365 
longitudinal section through a young plant in the plane of 
the apical cell. Conditions are exactly as in B. simplex. So 
are the root traces, which therefore need not be further con- 
sidered here. 
Fig. 45 shows the region of the apical cell more highly 
magnified. Comparison with Fig. 24 shows the difference 
between the nature of the apical cell in B. simplex and B. ne- 
glectum. The apical cell of the latter resembles quite closely 
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(TJ 
ae 
Les 
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cg 
S® 2 
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KT 
SH 
SE 
Fig. 47. 
the apical cell depicted by Campbell in Danaea (9). This 
relation holds even in details of cell division as Fig. 140 of 
Campbell shows. The transverse section, however, shows a 
close resemblance with a similar section in B. simplex, as a 
comparison between Figs. 48 and 26 demonstrates. 
In the meristematic tissues many cells in B. neglectum show, 
after the usual staining with safranin and vesuvin, black chro- 
matin figures in the nuclei. Fig. 47 depicts some of the diffe- 
Recueil des trav. bot. néerl. Vol. XVIII. 1921. 24 
