Veins. The ultimate branches or divisions of the vascular system, as in leaves or 



petals. 

 Velum. A veil; a membranous indusium, as in Isoetes (fig. 7). 

 Velutinous. Having pubescence which is velvety in texture (fig. 785). 

 Venation. The pattern of the veins in an organ. 

 Venous. Characterized by having more or less conspicuous veins. 

 Venter. Under part. 



Ventral. Pertaining to the under (or front) side of a structure. See Adaxial. 

 Ventricose. Swelling unequally or inflated on one side. 

 Vernal. Occurring in springtime; said of pools that contain water in spring and 



are dry in summer. 

 Vernation. The arrangement of leaves in the bud. 

 Verrucose. Having wartlike nodules on the surface. 

 Versatile. Turning freely on its support, as an anther attached crosswise at its 



mid-point to the apex of the filament. 

 Verticil. A ring of organs or flowers at a node; a whorl. 

 Verticillate. Occuring in verticils (fig. 788). 

 Vespertine. Blossoming in the evening. 

 Vestiture. That which covers the surface, as hair, scales, etc. 

 Villous. Densely beset with shaggy hairs. 

 Virgate. Long, slender, and straight, like a wand. 

 Viscid. Sticky. 

 Viviparous. Germinating or sprouting from spores or buds while still attached to 



the parent plant. 



Whorl. A ring of leaves, flower parts, or flowers occurring at a single node (fig. 



788). See Verticil. 

 Whorled. Occurring in a whorl (fig. 722). 

 Wing. A thin, flat extension from an angle or margin (fig. 503). 

 Woolly. Densely beset with wavy, curly, or twisted hairs (fig. 753). 



Zygomorphic. Having the members of any whorl unlike; irregular (fig. 354). 



1732 



