TO BOTANY. 



Aldrovanda also, at the leaves of which there are 

 pot-shaped follicles that are semicircular. 



UTRICLES*, are vessels filled with a secreted li- 

 quor. Thus in Nepenthes, the extremity of the 

 leaves terminates in a thread, and this thread ter- 

 minates in a cylinder, the top of which is closed 

 with a lid that opens on the edge : in Saracenia also, 

 the leaves are hooded almost like those of Ne- 

 penthes, but sessile at the root ; and in Marcgravia, 

 from the centre of the umbel there are vessels pro- 

 duced, which resemble the ringent corolla of the 

 Gaieopsis, but without the under lip. 



CHAP. XX. 

 OF LACTESCENCE. 



LACTESCENCE, milkiness, is when a copious juice 

 flows out on any injury done to the plant. The co? 

 lour of the liquor is either, 



WHITE ; as in Euphorbia, Papaver, Asclepias, 

 Apocynum, Cynanchum, Campanula, Lobelia, Ja- 

 sione, Acer, Selinum, Rhus, Cactus mammillaris, 

 and the semiflosculose flowers of Tournefortf. 



YELLOW ; as in Chelidonium, Bocconia. Sangui- 

 naria, and Cambogia; or, 



RED ; as in Rumex sanguinea. 



* The word signifies a little bottle. 



f Sonchus, Lactuca, &c. These make one of the classes 

 f Tournefert's Inst. R. H. 



