GLOSSOLOGY OF ANGIOSPERMS. 429 



(d) Heads in a raceme e.g., Ambrosia. .Heads Racemose. 



(e) Heads in a spike e.g., Liatris Heads Spicate. 



And so on. 



2. Irregular. 



Racemosely or corymbosely compound 



e.g., Catalpa, Panicle. 



Compound forms of the panicle itself are common e.g., pamaed 

 Jieads in many Composite, panicled spikes in many grasses. 



B. CYMOSE INFLORESCENCE. 



I. Flowers solitary ; terminal e.g., Anemone 



nemorosa Solitary Terminal. 



II. Flowers in clusters (Cymes). 



1. Lateral branches in all parts of the flower 



cluster developed e.g., Cerastium Forked Cyme, or 



Dichasium. 

 (This is the Biparous, and so-called Dichotomous Cyme of authors.) 



2. Some of the lateral branches regularly suppressed. 



(a) The suppression all on one side e.g., 



Hemeroeallis Helicoid Cyme, or 



Bostryx. 

 (6) The suppression alternately on one 



side and the other e.g., Drosera.. .Scorpioid Cyme, or 



Cicinnus. 



(The last two are frequently not distinguished from one another, and 

 are called Monochasia, Uniparous Cymes, or False Racemes.) 



C. MIXED INFLORESCENCE. 



, 1. Cymo-Botryose, in which the primary in- 

 florescence is botryose, while the sec- 

 ondary is cymose, as in Horsechestnut. . . Cymo-Botrys. 



(This is sometimes called a Thyrsus.) 



2. Botryo-Cymose, in which the primary in- 

 florescence is cymose, while the sec- 

 ondary is botryose e.g., in many Com- 

 posites Botry-Cyme. 



Floral Symmetry. The parts of the flower are mostly arranged 

 in whorls, which are distinctly separated from each other (cyclic tioxv. 

 ers) ; in some cases they are arranged in spirals, with, however, a dis- 

 tinct separation of the different groups of organs (hemicyclic flowers) ; 

 in still other cases the arrangement is spiral throughout, with no 

 separation of the groups of organs (acyclic flowers). 



