54 



PART I. ORGANOGRAPHY. 



(i) The Solitary Indeterminate is one in which the flowers 

 occur singly in the axils of ordinary leaves, as in the common 

 Pimpernel, Fig. 177. 



Fig. 177. 



Fig. 178. 



Fig. 177-^-Pimpernel, showing solitary indeterminate inflorescence. 

 Fig. 178. — Corymb of a species of Cherry. 



(2) The Raceme is a cluster in which the flowers are pedi- 

 celled and occur in succession along a lengthened axis, blossom- 

 ing from the base toward the apex, as in Fig. 176. Examples 

 occur in the Choke-cherry and in 

 the Currant. 



(3) The Corymb is like a 

 raceme, except that it has the 

 rachis proportionately shorter, 

 and the lower pedicels somewhat 

 lengthened so as to bring all the 

 flowers to about the same level, 

 as in Fig. 178, which represents 

 the inflorescence of another spe- 

 cies of Cherry. 



(4) The Umbel resembles a 

 raceme, but has the rachis re- 



, , ,.,, ,, . A y Fig. i7Q.— Umbel of a species of Onion. 



duced stul more than in the 



corymb, and the nearly equal pedicils radiate from it like the 



rays of an umbrella, as in some species of Onion, Fig. 179. 



(5) The Spike is like a raceme, except that the flowers are 



