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Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Rosids
Order: Malpighiales
Family: Euphorbiaceae
Subfamily: Acalyphoideae
Tribe: Acalypheae
Subtribe: Lasiococcinae
Genus: Clonostylis
Species: C. forbesii
Binomial name
Clonostylis forbesii

Clonostylis is a monotypic genus of flowering plant in the family Euphorbiaceae. The sole species is Clonostylis forbesii is a flowering tree found in Sumatra. It has small glabrous leaves with an elliptic shape, arranged spirally.


It was previously thought that Clonostylis S.Moore was a synonym of Spathiostemon Blume, but now Clonostylis is provisionally treated as a monotypic genus.

Since only one specimen has been found, according to the Nationaal Herbarium Nederland, and it did not exhibit fruit or staminate flowers, a more definite classification is not yet possible. (The species is unisexual, and the specimen in question had only pistillate flowers.)[1]


  1. ^ Welzen, P.C. (1998). "Malesian Euphorbiaceae Descriptions: 32. Clonostylis". Nationaal Herbarium Nederland. Retrieved 26 May 2013. 
  • Welzen, P.C. van. 1998. Revisions and phylogenies of Malesian Euphorbiaceae: Subtribe Lasiococcinae (Homonoia, Lasiococca, Spathiostemon) and Clonostylis, Ricinus, and Wetria. Blumea 43: 131–164.