Recent Observations on Amphicarpza 
Monoica. 
By ADELINE FRANCES SCHIVELY, Pu. D. 
Honorary2Fellow in Botany. 
HE results of certain experiments had not been deter- 
mined, when my paper published in the last number 
of the “ Botanical Contributions of the University of 
Pennsylvania’? went to press. In order that the observa- 
tions now to be discussed may be clearly presented, certain 
allusions to statements in the paper mentioned above will be 
found necessary. 
A. monoica bears above ground, during August, racemes of 
purple flowers, whose productiveness is quite variable ; but in 
most seasons a fair number of legumes may be gathered. 
These legumes are lanceolate or falcate in shape, and contain 
rarely two, usually three, seeds, which when ripe are grayish- 
green, flecked with purple. When immature, the legumes 
are green; later they become brown, and dehisce in the usual 
manner. The dorsal and ventral sutures are quite prominent, 
and are markedly hairy. The walls of the legume are not in 
close contact with the seeds; upon the outer surface of the 
walls a few scattered hairs occur. 
In September, aerial greenish cleistogamic flowers appear, 
and by October have produced legumes differing in shape 
from those already described; the number of seeds varies 
from one to three; but the color of the seeds and the general 
features of the legume are similar to those resulting from 
purple flowers. 
During the entire season, subterranean flowers are con- 
stantly developing. The legumes here produced are pyri- 
form, and typically contain but one seed, which occupies the 
, entire space. When immature, the legume walls are white, 
20 
