TO BOTANY. 7 



from the Ammannia, Isnarda, Peplis, Ruellia, and 

 Campanula, in all which the Corolla is often found 

 wanting, but not the Calyx. 



That the Calyx, as proceeding from the Cortex of 

 the plant, is coarser and thicker than the Corolla, 

 which is produced by the soft, pliant, coloured Liber, 

 is obvious to every one. But there are no limits 

 determinable from any such circumstances, unless it 

 be from the colour ; and even this is not sufficient ; 

 for the perianthium of the Bartsia is blood-coloured ; 

 and there are also many flowers whose Corollae are 

 coloured, naked, and subject to lose their petals when 

 in the state of flowering, but which afterwards harden 

 and turn green, and remain on the plant like a Ca- 

 lyx ; as for instance, the Helleborus and Ornitho- 

 galum. 



The Euphorbia has deceived many, who have de- 

 scribed it as monopetalous, taking the Calyx for the 

 Corolla. But that the Pdtae, as they are called, upon 

 the leaves of the Lichen, are really the petals of the 

 flower, is proved by some annual species in India, in 

 which there are white petals very distinguishable. 



CHAP. IV. 



OF THE STAMINA. 



THE STAMINA are the male part of the flower. 

 Linnaeus defines them as an entrail of the plant, de- 

 signed for the preparation of the pollen ; of which 

 we shall speak presently. 



Each single Stamen consists of two parts, viz. 



1. FILAMENTUM, the filament or thread; which 

 serves to elevate the anthera, or summit, and at the 

 same time connects it with the flower. 



2. ANTHERA, the summit itself; which contains 



A4 



