Flora Malesiana - Series 1, Spermatophyta , Volume 10 - Issue 1 p. 145- 149
The taxonomic position and rank of the only genus Sphenostemon has a chequered history. In the course of time it has, under various names, been attributed to the Aquifoliaceae (by BAILLON, as Sphenostemon, 1875), to the Icacinaceae (as a species of Phlebocalymna, by F. VON MUELLER, 1875), to the Guttiferae (as Nouhuysia, by LAUTERBACH, 1912), and to the Trimeniaceae (by GIBBS, as Idenburgia, 1917). BAILEY & SWAMY (1953) and BAILEY (1956) examined the anatomy and concluded that the genus could not belong to either Guttiferae or Trimeniaceae cq. Monimiaceae, but they gave no clear alternative. When I summarised the complete generic synonymy (1955), I found it likely to retain Sphenostemon in Aquifoliaceae.
|Flora Malesiana - Series 1, Spermatophyta|
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van Steenis, C.G.G.J. (1984). Sphenostemonaceae. Flora Malesiana - Series 1, Spermatophyta, 10(1), 145–149.