GLOSSARY OF TERMS USED 239 
Tube.—A tubular structure formed by cohesion of parts. 
Tuber.—A thick fleshy underground stem. 
Tumid.—Swollen. 
Umbel.—An inflorescence in which a cluster of stalked flowers 
springs from a common point. 
Undulate.— Wavy. 
Unilateral.—Arranged along one side. 
Unilocular.—Having one loculus or chamber. 
Unisexual.—F lowers with stamens or pistils, not both. 
United.—Not free. 
Utricle.—A bladder-like covering, or envelope, as in sedges. 
Valve.—The parts into which a capsule breaks, or the flap of an 
anther. 
Valvular.—United by the margin only. 
Ventral.—Of sutures, opposed to dorsal. 
Versatile.—Turning freely. 
Vexillum.—The standard in a papilionaceous flower. 
Villous.— With loose, fine hair. 
Vittz.—Narrow, long, oil receptacles. 
Whorl.—A ring of organs ranged about a common axis. 
Wood.—The hard part of the vascular tissue or xylem, with 
tracheids, woody fibre, and parenchyma. 
Zygomorphic.—Flowers symmetrical about one plane only, as 
opposed to actinomorphic—symmetrical about any plane. 
