CI. 5.] aristolochi^:. 85 



superior, either entire or divided, the segments in a 

 simple or double row, the inner ones (Corolla Linn.) 

 petal-like. Stamens definite or indefinite, inserted 

 upon the Pistil," (that is above the germen). " Ger- 

 men simple. Style either simple, or definitely mul- 

 tiplied, or wanting. Stigma simple or divided. 

 Fruit of one or many cells. Plants herbaceous and 

 aquatic." 



Jussieu's genera are Valisneria, Stratiotes, Hydro- 

 charis, fig. 156, Nymphcea, Nelumbium, Trapa, 

 Proserpinaea and Pistia. The author confesses his 

 dissatisfaction respecting the last five genera, and not 

 without reason. Mr. Salisbury, in Sims and Konig's 

 Annals of Bot. v. 2. 69, first I believe showed Nym- 

 phcEa and it's allies, amongst which are my Nuphar 

 and Cyamus, (the latter Jussieu's Nelumbium,) to be 

 dicotyledonous, and therefore they can have no place 

 here?; see Ord. 62. Trapa is well explained by 

 Gaertner, as having two, though very unequal, Co- 

 tyledons. Proserpinaea has two very distinct equal 

 ones. 



Class 5. Dicotyledones, without Petals, and 

 with epigynous sl'amens (97). 



" Calyx superior, of one leaf. Corolla none. Stamens 

 definite. Styles either wanting, or single, or defi- 

 nitely numerous." 



Ord. 23. Akistolochije. The only Order. 

 " Stigma divided. Fruit of many cells, with nume- 

 rous Seeds." 



