GROSS ANATOMY OF FLOWERING PLANTS. xxvii 
fication of the floral formula given above, as follows, where the 
members are alternate: 
Gn ~——— 
An 
An — 
Co 
Ca — 
B 
When they are opposite the arrangement is as follows: 
Gu 
Au 
Co 
Ca 
B 
In both these diagrams the position of the parts of the flower 
with respect to the flowering axis is indicated by the position of 
CT 
Fie, XXIII. 
Fie. XXII. 
Fig. XX1II.—Actinomorphic flower of Marsh Marigold (Caltha). 
Fie. XXIII.—Zygomorphie flowers of Figwort (Secrophularia). 
view; 2. Side view of a section from back to front. 
1. In front 
