ANALYSIS OF THE ORDERS. 127 



In this way you proceed with any flower that you may 

 have in hand. Practice will soon enable you to classify 

 with readiness and precision. A7id nothing but practice 

 can. 



Series I. PHiEN-OGAMOus or Flowering Plants. 



Plants with flowers, consisting of stamens and pistils; 

 seeds containing an embryo. 



Class I. Dicotyledonous or Exogenous Plants. 



Stem consisting of bark, pith, increasing by annual dep- 

 osition of a new layer between the old wood and the bark. 

 Netted-veined leaves. Floral envelopes in fours or fives. 

 Cotyledons two (sometimes whorled). 



Sub-class I. Angiospermous Exogenous Plants. 

 Ovules in an ovary, fertilized by the action of pollen 

 through the stigma. Two cotyledons. 



Division I. Polypetalous Exogenous Plants. 



Floral envelopes double; both calyx and corolla present. 

 Corolla with petals separated. 



* stamens and petals free from the calyx, hypogenous oi' nearly so. 

 t Stamens more than tivice as many as the petals. 



Leaves opposite entire. 



dotted. Stamens Feparate. Stigma small HTPBRicACEiE. 



dotless. stamens united below. Stigma radiate-pellate Clusiace^. 



alternate. 



Ovaries more than one, each 1-celled. 

 Stems woody. Petals six or more, in two or more rows. 

 Petals imbricated in the bud. 



Anthers 4-celled. Dioecious vines Menispermace^. 



Anthers 2-celled. Flowers perfect Magnoliace.e. 



Petals valvate in the bud. Fruit pulpy. Albumen ru- 

 minated Anonaceje. 



Herbs. Ovaries embedded in the top of the large receptacle Nelumbiace^. 



