Sandwithia is a plant genus of the family Euphorbiaceae first described in 1932.Tropicos, Sandwithia Lanj. It is native to northern South America.Kew World Checklist of Selected Plant FamiliesForzza, R. C. 2010. Lista de espécies Flora do Brasil http://floradobrasil.jbrj.gov.br/2010. Jardim Botânico do Rio de Janeiro, Rio de Janeiro It is dioecious. The genus is named in honour of the botanist Noel Yvri Sandwith.
Species Sandwithia guyanensis Lanj. - French Guiana, Guyana, Venezuela, N Brazil Sandwithia heterocalyx Secco - SE Colombia, S Venezuela, N Brazil
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