Spermacoce glabra

Spermacoce glabra, smooth false buttonweed, is a New World species of plants in the coffee family.^[3]

Smooth false buttonweed
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Gentianales
Family:	Rubiaceae
Subfamily:	Rubioideae
Tribe:	Spermacoceae
Genus:	Spermacoce
Species:	S. glabra
Binomial name
Spermacoce glabra Michx. 1803 not Sessé & Moc. 1888 nor Roxb. 1820
Synonyms[1][2]
Spermacoceodes glabrum (Michx.) Kuntze Spermacoce glabra f. latifolia Chodat & Hassl. Spermacoceodes glabrum var. rectum Bacigalupo

The species is widespread across much of North America and South America. In the United States, it is found in the southern part of the Mississippi Valley from Illinois to Louisiana, the range extending westward into Texas, Oklahoma and eastern Kansas, and eastward along the Ohio River.^[4] Isolated populations are reported from farther east, in Maryland, Virginia, South Carolina, Georgia and Florida. The species also occurs in southern Mexico (Tabasco and Campeche), Honduras, and South America (Colombia, Venezuela, Ecuador, Brazil, Paraguay, Uruguay and Argentina).^{[1][5][6][7][8][9][10]}