Page:An introduction to physiological and systematical botany (1st edition).djvu/428

 398 . Styles, or sessile Stigmas, 9, of which there is hardly an instance.

━━━━━━━━━━━━━━━━━ 10.

━━━━━━━━━━━━ about 12.

━━━━━━━━━━━━━━━━ many.

The 2 Orders of the 14th Class, Didynamia, both natural, are characterized by the fruit, as follows;

1. . Seeds naked, almost universally 4.

2. . Seeds in a capsule, numerous.

The 2 Orders of the 15th Class, Tetradynamia, both very natural, are distinguished by the form of the fruit, thus:

1. . Fruit a Silicula, Pouch, or roundish Pod.

2. . Fruit a Siliqua, or long Pod.

The Orders of the 16th, 17th and 18th Classes, Monadelphia, Diadelphia and Polyadelphia, are founded on the number of the Stamens, that is, on the characters of the first 13 Classes.