DICOTYLEDONS. EUPHORBiACE.'E. Euphorbia. 205^ 



1. ASARUM. 

 Perianth 3-cleft. Slam. 12, placed upon the ovary. Anthers 



adnate with the middle of the filaments. Capsule 6-celled. 

 1. A. europium, leaves binate reniform obtuse, p. 146. Woods, 



rare. 



ORDER VII. EUPHORBIACELE. Juss. 



Anthers and Pistils in distinct flowers, naked, or with a free 3- 

 or more cleft perianth. Barren Fl. Staml 12. Anthers 

 didymous. Fertile Fl. Ovary 1. Styles 2 3. Stigmas 

 2 3, bipartite or 2-lobed. Capsule elastically splitting into 

 2 3 one- or two-seeded Cocci. Seeds suspended. Embryo 

 in the axis of a fleshy alliwnen. Radicle superior. Cotyle- 

 dons flat. 



Stems herbaceous or woody. Leaves alternate opposite or 

 whoried. 



1. MERCURIALIS. 



Dioecious. Perianth tripartite. Barren Fl. Slam. 9 12. 

 Fertile Fl. Styles 2. 



1. M. annua, steins branched, leaves glabrous, flowers spicato- 

 glomerate. p. 290. Woods. 



2. M. perennis, stem quite simple, leaves rough, flowers upon 

 long footstalks, p. 289. Waste places. 



2. EUPHORBIA. 



Monoecious, rarely furnished with a perianth. Involucre mono- 

 phyllous, calycifbrm, inclosing a number of pedicellated^/foo/ere, 

 of which one is pistilliferous, the rest consisting each of one 

 stamen. 



1. E. Peplus, umbel of 3 forked rays, bracteas ovate and as 

 well as the obovate shortly petiolated leaves entire, nectaries 

 crescent-shaped horned, 'p. 143. Waste places. 



2. E. exigua, umbel of 3 forked rays, bracteas lanceolate and 

 as well as the linear-lanceolate leaves entire. /;. 148. Corn- 

 fields. 



3. E. helinscopia, umbel of 5 forked rays, bracteas obovate 

 and as well as the cuneate leaves serrated, p. 148. Corn- 

 fields. 



4. E. Esula, umbel of many forked rays, bracteas somewhat 

 heart-shaped and as well as the linear obovate leaves entire. 

 p. 148. Woods. 



5. E. CyparissiaS) umbel of many forked rays, bracteas broadly 



