Structure, etc., of Epiphegus Virgintana. 357 
intermediate forms. In a very few cases chasmogamic and 
cleistogamic flowers were mixed in the same area of axis. 
In order to get an idea of the rate of development and 
number of chasmogamic flowers appearing, specimens 
selected at random were studied closely. The method con- 
sisted in noting the number of axes of inflorescence. The 
number of chasmogamic flowers was counted, also the num- 
ber of buds beyond these flowers. The buds included in 
this last series were never those which would evidently soon 
expand into chasmogamic flowers. 
With some of the specimens further details were recorded. 
At the apex a red cord was tied and the plant allowed to 
develop. This marking was done on September 12 and 
plants were examined for final record during the first week 
in October. No axis showed at this time an addition to the 
number of chasmogamic flowers, but the number of cleisto- 
gamic buds was often greatly increased. 
On the whole the percentage of chasmogamic flowers 
was much greater than was anticipated when the counting 
was begun. The accompanying table will give a fair idea 
of the observations. Records of many more than those 
given in Table I were made. One not included in this, 
because of space required, deserves a special reference. It 
was a quite tall inflorescence of twenty-seven axes; it bore 
one hundred and three chasmogamic flowers, most of which 
were found on eight axes, the other axes showing none. 
The exact number of cleistogamic was not ascertained, but 
was very large. 
