124 



MANUAL OF BOTANY 



under the name of the drepanium, but there is hardh' any 

 difference between this and the true heliooid cyme. 



Examples of the helicoid cyme may be found in many 

 Boraginacese, as the Forget-me-not (fig. 236) and the Comfrey 

 [fig. 237). 



g. The Scorpioid Cyme. — In this form, instead of the 

 branches being uniformly suppressed upon the same side of the 

 dichasium, the suppression takes place on the two sides alter- 

 nately {fig. 234, C, D). Subsequent growth generally causes 



Fig. 235, Fig. 236. 



u^ 



/''i(j. 236. Instance..; of helicoid cymes t. after Gray). The succe&sive a.xes, //, 

 /(', /(-, &r., ai-o each terminated by a flower, and each arises on the antece- 

 dent axis in the axil of a bract. In tlie figure on the right, both bi*act 

 and secondary a.\is are suppressed continuously on the right-hand side. 

 In the figure on the left, both bracts are represented, and the a.vis which is 



suppressed is indicated by a dotted line. Fiff. 236. Helicoid cyme of 



the Forget-me-not ( MtjosoHs jmli/sfns). 



the sympodium, which is at first zigzag in form, to become 

 straight. The parts of each axis above the insertion of the 

 branch remain weak and are displaced laterally, causing the 

 inflorescence to simulate the raceme, from which, however, it can 

 be distinguished by the position of the bracts, as already described. 



As in the last case, the branches may arise in the plane of the 

 original dichasium, or in one at right angles to it. Eichler dis- 

 tinguishes the former under the name of the rliipidium (fig. 238). 



The scorpioid cyme may simulate the corymb, as in the figure 

 last referred to, where the lengths of the successive axes are such 

 as to bring the flowers to the same height. It can be distin- 



