6o 



PART I. ORGANOGRAPHY. 



are often arranged in spikes, as seen in the Peppermint, 

 Fig. 194. 



Mixed panicles are of very common occurrence, in fact more 

 common than the purely indeterminate forms. They may be of 

 two kinds, either the primary ramifications may be indeterminate 

 and the secondary or ultimate ones determinate, or the latter 

 may be indeterminate while the former are determinate. A 

 somewhat elongated, profusely branching and compact cluster of 

 the former sort, like the inflorescence of the Lilac and Horse- 

 chestnut, is commonly called a thyrsus qr thyrse. 



Recapitulation. 



Anthotaxy 



or 



Inflorescence. 



Indeterminate 



Indefinite. 



Determinate 



or 



Cymose. 



Mixed. 



' Solitary. 



Raceme 



Corymb. 



Umbel. 



Spike. 



Catkin or Anient. 



Capitulum or Head. 



Strobile. 



Spadix. 

 { Compound Raceme, Corymb, Umbel, etc. 



f Solitary. 



Cyme (proper). 



Compound Cyme. 

 - Fasicle. 



Glomerule. 



Scorpioid Cyme. 



Verticillaster. 



( Mixed Panicle. 



-? Thyrsus or Thyrse. 



( Spiked Verticillaster, etc. 



Practical Exercises. 



Determine whether the following inflorescences are indeterminate, deter- 

 minate or mixed, and give the particular names applicable to each : The Cur- 

 rant, the Carrot, the Mustard, the Sycamore, the Red-ozier Dogwood, the 

 Willow, the Frost Grape, the Wheat, the Potato, the common Milk-weed, the 

 Hydrangea, the Burdock and the Harebell. 



