THE SEEDS. 11 



5. Drupa, a drupe, is a fleshy or pulpy pericarpium, without 

 valve, containing a stone. 



6. Pomum, a pome, is a fleshy or pulpy pericarpium, without 

 valve, containing a capsule. 



7. Bacca, a berry, is a fleshy or pulpy pericarpium, without 

 valve, the seeds within which have no other covering. 



8. Strobilus, a strobile, is a pericarpium formed of an 



amentum*. 



CHAP. VII. 

 OF THE SEEDS. 



THE Seed, according to the definition of Linnaus, " is a de- 

 ciduous part of th,e vegetable, the rudiment of a new one, quick- 

 ened for vegetation by the sprinkling of the pollen." Its di- 

 stinctions are, 



A Seed, properly so called, which is a rudiment of a new ve- 

 getable, furnished with sap, and covered with a bladdery coat 

 or tunic. It consists of, 



1. Corculum, the first principle of the new plant within 

 the seed. 



2. Plumula, a scaly part of the corculum, which ascends. 



3. Rostellum, a plain part of the corculum, which descends. 



4. Cotyledon, a side lobe of the seed, of a porous substance, 

 and perishable. 



* See Chap, II. 



