''Couma'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial n ...

flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. They include all forbs (flowering plants without a woody stem), grasses and grass-like plants, a vast majority of ...

s in the

family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

Apocynaceae Apocynaceae (from ''Apocynum'', Greek for "dog-away") is a family of flowering plants that includes trees, shrubs, herbs, stem succulents, and vines, commonly known as the dogbane family, because some taxa were used as dog poison Members of the ...

first described as a genus in 1775. It is native to

South America South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the souther ...

and

Central America Central America ( es, América Central or ) is a subregion of the Americas. Its boundaries are defined as bordering the United States to the north, Colombia to the south, the Caribbean Sea to the east, and the Pacific Ocean to the west. ...

.Kew World Checklist of Selected Plant Families
/ref> ;Species * ''

Couma catingae ''Couma'' is a genus of flowering plants in the family Apocynaceae first described as a genus in 1775. It is native to South America and Central America. ;Species * '' Couma catingae'' Ducke - Colombia, Venezuela, Guyana, NW Brazil * '' Couma gu ...

'' Ducke - Colombia, Venezuela, Guyana, NW Brazil * ''

Couma guianensis ''Couma'' is a genus of flowering plants in the family Apocynaceae first described as a genus in 1775. It is native to South America and Central America. ;Species * ''Couma catingae'' Ducke - Colombia, Venezuela, Guyana, NW Brazil * '' Couma gui ...

'' Aubl. - Pará, the Guianas * ''

Couma macrocarpa ''Couma macrocarpa'', known by the common names leche caspi, leche huayo, sorva (a name it shares with its smaller relative ''Couma utilis''), and cow tree, is a species of tropical plant native to tropical, humid Central and South America from ...

'' Barb.Rodr. - widespread from Belize to Bolivia * ''

Couma rigida ''Couma'' is a genus of flowering plants in the family Apocynaceae first described as a genus in 1775. It is native to South America and Central America. ;Species * ''Couma catingae'' Ducke - Colombia, Venezuela, Guyana, NW Brazil * ''Couma guia ...

'' Müll.Arg. - Venezuela, Guyana, N Brazil * ''

Couma utilis ''Couma utilis'', called the milk tree, sorvinha, sorveira, sorva (a name it shares with its larger relative '' Couma macrocarpa''), and sorva-pequena, is a species of flowering plant in the subfamily Rauvolfioideae, native to the Orinoco and Ama ...

'' (Mart.) Müll.Arg. - Colombia, Venezuela, NW Brazil

References

Apocynaceae genera {{Apocynaceae-stub