PRINCIPLES OF CLASSIFICATION. 37 



96. The insertion of the parts of a Flower, or in other 

 words, the situation of the Germen (59), whether 

 inferior or superior, with regard to the rest, next 

 takes the lead in importance in Jussieu's system ; 

 and in the Dicotyledones the absence or presence, 

 the numher or divisions, of the Petals (55), afford 

 even more leading, if not important, distinctions. 



97. The terms used by Jussieu to indicate the above 

 different insertions apply to the Stamens (58). 

 Thus, 



Stamina hypogyna are inferior, inserted beneath the 

 Germen, fig. 14 and 16. 



Stamina epigyna are inserted above it, fig. 11. 



Stamina perigyna are inserted into the integuments 

 of the Flower, which, if simple, is always de- 

 nominated a Calyx (95) by this author, fig. 13 ; 

 if otherwise, the Stamens are borne either by the 

 Calyx, fig. 19, or the Corolla, fig. 8, 9. But 

 such insertion never takes a lead in his system, 

 unless it be into, what he at least considers as, 

 a Calyx. The above terms apply likewise to the 

 Corolla. 



98. Characters derived from proportion, do not en,ter 

 at all into the principles of Jussieu's classification, 

 nor scarcely those founded on number, except so 

 far as whether that of the Stamens or Pistils be de- 

 finite or indefinite. 



99. This System is confessedly incomplete, as there 

 . are numerous, even well-known, Genera (73, 75) 



