Figure of the upper row in No. 15.

The five subsequent Classes are distinguished not by the number of the
males, or stamens, but by their union or adhesion, either by their
anthers, or filaments, or to the female or pistil.

XVI. ONE BROTHERHOOD, _Monadelphia_. Many Stamens united by their
filaments into one company; as in the second Figure below of No. xvi.

XVII. TWO BROTHERHOODS, _Diadelphia_. Many Stamens united by their
filaments into two Companies; as in the uppermost Fig. No. xvii.

XVIII. MANY BROTHERHOODS, _Polyadelphia_. Many Stamens united by their
filaments into three or more companies, as in No. xviii.

XIX. CONFEDERATE MALES, _Syngenesia_. Many Stamens united by their
anthers; as in first and second Figures, No. xix.

XX. FEMININE MALES, _Gynandria_. Many Stamens attached to the pistil.


The next three Classes consist of plants, whose flowers contain but one
of the sexes; or if some of them contain both sexes, there are other
flowers accompanying them of but one sex.

XXI. ONE HOUSE, _Monoecia_. Male flowers and female flowers separate, but
on the same plant.

XXII. TWO HOUSES, _Dioecia_. Male flowers and female flowers separate, on
different plants.