DECANDRIA. 423 



2. Trigynia has only Rheum, the Rhubarb, 

 nearly related to Rumex. 



3. Hexagynia. Butomus umbellatus, Engl 

 Rot. t. 651, a great ornament to our rivers 

 and pools. 



Class 10. Decandria. Stamens 10. 

 Orders 5. 



1. Monogynia. A numerous and fine as- 

 semblage, beginning with a tribe of flowers 

 more or less correctly papilionaceous and 

 leguminous, which differ very materially 

 from the rest of that natural order in hav- 

 ing ten stout, firm, separate stamens. See 

 Cassia, Curt. Mag. L 107, 633, and 

 Sophora, t. 167 ; also Exot. Rot. t. 25— 

 27, and Annals of Rot any, v. 1. 501. 



The Rata, Rue, and its allies, now be- 

 come very numerous, follow. See Tracts 

 on Nat. Hist. 287- Dictamnus, vulgarly 

 called Fraxinella, is one of them. Dionaa 

 muscipula, see p. 174, stands in this arti- 

 ficial order, as do the beautiful Kalmia, 

 Rhododendron, Andromeda, Arbutus and 

 Vyrola, Engl. Rot t. 213, &c. 



