404 GLOSSARY OF TERMS. 



Tail, an elongated appendage to a seed, f. 152. 



Tapering root, thick and fleshy, tapering downwards, f. 3. 



Tendril, a thread-like organ, serving to attach plants to some support, 



f. 78, 90. 



Terminal, at the end of the stem or branch. 

 Ternate leaf, when three leaflets rest upon a common stalk, f. 75. 

 Tetragonal, with four angles. 



Thorn, an acute appendage, arising from the wood, f. 91. 

 Thread-shaped, elongated, cylindrical, and slender. 

 Three-edged stem, with three sharp angles. 

 Thrice pinnate, divided three times in a pinnate manner, f. 83. 

 Thyrsus, a close panicle of an oval form. 

 Toothed leaves or other parts, having small protuberances on the margin, 



f. 60. 



Triangular leaf, flat, with three angles, f. 42. 

 Trifid, shortly divided into three segments. 

 Trigeminate, thrice paired. 

 Tripartite, deeply divided into three segments. 

 Tripinnate, thrice pinnate. 

 Triternate, thrice ternate. 

 Trunk, the stem of a tree or shrub. 

 Tube, the narrow cylindrical part of the corolla. 

 Tubular, cylindrical and hollow. 

 Tufted leaves, several springing from one point, f. 27. 

 Tumid, bulging out. 

 Turbinate, spherical and depressed. 

 Twining, winding round other bodies, f. 13. 

 Two-edged stem, compressed with two opposite sharp edges. 

 Two-ranked, with leaves or branches spreading in two opposite directions. 



Umbel, flower-stalks of nearly equal length, arising from a common 



centre, f. 89, 102. 



Umbellules, the secondary divisions of an umbel. 

 Undivided, without segments. 

 Undulated, having a waved margin, f. 55. 

 Unequal, some longer than other*. 

 Unilateral, all inclining one way. 

 Veined, with a net-work of prominent vessels, f. 67. 

 Veins, branching vessels. 



Warty, covered with small hard prominences. 



Wedge-shaped, broad at the end and tapering towards the base, f. 29. 

 Wheel-shaped corolla, with a short tube and expanded limb. 

 Whorl, when several flowers encircle the stem, f. 93. 

 Wharled leaves or flowers, growing in a circle round the stem. 

 Wing of a seed, a dilated membranous appendage, f. 153. 

 Wings, the lateral pieces of a papilionaceous corolla, f. 130. 

 Winged stem, with edges extended into leafy borders. 

 Woody, hard and solid. 



Woolly, covered with long, soft, interwoven hairs. 



Wrinkled leaves, when the veins are lighter than the substance between 

 them, so that the latter is puckered. 



