xvi INTRODUCTION TO BOTANY. 



(borago;) speedivell, (veronica.) See Plate, 156. Veronica 

 Chamagdrys, 



5. Gaping, (ringent,) an irregular corolla, usually divided 

 into 1. an upper. 2. a lotner lijy : the first sometimes termed, 

 the helmet, (galea;) the second, thcbea7-d, (barba;) the open- 

 ing of the tube is called the t/iroat, (faux :) the prominent swell- 

 ing in the throaty (faux^) is called the palate: the gaping or 

 ringent corolla is exemplified in the class didynamia ; for ex- 

 ample, dead nettle, (lamium.) See Plate, 12.S. 



6. Masqued, (personate,) a corolla closed between the lips 

 by the palate; for example, snap-dragon, (antirrhinum.) See 

 Plate, 124. The lips represented open. 



2. Two-petalled (dipetalous.) 3. Many-petalled (poly- 

 PETALous,) each petal of which is usually furnished with a 

 narrow part, or clax'o, by which it is fixed, and with a harder 

 (lamina) the upper part; for example, the rose, (rosa.) See 

 Plate, 125. a. the calyx; h. the border or lamina. 



The Polypetalous Corolla, is — 



1. Cross-shaped, (cruciform), of four-equal petals, spreading 

 out in form of an equal sided cross; for example, 'voall-Jlo'wer, 

 (cheiranthus,) and stock-gilly-flo'wer, (cheiranthus.) See Plate, 

 126. 



2. Butterfly-shaped, (papiUonaceous,) usually four-petalled, 

 the lower petal is shaped like a boat, and is called the keel, 

 (carina,) the back or upper petal, which spreads and rises 

 upwards, is called the standard or baiiner, (vexillum :) the two 

 side ones stand singly, being separated by the keel, and are 

 called the tmngs, (alee:) when the keel is split, the corolla is 

 properly five-petalled ; for example, the pea. These flowers 

 form a natural class, papilionacese, or leguminosae, the ^^ea- 

 tribe. See Plate, 129. the standard. 130. one of the tvings. 

 131. the keel. 



3. Rosaceous cor. that is, spreading like a rose. See Plate, 

 127. A many-pctalled corolla, with the exception of those 

 forms just mentioned, is named according to the number of 

 petals of which it consists; for example, of six petals, (hexa- 

 petalous,) &c. 



I. The Corolla in shape may be waved, (undulate; for 

 example, the horse-cJiesfnut, (ssculus.) 2. folded, (plicate;) 



