The drawing was made in the greenhouse at the nursery 

 of Messrs. Colvill, in the King's Road^ Chelsea; where it 

 flowers freely and abundantly. 



AmcBnUf like vmfiwa, speciosa (Glandulifoua umbel- 

 lata. Wendl. coll. 1. 37. t. 10.), and^agran*, belongs to 

 a group, which Willdenow has detached from Diosma in 

 his " Enumeratio,'' and distinguished from the other three 

 parcels into which he distributes that genus, by an ap- 

 pendage connected by a flexile stalk with the summit of 

 the receptacle of the cells of the fertile anthers, and which 

 while the anther remains entire is upright, but when that 

 bursts bends down close along the back of the anther, 

 and proves an unfailing sign that the pollen has been shed. 

 The same circumstances belong to the species that Will- 

 denow leaves for the true group, under the title Diosma, 

 but these appendages being there minute and inconspi- 

 cuous, seem to have escaped his eye. In Adbnandba the 



filaments are more intimately connected with the recepta- 

 cular crown than in Diosma. 



Amoma may be known from all others of its section, 

 with which we are acquainted, by sessile flowers orbicular 

 imbricate petals and oval foliage. The flower is smaller 

 than either in umjlora or speciosa, and about the size of that 

 of Jragrans (Curtis's magaz. 1519) which is however long- 

 peduncled and red throughout. 



Mr. Brown observes, that Ruta and Peganum may be 

 annexed to Diosmece, but that neither genus being calcu- 

 lated to aflbrd a clear idea of the order, from the general 

 structure of which they deviate in some important points, 

 he has derived the ordinal title from Diosma, as the most ex- 

 tensive and best-known genus of the division, and proposes 

 to detach the first section of Jussieu's Rutacece. as the 

 foundation of another order, to be called Zygophyllece, 



Diosma is a South African genus. 



In our view the Barosma, Agathosma, and Adenandra, 

 serve better for sections of Diosma than separate genera. 

 This is however entirely matter of taste. 



