"^ ( 279 ) 



larged involucre. Prostnite, diffusely dicho- 

 toiiious; leaves opposite. — ©. 



1. P. DRYMAEioiDES Fiscli & Mej. Com- 

 mon. S2)ring. 



Order 3. PIPERALES. Flowers sessile, in 

 dense spikes or racemes, bracteate, without 

 perigonium. Stem articulate. 



Family 1. SAURURE^. 



Ovary central, compound of several follicu- 

 lar carpidia; stigmas several. 



1. Anemopsis Nutt. Yekba maxsa. 



Flowers in a dense, conical spadix, with a 

 several-leaved, persistent, colored involucre; 

 each flower subtended by a colored bract. Sta- 

 mens adnate to the base of the ovary. Ovary 

 immersed into a rachis, 1-celled, with parietal 

 placentae. Fruit a capsule, dehiscent from the 

 apex. Leaves mostly radical, — U- 



1. A. Californica Hook. Bracts and in- 

 volucre white. — San Pablo marshes. Summer. 



Herb and root-stock aromatic. 



Family 2. CERATOPHYLLEiE. 



Monoecious. Involucre 12-cleft; lobes linear, 

 truncate. 5 flowers: anthers oo, sessile. $ 

 flowers: ovary 1-celled, 1-ovulate; style termi- 

 nal; fruit a nutlet, with persistent style and 

 involucre. U- Submersed aquatics; stem ar- 



