MONOCOTYLEBONES 



221 



C. Ovary superior. Leaves net- veined. 



a. Placentas basal 



b. Placentas axile 



c. Placentas i)arietal . 



Boxburghiacece. 



Smilacece. 



PhilesiacecE. 



2. Flowers either naked, or with a whorled scaly Perianth, 

 generally unisexual. 



A. Flowers on a spadix. 



a. Flowers bisexual. 



Embryo cleft ....... 



Embryo solid 



b. Flowers unisexual. 



Embryo solid ....... 



Embryo cleft on one side. 



Flowers with a true spatlie. Fruit bucculent. 



Anthers sessile, or nearly so . 

 Flowers without a true si^athe. Fruit dry. 

 Anthers on long filaments 



B. Flowers not arranged on an evident spadix. 



a. Flowers bisexual. 



Ovary superior ....... 



Ovary inferior ....... 



b. Flowers unisexual. 

 Ovules erect. 



Embryo perfect. 



Seed without albumen .... 



Seed with albumen 



Embryo rudimentary ..... 

 Ovules pendulous. 

 Carpel solitary. 



Seed without albumen. 

 Pollen globose or tubular 



Seed with albumen 



Carpels several, distinct. 



Anthers 2-celled 



Anthers 1-celled ...... 



Carpels several, combined. 

 Anthers 1-celled. 



Stamens 2 — 3 ...... 



Stamen 1 



Anthers 2-celled. Placentas axile. 

 Seeds with rows of hairs 

 Seeds without rows of hairs . 

 Anthers 2-celled. Placentas parietal 



Aroidacece. 

 Pandanacece. 



Pandanacece. 



Aroidacece. 

 Tijjiliacece. 



JuneaginacecB. 

 Hydrocharidacece. 



Naiadacece. 



Pistiacece. 



Triuridacece. 



Naiadacece. 

 Bestiacece. 



Naiadacece. 

 Desvauxiacece, 



Bestiacece. 

 Desvauxiacece. 



Eriovaulacece 



Bestiacece. 



XyridacecB. 



