64 



TITLES OF THE ORDERS. 



cessary polygamy t when some of tht florets are male, and the rest 

 female ; for in this case, there being no bisexual, the polygamy 

 arising from the composition of the florets of different sexes, is 

 necessary to perfect the fructification. Fifth order, Polygamia 

 segreg ata. The title signifies to be separated? the plants of 

 this order having partial cups growing out of the common calyx 

 which surround and divide the flosculi or fbrets. Sixth order, 

 Monogamia : the title signifies a single marriage,, and is opposed 

 to the polygamia of the four other orders ; for in this, though the 

 antherae are united, which is the essential character of the flow- 

 ers of this class, the flower is simple, and not compounded of 

 many florets, as in the other orders. 



Class 20. Gynandria. — The orders of this class are founded on 

 the number of stamina. The titles have been already explained. 



Class 21. Moncecia. 22. Dicecia. These two classes, whose 

 flowers have no fixed character, but that of not being bisexual, 

 take in the characters of almost every other class ; and the or- 

 ders have accordingly been disposed under the titles of those 

 classes to which their respective flowers would have belonged if 

 the stamina and pistillum had been under the same covers. As 

 the explanation of all these titles has been given in the last chap- 

 ter in the explanation of the classes, it need not be repeated here. 



Class 23. Polygamia. — In this class the titles of the two first 

 orders are the same with the titles of the twenty-first and twenty- 

 second classes, and are to be understood in the same manner; that 

 is, 1. Moncecia, when the polygamy is on the same plant; and 

 2. Dicecia, when it is on distinct plants. The order Tricecia 

 has been established in favour of a single genus, the feus ; in 

 which the polygamy is on three distinct plants, one producing 

 male flowers, another female, and a third bisexual, or andro- 

 gynous. 



Class 24. Cryptogamia. — The orders of this class are, I. Fi- 

 lices, ferns. 2. Musci, mosses. 3. Alg/e, flags ; and 4. Fungi, 



