112 OBJECT LESSONS IN BOTANY. 
stems of herbs. From this word come two adjectives much 
used and quite convenient, viz., cawlescent and acaulescent ; 
the former denoting the presence of stems above-ground, tlie 
latter of only underground stems. Thus the Buttercup is 
caulescent, while the Pitcher-plant is acaulescent ; the Garden 
Violet or Pansy is caulescent, while the wild Blue Violet is 
acaulescent. 
236. Vine, as every one knows, denotes a slender stem, too 
weak to stand alone, and supporting itself by the aid of other 
plants or objects. Some vines are woody, some herbaceous. 
The Hop twines itself around its supporter, turning from 
right to left, as in Fig. 353. The Morning-glory, also, but 
it turns from left to right (Fig. 352). Thirdly, the Grape 
aud Passion-flower (Fig. 351) climb by special organs, the 
tendrils, of wonderful adaptation, showing their Maker’s de- 
sign more truly than if by an audible voice. 
236. Describe the vine. What their three varieties? What is the read- 
mirable in the tendril ? 
