(27) 



centj\3 parietal at the margins of the 

 valves. 

 2. Pentacaona. — Caljx 2-seriate. Petals 

 minute. Ovary 1-ovulate. Frnit a 

 utricle. 



D. Corolla 5-peialed. Floral parts superior. 



a. iloivers in a simple umbel, 



1. Panax. — Fruit baccate. 



2. Hydrocotyle. — Petals entire, acute. 

 Akenes laterally compressed. CostfB 

 filiform. 



3. Bowlesia. — Petals obtuse. Akenes ovate, 

 turgid, without cost;x3, pubescent. 



4. Eryngium. — Petals erect, connivent, 

 emarginate at their apex. Akenes terete, 

 obovate, without costa3 but squamate 

 and tuberculate. 



5. Saiiicula. Petals erect, connivent, emar- 

 ginate at their apex. Akenes spinose. 



6. Panax. Fruit baccate. 



b. Floivers in a compound umbel, 



aa. Endosperm not excavated on its ver- 

 trcd surface (Orthospermce). Costce o, 

 filiform; secondary costce 0. Akene 

 Icdercdly compressed. 



aaa. Petcds entire. 



1. A])ium. -Petals stellate, rounded, with 

 involute apex. 



