INFLORESCENCE. 33 



175. The capitulum (E) has sessile flowers on a de- 

 pressed axis, as in Clover, which axis and flowers are 

 sometimes enclosed with a general involucre, as in Cha- 

 momile, when it is called an anthodium (F), (the com- 

 pound flower of Linnaeus.) The outer or large florets of 

 an anthodium being termed the florets of the ring, and 

 the inner or more compact ones, the florets of the disk. 



176. The raceme (G) has stalked flowers on an ex- 

 tended axis, the stalks being simple and all of the same 

 length as in the Currant. 



177. The corymb (H) differs from the raceme only in 

 having the stalks of the lower flowers longer than those 

 of the upper ones, so as to bring them sometimes to the 

 same level. It is seen in the Millfoil. 



178. The panicle (i) has its flower stalks branched 

 and divided, and the axis of inflorescence considerably 

 extended; it may be seen in the Grasses. The thyrsoid 

 panicle is seen in the Lilac where the middle branches 

 are the longest, and the panicle not lax. 



179. The cyme (K) has its flower stalks divided, the 

 primary stalks springing from a depressed centre, but 

 the divisions or pedicels from an extended axis. It is 

 seen in the Elder. 



1 80. The umbel (L) has both its primary and secondary 

 divisions rising from depressed centres ; when only pri- 

 mary ones are present, it is called a simple umbel ; when 

 secondary exist as well, a compound one, and the whole 

 the general umbel. It may be seen in the Hemlock. 



181. The above-mentioned forms of inflorescence are 

 those which are generally met with, the others being 

 merely compound states, or so little modified that their 

 type may be easily distinguished. 



182. To the extended axis of the inflorescence of 

 Grasses (M), the term rachis is applied ; and to their little 

 spikes (N N) of flowers, locustce ; and to the mode of ax- 

 illary inflorescence seen in the dead nettle and similar 

 plants, the term verticillus, or whorl, is given, but the 

 form of inflorescence is essentially cymoid. 



183. The flower, when existing in the state of a bud, 

 is termed alabastrus, and the manner in which it is 



