into Species and Varieties. It is called the 
Sexual fyftem y becaufe he confiders the Sfa- 
mina analogous to the male organs of gene- 
ration in animals, and the Piftilla to the fe- 
male. He divides the entire vegetable king- 
dom into 24 clafTes, 23 of which are diftin- 
guifhed by the number, or the comparative 
length, or the connection, or the fituation 
of the- Stamina. The 24th clafs compre- 
hends the plants in which the organs of ge- 
neration are invifible. The Orders generally 
depend on the number of Piftllla in the 
flower: fometirnes on other circumftances. 
The Genera are characterized by peculiari- 
ties in the flower; the Species by the leaves 
or flem, and. the Varieties by accidental cir- 
cumftances. 
The fir ft thirteen ClaJ/es and their Orders, 
are denominated from the number of Sta- 
mina and Pejlllla ; thus, Monandria monogynia, 
from fMvos umcus, avi% marltus, and yvni mu- 
lieri that is, one hufband and one wife, the 
flowers of this Clafs containing one Stamen. 
and one Pi/tillum-, and fo of the other thir- 
teen Clafles and their refpeclive Orders j for 
a circumftantial defcription of which, and 
of all the fucceeding ClafTes, I refer you to 
your 
