MONOCOTYLEDONES 



223 



Flowers monoecious. 

 Flowers on a spadix. 



Spadix thick. Spathe absent 



Spathe present i 



Flowers not on a spadix. 

 Flowers capitate. Stamens 2 — 5 . 

 Flowers 2 in a spathe, 1 ^ , 1 Q 

 Flowers in two rows on one side of 

 the spathe, enclosed by a fold of the 

 leaf ," or solitary .... 

 2. Floral envelopes imbricated, bract-like. 

 Leaves with entire sheaths, stems solid 

 Leaves with split sheaths, stems hollow 



Typhacece. 

 Aroidacece 



JEriocaulacecB. 

 Lemnacece. - 



Naiadacece. 



Cyperacece. 

 Gra^ninacece. 



