R. C. Naczi. 2008. Taxonomy, morphology, and geographic distribution of Juncus longii (Juncaceae). Syst. Bot. 33:685-694. www.aspt.net/systematic-botany
1	Native	Northern America	Southeastern U.S.A.	United States	Georgia		Knapp, W. M. & R. C. Naczi. 2008. Taxonomy, morphology, and geographic distribution of Juncus longii (Juncaceae). Syst. Bot. 33:685-694. www.aspt.net/systematic-botany
1	Native	Northern America	Southeastern U.S.A.	United States	Kentucky		Knapp, W. M. & R. C. Naczi. 2008. Taxonomy, morphology, and geographic distribution of Juncus longii (Juncaceae). Syst. Bot. 33:685-694. www.aspt.net/systematic-botany
1	Native	Northern America	Southeastern U.S.A.	United States	Louisiana		Knapp, W. M. & R. C. Naczi. 2008. Taxonomy, morphology, and geographic distribution of Juncus longii (Juncaceae). Syst. Bot. 33:685-694. www.aspt.net/systematic-botany
1	Native	Northern America	Southeastern U.S.A.	United States	Maryland		Knapp, W. M. & R. C. Naczi. 2008. Taxonomy, morphology, and geographic distribution of Juncus longii (Juncaceae). Syst. Bot. 33:685-694. www.aspt.net/systematic-botany
1	Native	Northern America	Southeastern U.S.A.	United States	Mississippi		Knapp, W. M. & R. C. Naczi. 2008. Taxonomy, morphology, and geographic distribution of Juncus longii (Juncaceae). Syst. Bot. 33:685-694. www.aspt.net/systematic-botany
1	Native	Northern America	Southeastern U.S.A.	United States	North Carolina		Knapp, W. M. & R. C. Naczi. 2008. Taxonomy, morphology, and geographic distribution of Juncus longii (Juncaceae). Syst. Bot. 33:685-694. www.aspt.net/systematic-botany
1	Native	Northern America	Southeastern U.S.A.	United States	South Carolina		Knapp, W. M. & R. C. Naczi. 2008. Taxonomy, morphology, and geographic distribution of Juncus longii (Juncaceae). Syst. Bot. 33:685-694. www.aspt.net/systematic-botany
1	Native	Northern America	Southeastern U.S.A.	United States	Tennessee		Knapp, W. M. & R. C. Naczi. 2008. Taxonomy, morphology, and geographic distribution of Juncus longii (Juncaceae). Syst. Bot. 33:685-694. www.aspt.net/systematic-botany
1	Native	Northern America	Southeastern U.S.A.	United States	Virginia		Knapp, W. M. & R. C. Naczi. 2008. Taxonomy, morphology, and geographic distribution of Juncus longii (Juncaceae). Syst. Bot. 33:685-694. www.aspt.net/systematic-botany
1	Native	Northern America	Southern Mexico	Mexico	Chiapas		Davidse, G. et al., eds. 1994. Flora mesoamericana.
1	Native	Northern America	Southern Mexico	Mexico	Jalisco		Davidse, G. et al., eds. 1994. Flora mesoamericana.
1	Native	Northern America	Southern Mexico	Mexico	México		Davidse, G. et al., eds. 1994. Flora mesoamericana.
1	Native	Northern America	Southern Mexico	Mexico	Oaxaca		Davidse, G. et al., eds. 1994. Flora mesoamericana.
1	Native	Northern America	Southern Mexico	Mexico	Veracruz de Ignacio de la Llave		Davidse, G. et al., eds. 1994. Flora mesoamericana.
1	Native	Northern America	Southwestern U.S.A.	United States	California		FNA Editorial Committee. 1993-. Flora of North America.
1	Native	Southern America	Brazil	Brazil		s.e.	Balslev, H. 1996. Juncaceae. Fl. Neotrop. Monogr. 68:100-104.
1	Native	Southern America	Caribbean	Bermuda			Balslev, H. 1996. Juncaceae. Fl. Neotrop. Monogr. 68:100-104.
1	Native	Southern America	Caribbean	Cuba			Balslev, H. 1996. Juncaceae. Fl. Neotrop. Monogr. 68:100-104.
1	Native	Southern America	Central America	Belize			Davidse, G. et al., eds. 1994. Flora mesoamericana.
1	Native	Southern America	Central America	Costa Rica			Davidse, G. et al., eds. 1994. Flora mesoamericana.
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	Northern South America	Venezuela			Balslev, H. 1996. Juncaceae. Fl. Neotrop. Monogr. 68:100-104.
1	Native	Southern America	Southern South America	Argentina			Balslev, H. 1996. Juncaceae. Fl. Neotrop. Monogr. 68:100-104.
1	Native	Southern America	Southern South America	Paraguay			Balslev, H. 1996. Juncaceae. Fl. Neotrop. Monogr. 68:100-104.
1	Native	Southern America	Southern South America	Uruguay			Balslev, H. 1996. Juncaceae. Fl. Neotrop. Monogr. 68:100-104.

Native
Northern America

EASTERN CANADA: Canada [Nova Scotia (s.), Ontario (s.e.)]
NORTHEASTERN U.S.A.: United States [Connecticut, Indiana, Maine, Massachusetts, Michigan, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, West Virginia]
NORTH-CENTRAL U.S.A.: United States [Illinois, Iowa, Kansas, Minnesota, Missouri, Nebraska, Oklahoma, South Dakota, Wisconsin]
NORTHWESTERN U.S.A.: United States [Colorado, Oregon]
SOUTHEASTERN U.S.A.: United States [Alabama, Arkansas, Delaware, Florida, Georgia, Kentucky, Louisiana, Maryland, Mississippi, North Carolina, South Carolina, Tennessee, Virginia, District of Columbia]
SOUTH-CENTRAL U.S.A.: United States [Texas]
SOUTHWESTERN U.S.A.: United States [California]
NORTHERN MEXICO: Mexico [Chihuahua, Durango, San Luis Potosí]
SOUTHERN MEXICO: Mexico [Chiapas, Jalisco, México, Oaxaca, Veracruz de Ignacio de la Llave]

Southern America

CARIBBEAN: Bermuda, Cuba
CENTRAL AMERICA: Belize, Costa Rica, Guatemala, Honduras, Nicaragua
NORTHERN SOUTH AMERICA: Venezuela
BRAZIL: Brazil (s.e.)
SOUTHERN SOUTH AMERICA: Argentina, Paraguay, Uruguay

Reference(s)

Balslev, H. 1996. Juncaceae. Fl. Neotrop. Monogr. 68:100-104.
Davidse, G. et al., eds. 1994. Flora mesoamericana.
FNA Editorial Committee. 1993-. Flora of North America.
Knapp, W. M. & R. C. Naczi. 2008. Taxonomy, morphology, and geographic distribution of Juncus longii (Juncaceae). Syst. Bot. 33:685-694. www.aspt.net/systematic-botany

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=451309. Accessed 12 May 2026.