MONOCOTYLEBONES 



221 



). Ovary superior. Leaves net-veined. 



a. Placentas basal Roxhurghiacece. 



b. Placentas axile . . . Smilacem. 



i;. Placentas parietal . . . Philesiacece. 



2. Flowers eithek naked, or wIth a whobled scaly PebiantHj 

 generally unisexual. 



A. Flowers on a spadix. 



a. Flowers hisexual. 



Embryo cleft .... 

 Embryo solid 



b. Flowers unisexual. 



Embryo solid ....... 



Embryo cleft on one side. 



Flowers with a true si^athe. Fruit yucculent. 



Anthers sessile, or nearly so 

 Flowers without ^ true spathe. Fruit dry.. 

 Anthers on long filaments 



B. Flowers not arranged on an evident spadix. 



tt. Flowers hisexual. 

 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 



Aroiclace(B. 

 Pandanacece. 



Panda7iacece. 



Aroidacecs. 



Ttjphacete. 



Jtincaginacece. 

 MydrocharidacecB. 



Naiadacece. 



PistiacecE. 



Triuridacecs. 



Naiadace<B. 

 Pestiacece. 



Naiadacece. 

 Desvauxiacece. 



PestiacecB. 

 DesvauxLace(S. 



Eriocaulacece 



Pestiacece. 



XyridacecB. 



