Szabo. 
The Development of the Flow,, of the Dipsacaceae. 331 
ill 
Text-fig. 3. Theoretical ground-plan of the junction of the vascular bundles of a tetracyclic 
tetramerous epigynous flower. i, the whorl of the involucel; k, the whorl of the calyx ; 
c y the whorl of the corolla; a , the whorl of stamens; g, the whorl of the ovary. The white and 
black discs indicate the situation of the vascular bundles. 
Text-fig. 4. Ground-plan of the flower and the junction of the vascular bundles in the genus 
Cephalaria. 1-6 are ground-plans of the levels indicated in Text-fig. 5 by horizontal double lines 
and by corresponding roman letters ; lettering as in Text-fig. 3. 
vascular bundles has been altered by the fact that the situation of the ovary 
is inferior owing to the reduction of the carpel zone. Text-fig. 4 shows the 
arrangement of bundles in the Cephalariae, in the same way as in Text- 
