GLOSSARY OF SPECIAL TERMS. 



561 



Vascular. Relating to ducts or ves- 

 sels. 

 Vein. One of the branches of the 



woody portion of leaves or other 



organs. 

 Veinlet. A branch of a vein. 

 Velum. A fold of the inner side of 



the leaf -base in Isoetes. 

 Velutinous. Velvety; with dense fine 



pubescence. 

 Venation. The arrangement of veins. 

 Ventral. Pertaining to the lower or 



inner side. 

 Vernation. The arrangement of leaves 



in the bud. 

 Verrucose. AVarty or wart-like. 

 Versatile. An anther attached at or 



near its middle to the filament. 



Verticil. See Whorl. 



Verticillate. With three or more 

 leaves or branches at a node ; 

 whorled. 



Vesicle. A small bladder-like struc- 

 ture. 



Vestigial. In the nature of a vestige 

 or remnant. 



Villous. With long soft hairs, not 

 matted together. 



Virgate. Wand-like. 



Wliorl. A group of three similar or- 

 gans or more, radiating from a 

 node; Verticil. 



Whorled. See Verticillate. 



Winged. With a thin expansion or 

 expansions. 



