GROSS ANATOMY OF THE ANQIOSPEBMS. 303 



1. Pedicellate. 



(a) On an elongated axis ; pedicels about equal — 



e.g., Mignonette Raceme. 



(6) On a shorter axis ; lower pedicels longer — e.g., 



Hawthorn Corymb. 



(c) On a very short axis ; pedicels about equal — 



e.g., Cherry TJmbbl. 



2. Sessile. 



(a) On an elongated axis — e.g.. Plantain Spike. 



Var. 2. Drooping— e.g.. Poplar Catkin. 



Var. 3. Thick and fleshy — e.g., Indian 



Turnip Spadix. 



(J) On a very short axis — e.g., Clover Head. 



ni. Flowers in compound groups. 

 1. Regular. 



(o) Racemes in a raceme — e.g., Smila- 



cina Compound Racbem. 



(6) Spikes in a spike — e.g., Wheat Compound Spike. 



(c) Umbels in an umbel — e.g., Parsnip. Compound Umbel. 

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

 («) Heads in a spike— e.g.. Blazing Star.. .Heads Spicate. 

 And so on. 



3. Irregular. 



Racemosely or corymbosely compound — e.g., 



Catalpa Panicle. 



Compound forms o'f the panicle itself are common — e.g., panicled 

 heads in many Compositae, panicled spikes in many grasses. 



B. CTMOSE INFLOKESOENCES. 



I. Flowers solitary ; terminal — e.g.. Anem- 

 one quinquefolia SOLITARY Terminal, 



II. Flowers in clusters (Cymes). (Fig. 197.) 



CYMES. 



SCOT! PIOID. 



Fig. 197.— Diagrams of three forms of cymes. 



