Veins. Threads of fibro-vascular tissue in a leaf, petal, or other 



flat organ. 



Villa se or Villous. Covered with long, soft hairs. 

 Viscid. Glutinous; sticky. 



Whorl. An arrangement of leaves or branches in a circle round 



an axis. 

 Wood. The hard part of a stem lying between the pith and the 



bark. 

 Woolly. Covered with long and matted or tangled hairs. 



240 



