6 DROSERA ROTUNDIFOLIA. Cuar. L 
part. which alone is capable of movement, consists of a prolon- 
gation of the leaf; the spiral vessels being extended from this 
to the uppermost part. We shall hereafter see that the ter- 
minal tentacles of the divided leaves of Roridula are still in 
an intermediate condition. 
The glands, with the exception of those borne by the extreme 
Fig. 3. 
Drosera rotundifolia.) 
Longitudinal section of a gland; greatly magnified. From Dr, Warming. 
marginal tentacles, are oval. and of nearly uniform size, viz. 
about =45 of an inch in length. Their structure is remarkable 
and their functions complex, for they secrete, absorb, and ~ 
acted on by various stimulants. They consist of an outer layer 
of small polygonal cells, containing purple granular matter or 
fluid, and with the walls thicker than those of the pedicels, 
