200 GOEBEL: REGENERATION IN PLANTS 
that we could induce the development of these adventitious shoots 
on leaves as well, which still retain their connection with the plant. 
If the attempt were to prove successful, we should have induced 
experimentally in 4egonia Rex a phenomenon which is normally 
characteristic of two other species of this genus. Systematists 
state that in 4. simuata and &. prolifera both leafy and flow- 
ering shoots develop on the leaf-blade and even from its base, 
Fic. 2. Begonia Rex. 
— 
It was found possible to induce the production of shoots on 
the leaves, as shown in /. 2, although not, it is true, as quickly 
as in Bryophyllum. The method used was the same as in the pre- 
vious instance. All vegetative points that could be found were 
removed. The plants soon began to develop dormant buds that 
had been hidden, and produced adventitious shoots in the axes: 
all these shoots were removed and the process was repeated. 
After about three months, there appeared on the leaves of the 
plants treated in this manner adventitious shoots which developed 
into plants. The shoots came from the bases of the leaf-blades, 
where the large veins join. Here then we have the same phenom- 
enon as in 4ryophyllum: that is the removal of the vegetative 
points of the shoots starts the development. In this case, how- 
