S80 
NATURAL liISTORY. 
flowers of this class six Stamina, four of which are longer than tha 
rest ; which circumstance distinguishes them from those of the sixth 
class, where the six Stamina are equal : but these flowers have 
their particular character also, their Corolla being cruciform. 
CLASS XVI. MONODELPHIA. — The word here compounded 
with the numerical term, signifies a brother. This relation is 
employed to express the union of the filaments of the Stamina, 
which in this class do not stand separate, but join at the base, and 
form one substance, out of which they proceed as from a common 
mother ; and the title of the class expresses a single brotherhood, 
meaning that there is but one set of Stamina so united, which dis- 
tinguishes the class from the two following ones. The number of 
Stamina in this class is not limited: the flowers have their parti- 
culciir clidi*cict6r 
CLASS XVII. DIADELPHIA. — This term expresses a double 
brotherhood, or two sets of Stamina, united in the manner ex- 
plained in the preceding class. The number of the Stamina is not 
limited : the flowers of this class have a very particular cha- 
racter, their Corollas being Papilionaceous, as will be shewn in its 
place. 
CLASS XVIII. POLYADELPHIA. — This term expresses many 
brotherhoods, or sets of Stamina; the flowers have no classic 
character, farther than is expressed in the title. 
CLASS XIX. SYNGENESIA. — Tins class contains the com- 
pound flowers described in Part I. Chap. 19. The title signifies 
congeneration, alluding to the circumstance of the Stamina; in 
which, though the filaments stand separate, yet the Antherse, which 
are the parts more immediately subservient to generation, are 
united in a cylinder, and perform their office together. The 
classic character will be explained in its place. 
CLASS XX. GYNANDllIA. — The term is compounded of two 
words, that signify wife and husband ; and alludes to the singular 
circumstance of this class, in the flowers of which the Stamina 
grow upon the pistillum ; so that the male and female parts are 
united, and do not stand separate, as in other hermaphrodite 
flowers. 
CLASS XXI. MONOECIA. — The word here, compounded 
with the numerical term, signifies a house or habitation. To under- 
stand the application of this title, we must know, that the plants 
of this class are not hermaphrodite, but Androgynous, the flowers 
that have the Stamina wanting the Pistillum, and those that have 
the Pistillum wanting the Stamina. Now the term Monoecia, 
which signifies a single house, alludes to this circumstance ; that in 
this class the male and female flowers are both found on the same 
plant, whereas in the next they have distinct habitations. 
CLASS XXII. DIOEC1A. — This term, which signifies two 
houses, is applied to this class (the plants of which are male and 
female) to express the circumstance of the male flowers being on 
one plant, and the female on another ; the contrary of which is the 
case of the Androgynous class Monoecia, last explained. 
