58 



445. CARPINUS. Barr.fl. in a catkin. Cal. a rounded 

 scale. Cor. none. Statn. 10, or more. 

 Tert.ji. Cal. double ; outer inferior, of several de- 

 ciduous 5c<7/^5y z;?;«^r superior, in 3 deep, sharp 

 segments, permanent. Cor. none. Styles 2. Nut 

 ovate, angular, naked. 



444. BETULA. Barr.f,. in a catkin. Cal, a ternate scale. 

 Cor. none. Stam. 10-12. 

 Fert.Jl, in a catkin, Cal. apellate, 3-lobed, 3-flowered 

 scale. Cor, none. Styles 2. Nut winged, deciduous. 



440. ARUM. Common Cal. a sheathing leaf, enclosing a 

 common stalk, naked above. Cor, none. 



Barr.Jl. Stam, numerous, in a dense ring, sur- 

 mounted by another ring of abortive filaments. 



Fert.Jl, Germ,, numerous, in a dense ring, below the 

 stamens, sessile. Styles none. Stigm. downy. Berry 

 with several seeds. 



Order VII, MONADELPHIA, Filaments 

 united below. 



447. PINUS. Barr.Jl. in a catkin, naked. Stam. nume- 

 rous, on a common stalk. 

 Fert. Jl, in a catkin, of close, rigid, 2-lipped, 2- 

 flowered scales. Seeds 2 to each scale, winged. 



Typha? ' 



MONOECIA MONANDRIA. 

 423. EUPHORBIA. Spurge. 



Linn. Gen. 243. Juss. 385. Fl. Br. 513. Lam. f.4\]. 



Tithymalus. Tuurn. t. 18. Gcertn. t. 107. 



Nat. Ord. Tricoccce, Linn. 38. Euphorhice, Juss. 96. 



Involucrum of 1 leaf, tumid, with 4 or 5 marginal lobes per- 

 manent, containing 12 or more barren Jlowers, intermixed 

 with narrow bristly scales; and 1 ceTitYnl Jertile Jlower ; 

 all stalked, and destitute of calyx, as well as of ccrrolla, 

 Nect, 4 or 5, alternate with the lobes of the Lwolucrum, 



