EUPHORBIAOEJE. 121 



Adenophcedra, from tropical America, are species of Bernardia with 

 from 3-6 stamens inserted upon a non -glandular receptacle, and liav- 

 ing anthers surmounted witli a large gland. Acidoton, a slirub from 

 Jamaica, lias almost the same characters as Bernardia ; but the in- 

 sertion of the style is central, and the conical receptacle of the male 

 flowers thickens into a glandular tissue between and outside the 

 stamens. Cleidion, belonging to the warm regions of the Old 

 World, except two American species, has also valvate_ sepals in the 

 male flowers, the female ones being imbricated. The stamens are 

 very exactly grouped in vertical series which are alternate and 

 strictly imbricated ; the style has two or three large bifurcate 

 branches. Midospermum, formed of trees from China, Malaysia, and 

 Borneo, has a gamosepalous dentate calyx, imbricated when up- 

 right, and a variable number of stamens (from 6-10) disposed in 

 two verticils, with peltate anthers 3-4-valved. The bilocular ovary 

 is succeeded by an indehiscent monospermous fruit. Urismanthus^ 

 a shrub from Penang, has apetalous flowers, an imbricated calyx, 

 oblique in the male flowers, from eight to fifteen stamens, introrse 

 anthers, and a three-celled ovary. In Bitta myricoides^ from Cuba, 

 imperfectly known and doubtfully placed beside the precediug genus, 

 the calyx of the female flowers disappears and the subdrupaceous 

 fruit is borne upon a pedicel, with some entire or palmipartite bracts. 



Adriana cannot be separated from the preceding types. It- is 

 Australian and consists of frutescent plants with opposite or alter- 

 nate leaves, a valvate calyx in the male flowers, an imbricated one 

 in the female withotit corolla and without disk, central stamens inde- 

 finite in number, and a three-shelled capsular fruit. Neohoutonia 

 africana, placed beside it, has the same floral organisation, with a 

 disk well developed in both sexes. In Trewia, consisting of Asiatic 

 trees with opposite leaves, the 3-4-merous apetalous flowers without 

 disk are also very similar. The suberous indehiscent fruit has three 

 or four cells, each containing an exarillate seed. Lasiocroton macro- 

 phyllus, a Jamaican genus, imperfectly known, is reported to have 

 nearly the same flowers as the preceding, with an hypogynous disk 

 in the female flower only, and a capsular fruit, Pyenocoma^ formed 

 of trees and shrubs from tropical, continental, and insular Africa, 

 are nearly related to Trewia, Echinus, and Adriana. They have large 

 alternate elongated leaves, flowers in long racemes of one or two 



vot,. V, R 



