pratt ee WP! cats 3 ES 
x 
Se ee 
an en eS 
5 
ae 
111 
Fia. 48, 
a tip of stem of Atragene 
Alpina; 6b skeleton of 
the same obtained by 
maceration. 6 an inter- 
node consisting of six 
bundles as seen in the 
cross-section, c. h the 
young bud with the leaf 
sheaths. g shows the 
cross-section through 
stem and leaf petiole at 
the point marked g on 
the skeleton figure. The 
leaf-traces of each leaf 
are separated into nine 
bundles. At f three 
simple leaf-traces are 
enclosed in the tissue of 
the stem, but still re- 
main outside the circle 
of bundles. At e and d 
they enter into this circle 
and are fused with it. 
