. PERCENTAGE FREQUENCY 
T т T 
1924] 
HARRIS—THE INFLORFSCENCE OF MANFREDA VIRGINICA 431 
Looking at the matter in a wholly superficial way, one is in- 
clined to suggest, as a basis for the planning of further investiga- 
tion, that the maturation of the more proximal ovaries is not 
favored by the conditions of the inflorescence which are most 
favorable for the development of the terminal portions where the 
floral parts are being matured for anthesis. Тһе failure of the 
more distally placed ovaries to develop to maturity in such large 
numbers as those in the more central region of the inflorescence 
is possibly attributable to the demands for fruit- and seed-forming 
substances made by more proximal ovaries already in an advanced 
stage of development. 
5 
Lodi СФУ Ұлын РЧА РАР с. 
_ NUMBER OF SEEDS PER puni 
E 10 /8 
Fig.6. Percentage frequency distribution of number of seeds per locule. Circles 
= Meramec Highlands, solid dots = Jefferson Barracks. Lower figure represents 
results for 1906, upper figure those for 1907. 
