Monographs Details: Synandropus
Authority: Mori, S. A. 1987. The Lecythidaceae of a lowland Neotropical Forest: La Fumée mountain, French Guiana. Mem. New York Bot. Gard. 44: 1-190.
Scientific Name:Synandropus
Discussion:Type. Synandropus metnbranaceus A. C. Smith. The genus is still known only from one staminate plant collected in 1929 by Killip and Smith {No. 30,217, NY, US!) in swampy jungle at Breves, on the Amazon estuary in Pará, Brazil. Smith recognized Synandropus as related both to Odontocarya and to Somphoxylon (i.e. Odontocarya sens. lat. of this paper), but differing from the first in its trimerous synandrium and fiom the latter in having only three petals, which were thought to represent six petals fused by their edges into three. This interpretation of the petals is probably not correct. In the primitive odontocaryoid perianth the two cycles of stamens stand immediately above the two cycles of petals m such a way that petal and sepal aie exactly opposed The petal of Synandropus occupies the normal position in relation to the opposed stamen if we assume that one cycle of each has been lost. This loss has ccurred in O. tripetala, a species in which various stages of floral reduction can be seen in flowers from the same inflorescence, and the staminate flower of Synandropus is only different from that of O. tripetala in that it has the vertical anther-dehiscence common in Odontocarya. The staminate panicle of Synandropus is tris-racemose and is borne on slender shoots of at least one years growth; its complexity suggests Odontocarya sect. Somphoxylon and its position sect. Diplobotrya. I suspect that it will eventually find a niche in Odontocarya, but think it prudent to await discovery of the endocarp before making any change. In Odontocarya the species will remain unusual because of the toothed leaves thinly pilosulous on the lower face.