ARRANGEMENT OF FLOWERS ON THE STEM 191 
203. Terminal Flowers; Determinate Inflorescence. — 
The terminal bud of a stem may be a flower-bud. In this 
case the direct growth of the stem is stopped or deter- 
mined by the appearance of the flower; hence such plants 
are said to have a determinate inflorescence. The simplest 
possible case of this kind is that 
in which the stem bears but one 
flower at its summit. 
204. The Cyme. — Very often 
flowers appear from lateral (axil- 
lary) buds, below the terminal 
flower, and thus give rise to a 
flower-cluster called a cyme. 
This may have only three flowers, 
and in that case would look very 
much like a three-flowered 
umbel. But in the raceme, 
corymb, and umbel the order of 
Fig. 137. — Compound Cyme of 
flowering is from below upward, Mouse-Ear Chickweed. 
er ironi the outside of the'clus- © % 2 emma! (oldest) Bower. 
ter inward, because the lowest or the outermost flowers 
are the oldest, while in determinate forms of inflorescence 
the central flower is the oldest, and therefore the order of 
blossoming is from the center outwards. Cymes are very 
commonly compound, like those of the elder and of many 
plants of the pink family, such as the Sweet William and 
the mouse-ear chickweed (Fig. 137). They may also, as 
already mentioned, be panicled, thus making a cluster 
much like Fig. 136, A. 
