51 
I Class XVI. MONADELPHIA, from f^ovor, MONOS, 
and a^iA^o?, adelphos, a brother. 
Class XVII. Diadelphia, from S^r, dis, ^a'O, and 
jt^eA?)or, adelphos, d brother, 
ff: % 
|. Class XVIII. POLYADELPHIA, frOlU TioKust POLUS, 
nany^ and.«^£x^os:, adelphos, a brother, 
J Class XIX. Syngenesia, from o-^v, sun, t&gether^ 
,nd y^vsais, genesis, generation. 
Class XX. Gynandrta, is from yt^v*), the female, 
lOst conspicuous here, and av-nf, the male. 
^ Class XVI. MoNADELPHiA, contains the natural 
Wer, the column-bearing plants {colamniferce), 
rom the receptacle standing up in the centre of the 
ower like a column, encompassed by the webbed, or 
nited, filaments, forming one body. 
,j In this class the filaments are all united together at 
|.he bottom, but separate at top. 
li 
The petals are truly a continuation of the cylindrical 
leath, formed by the united filaments, which encloses 
le styles and germens as it descends, and which after- 
j-ards spreads out into petals. 
t 
. Class XVII. Diadelphia, contains the papiliona- 
5©us flowers [papilmiacke), a truly natural tribe, a 
"ame derived from papilio, a butterfly, which this flower 
" supposed to resemble. It has four irregular petals, 
le upright one is called the banner, the side ones, the 
I 
