centre parietal at the margins of the 

 valves. 



2. Pentacsena. Calyx 2-seriate. Petals 

 minute. Ovary 1-ovulate. Fruit a 

 utricle. 



D. Corolla 5-petaled. Floral parts superior. - 



a. tloivers in a simple umbel. 



1. Panax. Fruit baccate. 



2. Hydrocotyle. Petals entire, acute. 

 Akenes laterally compressed. Costre 

 filiform. 



3. Bowlesia. Petals obtuse. Akenes ovate, 

 turgid, without costae, pubescent. 



4. Eryngium. Petals erect, connivent, 

 emarginate at their apex. Akenes terete, 

 obovate, without costre but squamate 

 and tuberculate. 



5. Sauicula. Petals erect, connivent, emar- 

 ginate at their apex. Akenes spinose. 



6. Panax. Fruit baccate. 



b. Floicers in a compound umbel. 



aa. Endosperm not excavated on its ver- 

 tral surface (Orthospermce). Costai J, 

 filiform; secondary costal 0. Akene 

 laterally compressed. 



aaa. Petals entire. 



1. Apium. -Petals stellate, rounded, with 

 involute apex. 



