226 GLOSSAKY 



Umbellet. A secondary umbel. 



Undulate. Having wavy margins. 



Uni-. In composition, one. 



Utricle. A one-seeded fruit with a loose pericarp. 



Valvate. Opening by valves ; meeting by the edges without overlapping. 



Vein. A prominent leaf vein. 



Veins. The main frame- work of a leaf or other organ. 



Veinlet. A small vein. 



Velum. The fold on the inner side at the base of the leaf in Isoetes. 



Velutinous. Velvety. 



Ventral. Relating to the inner or front surface. 



Ventricose. Swollen on one side. 



Venation. The arrangement of veins. 



Vernation. The arrangement of leaves. 



Versatile. Applied to an anther attached near the middle and free at the 



ends. 



Verticillate. Whorled. 

 Villous. Bearing long, soft, loose hairs. 

 Virgate. Long and slender. 

 Viscid. Glutinous; sticky. 



Whorl. An arrangement of organs in a circle. 



Wing. A thin expansion of an organ ; the lateral petal in Leguminosae. 



Woolly. Clothed with long matted hairs. 



