Names of the Linnï¾µan classes

988. The names of the Linnï¾µan classes and orders are, as far as practicable, expressive of some common character belonging to all the plants which compose them, and consist only of one word for the class, and another for the order, both compounded from the Greek. There are exceptions, however, to the first rule in several of the classes of the sexual system, as in Icosandria, Mon£'cia, Di£'cia, which contain plants that have not the circumstances expressed in the title.