Category
page 1Spermacoceae
Bouvardia
Bouvardia is a genus of flowering plants in the family Rubiaceae. It contains about 50 species of evergreen herbs and shrubs native to Mexico and Central America, with one species extending into the southwestern United States (B. ternifolia, in Arizona, New Mexico and Texas). The genus is named in honor of Charles Bouvard (1572–1658), physician to Louis XIII, and superintendent of the Jardin du Roi in Paris.
Diodia
Diodia (or buttonweed) is a genus of flowering plants in the family Rubiaceae. It was described by Carl Linnaeus in 1753. The genus is found from southern and eastern United States, South America, Central America, Mexico, the West Indies and tropical Africa.

Diodia virginiana
species of plant

Richardia scabra
species of plant

Dentella
Dentella is a genus of flowering plants in the family Rubiaceae. Most species genus are endemic to Australia, with one species also extending through southeast Asia to subtropical Asia and the southwestern Pacific.
Mitracarpus
Mitracarpus is a plant genus in the coffee family Rubiaceae. Girdlepod is a common name for some species in this genus.

Richardia brasiliensis
species of plant
Agathisanthemum
Agathisanthemum is a genus of flowering plants in the family Rubiaceae. It was described by Johann Friedrich Klotzsch in 1861. It is found in tropical and southern Africa, on the Comoros and in Madagascar.

Bouvardia ternifolia
species of plant
Mitracarpus hirtus
species of plant
Scleromitrion diffusum
species of plant
Amphiasma
Amphiasma is a genus of 7 species of flowering plants in the family Rubiaceae. It was described by Cornelis Bremekamp in 1952. The genus is found from southern Tanzania to Namibia.
Crusea
Crusea (common name saucer flower) is a genus of angiosperms (flowering plants) in the family Rubiaceae. The genus is found in the south-western United States (Arizona and New Mexico), Mexico, and Central America. A few species are naturalized in Cuba and Puerto Rico.
Conostomium
Conostomium is a genus of flowering plants in the family Rubiaceae. The genus is found from Ethiopia to South Africa.
Bouvardia longiflora
species of plant
Cordylostigma
Cordylostigma is a genus in the Rubiaceae. The name was coined in 2010 to contain 9 species formerly belonging to the related genus Kohautia. The nine species are native to tropical and southern Africa from Guinea to Somalia to South Africa, as well as Madagascar, Comoros, and Réunion.
Richardia grandiflora
species of plant
Amphistemon
Amphistemon is a genus of 2 species of flowering plants in the family Rubiaceae. It is described by Inge Groeninckx in 2010 based on a molecular analysis of the Hedyotis-Oldenlandia group. The genus name is based on the Greek 'amphi-' (=double or of two kinds) and 'stemon' (=stamen) referring to the dimorphic stamen position characteristic for this genus.
Richardia
Richardia (Mexican-clover) is a genus of about fifteen species of flowering plants in the family Rubiaceae. They are native to tropical to warm, temperate regions of the Americas, with one species also native to Fiji. They are mostly annual plants, though a few species are herbaceous perennial plants.
Leptopetalum
Leptopetalum is a genus of flowering plants in the family Rubiaceae. The genus is widespread in tropical and subtropical Asia and the Pacific.
Galianthe
Galianthe is a genus of flowering plants in the family Rubiaceae. The genus is found from Mexico to tropical America.
Dentella repens
species of plant from tropical and subtropical Asia to the south-western Pacific
Diodella teres
species of plant

Oldenlandiopsis
Oldenlandiopsis (creeping-bluet) is a genus of flowering plants in the family Rubiaceae. It is monospecific, comprising only one species, Oldenlandiopsis callitrichoides. This species had previously been placed in Hedyotis or in Oldenlandia. It is native to the West Indies, southern Mexico, and Central America. It is naturalized elsewhere, including Florida, Hawaii, South America, and tropical Africa.
Dibrachionostylus
Dibrachionostylus is a monotypic genus of flowering plants in the family Rubiaceae. The genus contains only one species, viz. Dibrachionostylus kaessneri, which is endemic to Kenya.
Mitracarpus maxwelliae
species of plant
Arcytophyllum
Arcytophyllum is a genus of flowering plants in the family Rubiaceae. The genus contains 18 species, distributed from New Mexico to Bolivia.
Pentodon
genus of plants
Phylohydrax
Phylohydrax is a genus of plants in the family Rubiaceae. Its species are native to Madagascar, Tanzania and South Africa.
Mitracarpus polycladus
species of plant

Gomphocalyx
Gomphocalyx is a monotypic genus of flowering plants in the family Rubiaceae. The genus contains only one species, viz. Gomphocalyx herniarioides, which is endemic to Madagascar.

Stenaria
Stenaria is a genus of flowering plants in the family Rubiaceae. It is a small genus, consisting of around six species native to the United States, Mexico, and The Bahamas. All species of Stenaria are restricted to Mexico and the southwestern United States, except for the wide-ranging Stenaria nigricans which extends northward and eastward.
Spermacoceae
Spermacoceae is a tribe of flowering plants in the family Rubiaceae and contains about 1346 species in 57 genera. Its representatives are found in the tropics and subtropics.
Emmeorhiza
Emmeorhiza is a monotypic genus of flowering plants in the family Rubiaceae. The genus contains only one species, viz. Emmeorhiza umbellata, which is found from northern Trinidad to tropical South America.

Carterella
Carterella is a monotypic genus of flowering plants in the family Rubiaceae. The genus contains only one species, viz. Carterella alexanderae, which is endemic to Baja California Sur in Mexico. It grows on steep slopes in the mountains.
Scleromitrion
Scleromitrion is a genus of flowering plants in the family Rubiaceae, native to tropical and subtropical Asia and the western Pacific. The genus was first established in 1834 as a section of the genus Hedyotis, H. sect. Scleromitrion, and was raised to a full genus in 1838.
Hydrophylax
Hydrophylax is a monotypic genus of flowering plants in the family Rubiaceae. It was described by Carl Linnaeus the Younger in 1782. The genus contains only one species, Hydrophylax maritima, which is found in India, Sri Lanka and Thailand.
Exallage
Exallage is a genus of flowering plants in the family Rubiaceae. The genus is found from tropical and subtropical Asia to the southwestern Pacific.
Dentella minutissima
species of plant
Nesohedyotis
Nesohedyotis is a genus of flowering plants endemic to the island of Saint Helena in the South Atlantic Ocean. It in the family Rubiaceae (the family that includes coffee).
Astiella
Astiella is a genus of flowering plants in the family Rubiaceae. It was described by Jovet (1941) as a monospecific, herbaceous genus, endemic to Madagascar. Later, 11 new species endemic to Madagascar were added to the genus.
Leptopetalum pachyphyllum
species of plant
Denscantia
Denscantia is a genus of flowering plants in the family Rubiaceae. The genus is native to the Atlantic Forest of eastern Brazil.
Edrastima
Edrastima is a genus of flowering plants in the family Rubiaceae. The genus widespread and is found in Central and Eastern USA and the tropics and subtropics.
Schwendenera
Schwendenera is a monotypic genus of flowering plants in the family Rubiaceae. The genus contains only one species, viz. Schwendenera tetrapyxis, which is endemic to Brazil.
Anthospermopsis
Anthospermopsis is a monotypic genus of flowering plants in the family Rubiaceae. It was described by Joseph Harold Kirkbride Jr. in 1997. The genus contains only one species, viz. Anthospermopsis catechosperma, which is endemic to Bahia, Brazil.