PENTAXDRIA.— DIGYNIA. 



199. ULMUS. Cat. campanulate, 4— 5-cleft. Cor. 0. 

 Samara compressed, with a broad membrana- 

 ceous border. 



500. CELTIS. Polygamous. Perfect fl. Cal 

 inferior 5-parted. Cor. 0. Styles thick, divari- 

 cate. Drupe 1 -seeded, Stamwif. Cat. 6-partpd 

 Stam. 6. 



E. UMBELUFER/E. 

 et. Umbels subcapifate. 



201. ERYNGIUM. Flowers capitate. Recept. patea 



ceous. Involucrum many-leaved, subspinous. 

 Pet. rcflexed. 



202. SANICULA. Umb. nearly simple, capitate. In- 



voluc. few-flowered, fl. polygamous. Col. 5 

 parted, persistent. Fruit oblong, solid, not rib 

 bed, armed with uncinate bristles. 



b. Umbels imperfect. Involucrum obsolete or 0. (Leaves 

 confluent with the petiole, subsimple.) 



803. HYDROCOTYLE. Umbel simple. Fruit with 

 the back and commissure narrow, laterally com- 

 pressed, subrotund, 3-ribbod, generally with 

 reticulate veins. 



. 1. mbel perfect. Universal involucrum^ and sometime < 

 the partial wanting. Fruit ovate, solid, 5- 

 costate. [Leaves decompound.) 



204. SISON. Fruit ovate, solid, 5-ribbed on tbe back ; 



intervals convex ; sides contracted ; raphis exca- 

 vated. 



205. CNIDIUM. Involucr. 1 -leaved, or 0. Fruit ovnie. 



solid. Ribs 5, acute, somewhat winged ; interval? 

 -ulcate, striate. 



<l. U ml eh perfect. Involucrum generally wanting. 1 

 corticate, solid or compressed, utricufatc. 



206. SBfYRNIUM. Involucr. few-leaved, or 0. Fruit 



-olid, ovate ; cortex black, 3-ribbed. Side* con- 

 tracted from tbe commissure. Albumen white 

 '"7 CICUTA. Involve, almost wanting. Fruit ovate, 

 solid, 5-ribbed ; intervals prominent. 

 I 



