BOTANICAL TERMS. 137 



SYNONYMES. Names, which have the same meaning, or mean 



the same Plant. 



TERN ATE. Three in one parcel, or on one axis, PL II. 14 t. 

 TENDRIL. A twisting, threadlike process, from a stem, or 



the end of a petiole ; by which some plants cling to others 



for support : the nerves of a leaf without the Lamina. 



PI. II. 18 t. 



TESTA. The skin of a seed. 

 TETRA. Four. 

 TETRAD YNAMOUS. Having 6 petals of which 4 are shorter, 



and stand in pairs. 

 TISSUE. The material out of which the elementary organs of 



plants are constructed. 

 UMBEL. Where many flowers on stalks radiate from the 



same point : like the Parsleys, Carrots, &c. 

 UNCINATE. Hooked. 

 Valvate. United by their margins, like the valves of a 



Capsule. 

 VALVES. The doors of a part which opens; as of anthers 



and seed-vessels : each part is called a valve. 

 VERNATION. The manner in which leaves are arranged in 



the leaf bud. 

 VERTICILATE. When several pieces (leaves, sepals or petals) 



form a ring or whorl round a stem, 

 VENATION. The arrangement of veins in a leaf. 

 VERSATILE Swinging freely, as the anthers of grasses. 

 WHORL. A ring of organs, on the same plane. 

 Winged. Furnished with any kind of membranous or thin 



expansion. PI. II. 7 S. 



