THE INFLORESCENCE. 93 
324. The umbel is com- 
pound, when each peduncle _ 
at one point divides into 
many nearly equal pedicels, 
which bear the flowers. 
This is the case in the Car- 
rot (Daucus Carota), Pars- 
nip (Pastinaca sativa), 
Hemlock (Conium macu- 
latum), and the rest of the 
Umbelliferze. : 
325. The peduncles, taken together, form the umbel, or 
universal umbel: the pedicels at the extremity of each pe- 
duncle form what is called a partial umbel. 
326. The tuyrsvus is a panicle in which the peduncles 
are irregularly divided, but sometimes have an umbellate 
form, and the middle branches of which are longer than 
those at the base or summit, as the Lilac ( Syringa vulgaris), 
the Vine (Vitis vinifera). Some consider the vine as a 
raceme, 
327. The Waort (verticillus) is that form of inflores- 
cence in which the flowers are arranged in a ring round the 
stem, as in Common Mare’s tail (Hippuris vulgaris). See 
Fig. 13, page 85. White Dead-nettle (Lamiim album), 
Penny-royal (Mentha pulegium), and many of the Labiate. 
328. The Spaprx is a spike in which the flowers are set 
very close, and enclosed in a spatha, as Wake Robin (Arum 
maculatum), Fig. 20, next page. It is found only in mono- 
cotyledonous plants. ae 
