SECT. v. GEMS. 1283 



and nucleus ; and if in the coated or scaly bulb, 

 between the coats or scales. In their form they 

 resemble buds, and, in the process of vegetation, are 

 detached from the parent plant and converted into 

 new individuals. 



The caulinary bulb is alway a scaly bulb, resem- Or caull- 

 bling the bud in the structure of its scales and "' 

 evolution of its contained parts ; and differing from 

 it merely in the circumstance of its detaching itself 

 spontaneously from the parent plant, and forming 

 a distinct individual. 



SUBSECTION III. 



The Propago. The Propago, which is a simple 

 gem peculiar to some genera of imperfect plants, 

 and exemplified by Gaertner in the Lichens, consists 

 of a small and pulpy mass forming a granule of no 

 regular shape, sometimes naked, and sometimes 

 covered with an envelope, which is a fine epidermis. 



SUBSECTION TV. 



The Gongylus. The Gongylus, which is also a 

 simple gem peculiar to some genera of imperfect 

 plants, and exemplified by Gaertner in the Fuci, 

 consists of a slightly indurated pulp moulded into 

 a small and globular granule of a firm and solid 

 contexture, and invested with an epidermis. 



