1897 | THE PHALLOIDEZA: OF THE UNITED STATES gi 
After leti 
Fees | 
= 
26 44 
26 26 
Average, - 27.1 Average, - 32.3 
28 
Longitudinal wall 44 x 40 (42) 
in interior of stipe 28 
wall at a point mid- 36 x 28 (32) 
way between cross 28 x 26(27) 
walls. 28 x 24 (26) 
Average, - 30.7 
24 24 
24 x 20 (22) 28 
Longitudinal wall 24 x 32 (28) Longitudinal wall 28 
in outer surface of 24 x 28 (26) 16cu thick in outer 32 x 36 (34) 
Stipe. 24 x 32 (28) surface of stipe. 28 x 24 (26) 
36 x 20 (28) 32 x 28 (30) 
28 32 x 24 (28) 
20a 20a 
Average, = 25.5 Average, - 272 
In this plant all the measurements of pseudoparenchyma 
from the partially elongated stipe give 28.5 as the average 
length of diameter of the cells in that stage. After completion 
of elongation, the corresponding average length is 31.24. This 
is an increase of 9.5 percent. in length of diameter of the cells of 
pscudoparenchyma during the later stages of elongation. 
Experiment 9 —To determine whether the longitudinal divi- 
sion of these plants into halves, as in Experiments 6-8, results in 
the development of the pseudoparenchyma to an abnormal size. 
The following measurements were made of pseudoparenchyma 
from the receptaculum of a vigorous plant whose elongation was 
normal and was completed before any incision was made into 
the stipe. 
Me B 
28 20 x 32 (26) 
40 40 x 52 (46) 
