The flower here represented was produced in a stove in 
the Garden of the Horticultural Society in May last; but I 
have no doubt that a greenhouse would suit the species 
equally well. 
Nothing is more difficult than to understand the defini- 
tions of the species of Canna in Botanical books, owing to 
the vagueness with which the parts of the corolla are spoken 
of. It should always be borne in mind that a flower of this 
genus consists of four series of organs, each of which ought 
to be defined separately, and which are explained by the 
diagram No. 4. in the accompanying plate. The first row 
represents the calyx, the second the outer limb of the corolla, 
the third the inner limb of the corolla, and the fourth the 
stamens, of which two only are present, both petaloid, and 
one only bearing the anther. If these circumstances were 
attended to, in describing Cannas, the species would be 
distinguished upon much more intelligible differences than 
they now are. 
Fig. 1. is the apex of the style; 2. a transverse section 
of the ovary ; 3. the apex of the petaloid filament, with the 
anther upon one edge. 
