THE FLOWER. 
115 
In describing corollas, the terms cruciferous, lili¬ 
aceous, tubular, etc., may now be used in place of 
polypetalous, gamopetalous, regular and irregular, as 
the new terms include these characters, along with 
others, more limited and special. To say, for example, 
that a corolla is cruciferous , is to say that it is poly¬ 
petalous and regular, and also to state the number 
and position of its petals. To say that a corolla is 
strajo-shajped , implies that it is gamopetalous and ir¬ 
regular, while giving its special form. 
EXERCISE XXXV. 
Crowns, Spurs, and Nectaries. 
The Corona, or Crown, is a scale-like structure, 
Figs. 194, 198, on the inner surface of corollas, at the 
summit of the claw, or tube. 
Fig. 194. 
Fig. 195. 
A Spur is a tubular prolongation of a petal or 
sepal. Figs. 195 and 199. 
