1 86 TlMEHRI. 
I have now briefly noticed the most striking plants 
with which we met on Roraima ; but before closing this 
paper, there are one or two points which I wish finally to 
set down in order. 
First as to Brocchinia cordylinoides, Baker. This is 
only known to occur on the Kaieteur savannah and on 
Roraima, but in the latter place apparently only above 
a height of 5500 feet. There is, too, a remarkable diff- 
erence of vigour in the habit of the plant at these two 
places respectively. After seeing a large number of 
individuals of the plant at both places it is obvious that 
at the Kaieteur it attains a much greater size and forms 
a much taller stem ; and, if I may judge from the com- 
parative abundance or scarcity of flower stalks it seems 
to flower much more freely at the Kaieteur than on 
Roraima. A possible explanation of some of these fa6ls 
seems to be that the plant belongs to the kind of position 
and the circumstances that it finds on Roraima; that the 
most important of these circumstances of its existence 
is an atmosphere like that of Roraima or the Kaieteur, 
so supersaturated with damp as to effecl the constant 
replenishment of the large quantity of water retained in 
the leaf-axils of the plant ; and that the plant, having 
found its way to the Kaieteur, which though much below 
the proper sea-level is atmospherically so peculiarly 
suited for it that it has taken root there, and in its new 
surroundings of higher temperature has developed a new 
vigour. Lastly, as regards this plant, 1 cannot refrain 
from once more alluding to its possible, even pro- 
bable, distribution in the other widely scattered distin6l 
areas already enumerated. 
Closelv connected with the Brutchiuia is Uiricularia 
