106 BOTANICAL GAZETTE. [ May, 
same flowers, but this time in a half discontented fashion, as 
if striving to improve on work that had been already we 
done. Again, on the 26th of the same month, I saw several 
visit the flowers of this plant (one visited most of the flowers 
pollen masses will be found glued to the upper sepal of the 
flower, which is done as follows: The wasp on entering, 
particularly a newly-opened flower, gets the pollinia attached 
to its head when sucking the nectar; but immediately on 
