158 
ORGANOGRAPHY. 
BOOK I. 
short and corymbose, with a centrifugal expansion indicated 
by the presence of a solitary flower seated in the axils of the 
dichotomous ramifications, and a”conception is formed of what 
is called a cyme. This kind of inflorescence is found in Sam- 
bucus. Viburnum, and other plants ^Jig. 85.). 
If the cyme is reduced to a very few flowers, such a dis- 
position has been called a verticillaster by Hoffmansegg. 
(Verzeichniss z. PJlanz. Cult, ii. 203.) It consitutes the 
normal form of inflorescence in Lamiacem, in which two ver- 
ticil! as tri are situated opposite each other in the axils of 
opposite leaves. By Linnseus, the union of two such verticil- 
lastri was called a verticillus or whorl ; and by others, with 
more accuracy, a verticillus spurius or false whorl. Link terms 
this inflorescence a thyrsula ; but Hoffinansegg’s name seems 
preferable. 
The following tabular view of the differences in in- 
florescences will probably tend to render the above remarks 
more clear : — 
Flowers not placed on stalks, 
arranged upon a lengthened axis, 
which is permanent. Spike, Locusta, Spadix, 
which is deciduous. Catkin, 
arranged upon a depressed axis, Capitulum, Glomerulus, 
Flowers placed on distinct stalks, 
arranged upon a lengthened axis. 
Stalks simple, 
and of equal length. Raceme, 
the lowermost the longest. 
Inflorescence centripetal. Corymb, 
centrifugal. Fascicle, 
Stalks branched. 
Inflorescence lengthened and 
centripetal. Panicle, 
depressed and cen- 
trifugal, Cyme, Verticillaster, 
arranged upon a depressed axis. Umbel, 
It occasionally happens, as in the Vine, that the rachis of 
