EUPHORBIAOE.f,. U? 



central column, and there are some species of this genus where the 

 number of the verticils and their total number may be the same ; 

 but there are some also where three verticils may be counted, and 

 others where the androceum has only one verticil of three pieces. 

 The perianth too is imbricated and often double, and the leaves are 

 simple, penninerved, alternate or sometimes so nearly approaching 

 each other as to represent verticils. 



Cluytla also forms a small sub-series {Cluytiece). With a- parti- 

 cular habit, they have flowers (fig. 172) with 

 double imbricated perianth. The insertion of auytia puicheiia. 

 the petals is more or less perigynous. The 

 isostemonous androceum is formed of pieces 

 borne upon a central column surmounted by a 

 rudiment of a gynseceum. A double or single 

 disk accompanies it at the base. All the known pj^ j^j. Female flower {\). 

 species of C/w^^m, frutescent or suffiutescent, 



with alternate, siniple, exstipulate leaves, inhabit South Africa or the 

 neighbourhood of the Eed Sea, especially Abyssinia and Arabia. 



In the small group 'Pogonophorece, Pogonophora, consisting of 

 shrubs and trees of tropical America, has a double imbricated 

 hypogynous perianth, with five free alternipelatous stamens, and in 

 the female flower a trilocular ovary, surrounded by a membranous 

 disk. This leaves are simple and alternate. It is the same in Micro- 

 desmis^ a nearly allied genus, a native of tropical Western Africa, 

 where an isostemonous species, and of Eastern India, where a diplo- 

 stemonous species is found, furnished with five oppositipetalous 

 stamens smaller than the other five. All are inserted round a rudi- 

 ment of a central gynseceum, surrounded by an imbricated calyx 

 and an imbricated or contorted corolla. The ovary and the fruit 

 with hard stones have two or three cells. Micrandra is also very 

 nearly related to Pogonophora, but the flowers are apetalous and the 

 isostemonous androceum is ■ formed of stamens alternating with the 

 sepals, whose filaments are, incurved-refracted in the bud. It con- 

 sists of Brazilian trees with alternate leaves. Cunuria, resembling 

 Tannodia, Jatropha, and Micrandra, has the apetalous fiowers of 

 the latter, but with a diplostemonous androceum without any pecu- 

 liar curvation of the filaments. The disk of the female flower is 

 surmounted by six teeth (staminodes ?), and the leaves of the only 

 species known inhabiting North Brazil are alternate, thick, similar to 

 those of many Guttifers. In MiscJiodon, a genus presenting great 



