200 Jt'SSIEU S NATURAL SYSTEM. 



from the number of petals, and finally from the situation 

 or place of insertion of the stamens, calyx or corolla, 

 and petals. 



These classes" we shall regularly explain upon the authority fur- 

 nished by Jussieu ; but of the hundred and forty-one orders by which 

 they are composed, we can only state the family or genus upon 

 which they appear to have been founded. 



4. From a consideration of the situation of the sta- 

 mens with respect to the pistil, the stamens are said to 

 be hypogynous or inferior, perygynous, and epigynous or 

 superior. 



Hypogynous when they are inserted into the receptacle, or below 

 the germen ; perygynous, when situated around the germen, and in- 

 serted into either the corolla or calyx, the germen being superior; 

 and epigynous, when inserted above the germen. 



5. The other points of distinction connected with the 

 calyx, corolla, and petals, are similarly expressed ; as 

 epicalyciee, epicorollea, epipetalee, and so on. 



I. ACOTYLEDONOUS PLANTS. 



SEEDS WITHOUT COTYLEDON'S. 



6. This division is constituted by those plants which 

 are supposed to have seeds with no lobes or cotyledons ; 

 or in other terms, the plants which compose it, produce 

 such minute seeds, that the cotyledons are not to be de- 

 tected with any degree of certainty. There is but one 

 class in the division. 



