Taxon: Houstonia longifolia Gaertn.

Summary

Genus:

Houstonia

Family:

Rubiaceae

Subfamily:

Rubioideae

Tribe:

Spermacoceae

Nomen number:

474845

Place of publication:

Fruct. sem. pl. 1:226. 1788

Verified:

06/01/2015 ARS Systematic Botanists.

Accessions:

2 (2 active, 1 available) in National Plant Germplasm System. (Map it)

Other conspecific taxa

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

No images

Conservation Status

Reference(s)

Terrell, E. E. 1996. Revision of Houstonia (Rubiaceae-Hedyotideae). Syst. Bot. Monogr. 48:62-69.

Common names

Distribution

order_code	Status	Continent	Subcontinent	Country	State	Note	Reference
1	Native	Northern America	Eastern Canada	Canada	Ontario		Terrell, E. E. 1996. Revision of Houstonia (Rubiaceae-Hedyotideae). Syst. Bot. Monogr. 48:62-69.
1	Native	Northern America	North-Central U.S.A.	United States	Illinois		Terrell, E. E. 1996. Revision of Houstonia (Rubiaceae-Hedyotideae). Syst. Bot. Monogr. 48:62-69.
1	Native	Northern America	North-Central U.S.A.	United States	Kansas	s.e.	Terrell, E. E. 1996. Revision of Houstonia (Rubiaceae-Hedyotideae). Syst. Bot. Monogr. 48:62-69.
1	Native	Northern America	North-Central U.S.A.	United States	Minnesota		Terrell, E. E. 1996. Revision of Houstonia (Rubiaceae-Hedyotideae). Syst. Bot. Monogr. 48:62-69.
1	Native	Northern America	North-Central U.S.A.	United States	Missouri		Terrell, E. E. 1996. Revision of Houstonia (Rubiaceae-Hedyotideae). Syst. Bot. Monogr. 48:62-69.
1	Native	Northern America	North-Central U.S.A.	United States	North Dakota	n.e.	Terrell, E. E. 1996. Revision of Houstonia (Rubiaceae-Hedyotideae). Syst. Bot. Monogr. 48:62-69.
1	Native	Northern America	North-Central U.S.A.	United States	Oklahoma	e.	Terrell, E. E. 1996. Revision of Houstonia (Rubiaceae-Hedyotideae). Syst. Bot. Monogr. 48:62-69.
1	Native	Northern America	North-Central U.S.A.	United States	Wisconsin		Terrell, E. E. 1996. Revision of Houstonia (Rubiaceae-Hedyotideae). Syst. Bot. Monogr. 48:62-69.
1	Native	Northern America	Northeastern U.S.A.	United States	Connecticut		Terrell, E. E. 1996. Revision of Houstonia (Rubiaceae-Hedyotideae). Syst. Bot. Monogr. 48:62-69.
1	Native	Northern America	Northeastern U.S.A.	United States	Indiana		Terrell, E. E. 1996. Revision of Houstonia (Rubiaceae-Hedyotideae). Syst. Bot. Monogr. 48:62-69.
1	Native	Northern America	Northeastern U.S.A.	United States	Maine		Terrell, E. E. 1996. Revision of Houstonia (Rubiaceae-Hedyotideae). Syst. Bot. Monogr. 48:62-69.
1	Native	Northern America	Northeastern U.S.A.	United States	Massachusetts		Terrell, E. E. 1996. Revision of Houstonia (Rubiaceae-Hedyotideae). Syst. Bot. Monogr. 48:62-69.
1	Native	Northern America	Northeastern U.S.A.	United States	Michigan		Terrell, E. E. 1996. Revision of Houstonia (Rubiaceae-Hedyotideae). Syst. Bot. Monogr. 48:62-69.
1	Native	Northern America	Northeastern U.S.A.	United States	New Hampshire		Terrell, E. E. 1996. Revision of Houstonia (Rubiaceae-Hedyotideae). Syst. Bot. Monogr. 48:62-69.
1	Native	Northern America	Northeastern U.S.A.	United States	New Jersey		Terrell, E. E. 1996. Revision of Houstonia (Rubiaceae-Hedyotideae). Syst. Bot. Monogr. 48:62-69.
1	Native	Northern America	Northeastern U.S.A.	United States	New York		Terrell, E. E. 1996. Revision of Houstonia (Rubiaceae-Hedyotideae). Syst. Bot. Monogr. 48:62-69.
1	Native	Northern America	Northeastern U.S.A.	United States	Ohio		Terrell, E. E. 1996. Revision of Houstonia (Rubiaceae-Hedyotideae). Syst. Bot. Monogr. 48:62-69.
1	Native	Northern America	Northeastern U.S.A.	United States	Pennsylvania		Terrell, E. E. 1996. Revision of Houstonia (Rubiaceae-Hedyotideae). Syst. Bot. Monogr. 48:62-69.
1	Native	Northern America	Northeastern U.S.A.	United States	Rhode Island		Terrell, E. E. 1996. Revision of Houstonia (Rubiaceae-Hedyotideae). Syst. Bot. Monogr. 48:62-69.
1	Native	Northern America	Northeastern U.S.A.	United States	Vermont		Terrell, E. E. 1996. Revision of Houstonia (Rubiaceae-Hedyotideae). Syst. Bot. Monogr. 48:62-69.
1	Native	Northern America	Northeastern U.S.A.	United States	West Virginia		Terrell, E. E. 1996. Revision of Houstonia (Rubiaceae-Hedyotideae). Syst. Bot. Monogr. 48:62-69.
1	Native	Northern America	Southeastern U.S.A.	United States	Alabama		Terrell, E. E. 1996. Revision of Houstonia (Rubiaceae-Hedyotideae). Syst. Bot. Monogr. 48:62-69.
1	Native	Northern America	Southeastern U.S.A.	United States	Arkansas		Terrell, E. E. 1996. Revision of Houstonia (Rubiaceae-Hedyotideae). Syst. Bot. Monogr. 48:62-69.
1	Native	Northern America	Southeastern U.S.A.	United States	Florida	n.w.	Terrell, E. E. 1996. Revision of Houstonia (Rubiaceae-Hedyotideae). Syst. Bot. Monogr. 48:62-69.
1	Native	Northern America	Southeastern U.S.A.	United States	Georgia		Terrell, E. E. 1996. Revision of Houstonia (Rubiaceae-Hedyotideae). Syst. Bot. Monogr. 48:62-69.
1	Native	Northern America	Southeastern U.S.A.	United States	Kentucky		Terrell, E. E. 1996. Revision of Houstonia (Rubiaceae-Hedyotideae). Syst. Bot. Monogr. 48:62-69.
1	Native	Northern America	Southeastern U.S.A.	United States	Maryland		Terrell, E. E. 1996. Revision of Houstonia (Rubiaceae-Hedyotideae). Syst. Bot. Monogr. 48:62-69.
1	Native	Northern America	Southeastern U.S.A.	United States	Mississippi		Terrell, E. E. 1996. Revision of Houstonia (Rubiaceae-Hedyotideae). Syst. Bot. Monogr. 48:62-69.
1	Native	Northern America	Southeastern U.S.A.	United States	North Carolina		Terrell, E. E. 1996. Revision of Houstonia (Rubiaceae-Hedyotideae). Syst. Bot. Monogr. 48:62-69.
1	Native	Northern America	Southeastern U.S.A.	United States	South Carolina		Terrell, E. E. 1996. Revision of Houstonia (Rubiaceae-Hedyotideae). Syst. Bot. Monogr. 48:62-69.
1	Native	Northern America	Southeastern U.S.A.	United States	Tennessee		Terrell, E. E. 1996. Revision of Houstonia (Rubiaceae-Hedyotideae). Syst. Bot. Monogr. 48:62-69.
1	Native	Northern America	Southeastern U.S.A.	United States	Virginia		Terrell, E. E. 1996. Revision of Houstonia (Rubiaceae-Hedyotideae). Syst. Bot. Monogr. 48:62-69.
1	Native	Northern America	Western Canada	Canada	Alberta		Terrell, E. E. 1996. Revision of Houstonia (Rubiaceae-Hedyotideae). Syst. Bot. Monogr. 48:62-69.
1	Native	Northern America	Western Canada	Canada	Manitoba	s.	Terrell, E. E. 1996. Revision of Houstonia (Rubiaceae-Hedyotideae). Syst. Bot. Monogr. 48:62-69.
1	Native	Northern America	Western Canada	Canada	Saskatchewan		Terrell, E. E. 1996. Revision of Houstonia (Rubiaceae-Hedyotideae). Syst. Bot. Monogr. 48:62-69.

Native
Northern America

EASTERN CANADA: Canada [Ontario]
WESTERN CANADA: Canada [Saskatchewan, Alberta, Manitoba (s.)]
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, Kansas (s.e.), Minnesota, Missouri, North Dakota (n.e.), Oklahoma (e.), Wisconsin]
SOUTHEASTERN U.S.A.: United States [Alabama, Arkansas, Florida (n.w.), Georgia, Kentucky, Maryland, Mississippi, North Carolina, South Carolina, Tennessee, Virginia]

Reference(s)

Terrell, E. E. 1996. Revision of Houstonia (Rubiaceae-Hedyotideae). Syst. Bot. Monogr. 48:62-69.

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=474845. Accessed 12 May 2026.