DESCRIPTIVE NOMENCLATURE. 243 



PAGE 



besides these, it has, when largely developed, a 

 permanent form : namely, 



IV. THE TRUNK. A non-advancing mass of collect- 

 ed stem, arrested at a given height from the 

 ground 139 



The stems of annual plants are either leafy, as of a 

 thistle, or hare, sustaining the flower or flower-cluster at 

 a certain height above the ground. Receiving therefore 

 these following names : 



V. THE VIRGA. The leafy stem of an annual plant, 



not a grass, yet growing upright 147 



YI. THE VIRGULA. The leafless flower-stem of an 

 annual plant, not a grass, as of a primrose or 

 dandelion 147 



VII. THE FILUM. The running stem of a creeping 

 plant 



It is not specified in the text for use ; but will be neces- 

 sary ; so also, perhaps, the Stelechos, or stalk proper (26), 

 the branched stem of an annual plant, not a grass ; one 

 cannot well talk of the Virga of hemlock. The ' Stolon ' 

 is explained in its classical sense at page 158, but I be- 

 lieve botanists use it otherwise. I shall have occasion 

 to refer to, and complete its explanation, in speaking of 

 bulbous plants, 



VIII. THE CAUDEX.- The essentially ligneous and 

 compact part of a stem 149 



This equivocal word is not specified for use in the text, 



