(a INDEPENDENCE OR SEPARATION OF ORGANS. 
cleft, as it is constantly in Phlomis biloba, or more 
markedly among the Lobeliacee. 
In the Composite, a similar separation of the petals 
is not infrequent, thus showing frequent transitional 
stages between the labiatifloral and _ tubulifloral 
divisions respectively. The ligulate corollas also may 
often be found in Chrysanthemums, Dahhas, &c., 
more or less deeply divided into their component 
parts. 
A more complete separation occurs not unfrequently 
in Campanula, Rhododendron, Phlox, Fc. Figs. 30 and 
31 illustrate dialysis of the corolla; the first in Correa, 
the second in Campanula. 

Fig. 31.—Dialysis of the corolla in Campanula sp., after De Candolle. 
In the last-named genus, CU. rotundifolia has been 
found with polypetalous flowers in a wild state in 
the mountains of Canton Neufchatel, Switzerland, and 
gave rise to the creation of anew genus. This form 
is now introduced into gardens. 
It must be remembered that in some genera, where 
this separation of the petals has been met with, there 
are species in which a similar isolation occurs normally, 
as in Lhododendron. fk. linearilobum, a Japanese 
species, offers a good illustration of this. 
The following list contains the names of the genera 
