42 Key to the System of 



201. Leaves broadish ... 202 



Leaves narrow ... ... ... ... 205 



202. Calyces of two forms, one form involucral. 



Herbs or shrubs; leaves flat, often comparatively large j 

 calyx of staminate flowers five-lobed, unchanged in age ; 

 calyx of pistillate flowers bi-lobed, enlarged in age; 

 embryo incompletely annular. Atriplex. 840 



Calyces all of one form ... ... ... ... 203 



203. Fruit very succulent. 



Shrubby rarely herbaceous plants ; leaves flat, often com- 

 paratively large ; calyx constantly five-lobed, unchanged 

 in age ; fruit depressed ; embryo incompletely annular. 



Rhagodia. 854 



Fruit dry 204 



204. Sepals usually five, opaque, upwards almost flat. 



Herbaceous or rarely shrubby plants ; leaves flat, often large ; 

 calyx unchanged in age ; embryo incompletely annular. 



Chenopodium. 857 



Sepals three or one, transparent, upwards dilated and 

 concave. 



Small herbs ; leaves flat, small ; calyx unchanged in age, 

 minute ; stamens three or one ; styles two or one ; embryo 

 incompletely annular. Dysphania. 862 



205. Fruit-bearing calyx provided with appendages ... 206 

 Fruit-bearing calyx devoid of appendages ... ... 208 



206. Fruit-bearing calyx enlarged into five or less narrow 



often spinule-like sometimes minute appendages. 



Herbs or oftener shrubs ; leaves small, almost cylindrical ; 

 embryo incompletely annular. Figure 36. 



(Chenolea.) Bassia. 863 



Fruit-bearing calyx enlarged into five disconnected or 

 connate broad horizontal membranous appendages ... 207 



