4099 
Tuber, a thickened subterranean stem or branch which lies horizontally, 
as a potato, 
furgid, plump, as though distended with water. 
Turion, a scaly shoot from a subterranean bud; sterile vegetative shoot (in 
Rubuse 
Umbel, an inflorescence of which the component branches (rays) are approximately 
| equal, resembling the ribs of an umbrella. Umbellate, in an umbel, 
Umbellet, an umbel of secondary order, 
Uniserial, in a single row, 
Unisexual, used of flowers having either stamens or pistils but not both, 
Utricle, a one-seeded more or less inflated fruit with thin walls. 
Valvate, meeting by the margins but not overlapping. 
Valve, one of the component parts of the wall of a dehiscent fruit, 
Velum, membranous margin of fovea in Isoetes, 
Venose, veins prominent. 
Ventral, pertaining to the lower side; in an axil the side next the main stem, 
Versatile, said of centrally fixed anthers which readily turn upon the filament 
in any direction, 
Verticillate, whorled, 
Villous, with long and soft straight hairs. 
Virgate, straight and slender like a sapling; wand~like, 
Viscid, sticky. 
Whorl, a group of three or more leaves arising at a single node, 
Wing, 2 membranous projection as along an angled stem; the lateral petals of 
certain flowers of the Leguminosae, 
Woolly, clothed with long soft tangled hairs, 
Zygomorphic, applied to flowers which may be divided into two similar halves 
by one plane only, as a sweet peas 
