''Haematostemon'' 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 ...

plant Plants are predominantly Photosynthesis, photosynthetic eukaryotes of the Kingdom (biology), kingdom Plantae. Historically, the plant kingdom encompassed all living things that were not animals, and included algae and fungi; however, all curr ...

of 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 ...

Euphorbiaceae Euphorbiaceae, the spurge family, is a large family of flowering plants. In English, they are also commonly called euphorbias, which is also the name of a genus in the family. Most spurges, such as '' Euphorbia paralias'', are herbs, but some, ...

first described as a genus in 1919. It is native to northeastern

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 ...

( Guyana and S

Venezuela Venezuela (; ), officially the Bolivarian Republic of Venezuela ( es, link=no, República Bolivariana de Venezuela), is a country on the northern coast of South America, consisting of a continental landmass and many islands and islets in ...

).Kew World Checklist of Selected Plant Families
/ref>Hokche, O., Berry, P.E. & Huber, O. (eds.) (2008). Nuevo Catálogo de la Flora Vascular de Venezuela: 1-859. Fundación Instituto Botánico de Venezuela. ;Species # '' Haematostemon coriaceus'' (Baill.) Pax & K.Hoffm. - Amazonas State in S

# '' Haematostemon guianensis'' Sandwith -

Potaro-Siparuni Potaro-Siparuni (Region 8) is a region of Guyana. Venezuela claims the majority of the Region located west of the Essequibo River as part of Guayana Esequiba. It borders the region of Cuyuni-Mazaruni to the north, the regions of Upper Demera ...

region of Guyana

References

Plukenetieae Flora of South America Euphorbiaceae genera {{Euphorbiaceae-stub