INTRODUCTORY LESSONS. 



XX111 



Suppose that one of the branches in 

 Fig. 54 had failed to grow. The first 

 flower would then appear to be axil- 

 lary. In the plant represented by 

 Fig. 57, two of each set of three 

 axillary buds usually remain dormant. 

 Their growth would complete a Tri- 

 chotomous Cyme. Fig. 54 represents a 

 Dichotomous Cyme. Imagine the plant 

 shown in Fig. 57 to continue branch- 

 ing, the stem to be shortened so as to 

 bring the flowers close together, and 

 the leaves to become obsolete. A 

 bunch of flowers, having the appear- 

 ance of a one-sided raceme, would be 

 formed. Let the flowers become ses- 

 sile, and we would have a false spike. 

 Such mimic racemes and spikes are 

 usually coiled as shown in Fig. 64. 



The common Auagallis, whose 

 pretty salmon-colored flowers appear in 

 the axils of the opposite leaves (Fig. 58), 

 is an illustration of simple Axillary In- 

 florescence. Imagine the leaves reduced 

 to bracts, and the stem shortened. The 

 fruit, flowers, and buds would then form 

 a Bracteate Raceme. Let the bracts be- 

 come wanting, and we would have a naked 

 or Bractless Raceme, similar to the one 

 shown in Fig. 59. This raceme wants 

 only a slight lengthening of the lower 

 pedicels to become a Corymb. Indeed, it 

 might be called a Corymbose Raceme. 

 Fig. 60 represents a naked raceme, in 

 which only one or two flowers are in 



