462 
F. L. PICKETT 
and others. This Juel has done quite thoroughly, and in doing so has 
added much to our knowledge of the behavior of the tapetal cells. 
The wide range of plants in which the wandering nuclei have been 
found seems to indicate that much more time may well be spent in 
observation along this line. 
Within the past year the writer (Pickett, 191 5) reported the 
Fig. 2. A section of an anther in which the tapetal cells, T, have almost en- 
tirely separated. X 280. 
occurrence of wandering tapetal nuclei in Arisaema triphyllum (L.) 
Schott. The work of Juel which appeared while the writer's paper 
was in the publisher's hands, has made it seem advisable to go over 
the Arisaema triphyllum material again and make a fuller report. 
At the same time a study of Arisaema Dracontium (L.) Schott. has 
