34 VARIETIES OF CYMES [CH. 



also Erythrcea. In Labiatse we find a shortened Dichasium 

 in each opposite leaf-axil ( Verticill aster). 



If, instead of two lateral axes, three or more arise 

 from the primary axis, we have the Polychasium, a form 

 of inflorescence so like the umbel in configuration that it 

 is often termed an umbellate cyme (Figs. 10 and 13). 



When the various laterals do not arise from the same 

 level on the primary axis, but are of such lengths as to 

 bring all the flowers to about equal heights, we have the 

 corymboid cyme, e.g. Laurustinus, Cornel, Hydrangea, &c. 



In other cases we find the secondary axes shortened 

 and the cyme becomes a Fascicle, e.g. Sweet William ; 

 or the secondary axes may be even done away with, and 

 the flowers sessile in a capitulum-like inflorescence, only 

 distinguishable from the true capitulum by the centrifugal 

 order of opening of the flowers ; such a Glomerulus occurs 

 in the Box, Nettle, &c. 



Examples of condensed dichasial cymes are afforded 



% 



Birch Alder Hornbeam 



Chestnut Beech Oak, 



in which the small dichasium in the axil of each scale of 

 the catkin is reduced to three, or two flowers, or even to 

 one only, and its nature can only be discovered by a close 

 examination of the bracts. 



Examples of condensed cymes are also seen in 



Holly Rhamnus Elms 



Lonicera Box Mistletoe, 



where the more or less tufted fascicles or glomerules are 

 shown to be cymose in development. 



That cymes of the dichasial type described above 

 only differ in degree from those with an apparently single 

 false axis (Monochasium) can be easily demonstrated. 



