DISEASES IN PLANTS. | 359 | 
taay only be of some importance to him, if they 
ellucidate any points in Physiology. Florists value 
them, more especially amateurs, for they have ac- 
quired so unnatural a taste, as to despise nature in 
its simplicity, and with care often transplant these 
deformities into their gardens. . 
‘The deformities in flowers are the following :-—— 
Flos multiplicatus, a double flower; Flos plenus, a 
full flower; Flos difformis, a deformed flower; and 
lastly, Flos prolifer, a proliferous flower. 
§ 384 
Flos multiplicatus, a double flower, is the begin- 
ning of a full flower.. Flowers are styled double, 
when their petals exceed the usual number, but 
stamens and pistil still remain to do their offices 
during impregnation, and to produce ripe seeds. 
The first beginning of a double flower is the corolla 
duplex, or triplex, where the corol becomes double 
or treble. Monopetalous corols are often double, 
for instance, Datura; Campanula; but polypetalows 
corols still more frequently. As long as the pistil 
yemains periect in a flower, and it can bear seeds, so 
long the flower is called double. The cause of this 
deformity is the same ds.in the following. Very 
little care is taken to remedy this evil, as gardeners, 
even like to see full and double flowers. But if 
botanists wish to see double flowers of herba- 
ceous plants restored to their natural and former 
state, they ought by all means to give thent by de- 
grees worse and worse soil. 3 
L 4 4935, 
