ORDER PENTANDRIA. 



245 



and Diadelphia two brotherhoods, in allusion to the manner in 

 which the filaments are connected in one or two sets. The 

 orders in these classes are arranged acpording to the number 

 of stamens ; a character which distinguishes the first ten 

 classes : bat no confusion arises from taking the same charac- 

 ter in these classes to distinguish the orders, since in the classes 

 themselves the number of stamens is not reckoned as a mark 

 of distinction. 



In the class Monadelphia we include 

 all such plants as have their filaments 

 united in one set, forming a tube at the 

 bottom of the corolla. - In this union 

 of stamens, this class differs from all 

 the preceding ones ; for in those we 

 found the stamens entirely separate ; 

 in this, you will observe thai the 

 anthers x are separate, although the 

 filaments are joined. We cannot in 

 this class, as in the two preceding ones, 

 point out any prevailing form of the 

 corolla ; the mark of distinction here 

 is hi some cases rather doubtful, the filaments being sometimes 

 broad at their base, and yet, not entirely connected. 



You will recollect that the orders here, depend upon the 

 number of stamens. We have no first order here, for the 

 character o the class is united filaments, and one filament or 

 stamen coulcf ; not possess this requisite of union. 



The Third Order is the first which occurs ; this is called 

 Triandrid, which you know is the name of the third class, and 

 signifies three stamens. But here are three stamens united by 

 their filaments into a tube. -We find in this order a handsome 

 plant, called blue-eyed grass (Sisyrincliium) ; the three fila- 

 ments have the appearance of being but one ; the corolla is 

 tubular and 6 cleft, style 1, capsule 3 celled ; it belongs to the 

 family of sword-leaved plants, Ensatse. This order contains 

 the tamarind. 



Pentandria. 



The Fifth Order, or five stamens, next occurs^ ; this presents 

 us with the passion-flower (Passiflora), a climbing plant, pecu- 

 liar to the warm countries of America. " Its immensely long, 

 and often woody branches, attain the summits of the loftiest 

 trees, or trail upon the ground adorned with perennially green, 

 or falling leaves, sometimes palmate, or lobed like fingers, at 



Monadelphia Orders Order Triandria Passion flower. 



21* 



