GLOSSARY 



Tufted. In tufts or bunches. 

 Twig. A small branch of a tree or shrub. 



Twining. Ascending by coiling around some support in a spiral 

 manner. 



Umbel. An inflorescence in which the stalk of each flower or 

 cluster of flowers arises from the same place at the end of the 

 stem. 



Unarmed. Without thorns, spines, or prickles. 



Unequal. Not the same in size. 



Unequilateral base. Applied to the base of a leaf in which one side 

 of the blade is longer or larger than the other side. 



Utricle. A fruit with the seed contained in a bladdery membrane 



Variable. Differing from the typical ones. 

 Variegated. Having two or more colors. 

 Vegetable. A plant cultivated for some edible part other than the 



fruit. 

 Vein. A strand of tissue appearing as lines or ridges in the blade 



of a leaf, or in any organ. 

 Vine. A plant which cannot support itself in an upright position 



without the aid of another body; either a climbing or trailing 



plant. 



Wavy. Alternately concave and convex. 



Wedge-shaped. Broad above and narrowed to the base in straight 



lines. 



Weed. A plant which grows where it is not wanted and is trouble- 

 some. 

 Wheel-shaped. Applied to flowers in which the corolla has a very 



short tube and nearly flat spreading lobes. 

 White-woolly. Covered with white wool. 

 Whorl. A set of organs arranged in a circle around the stem, 



especially the leaves when there are three or more in a circle 



and at the same level. 

 Wild plant. One which grows without care or cultivation and is 



native. 

 Wing. One of the side petals in a flower of the Papilionaceae. 



A thin membranous appendage on a seed. Any comparatively 



thin appendage or ridge on an organ. 

 Winged petiole. One in which a narrow blade-like appendage is 



attached to each side. 

 Wool. Long, dense, usually curled hairs. 



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