X ANALYTIC KEY TO THE FAMILIES 



Calyx of separate sepals Caryophyllacece, p, 40 



Calyx 5-toothed glux, p. 105 



AA. ,Calyx and corolla both present. 

 B. Corolla of separate parts. 



c. Stamens more than twice as many as the sepals. 

 D. CalyTS free from the ovary. 



E. Pistils several or many ; distinct. 



Aquatic herbs witli peltate leaves . Nymphacece, p. 44 

 ' Terrestrial plants. 



Filaments united in a tube . . . Malvacece, p. 89 

 Filaments not united, inserted on the calyx 



Rosacea}, p. 60 

 EE. Pistils forming 1 ovary but may have several styles 

 or stigmas. 

 Ovary 1-celled, simple. > 



Ovules 2 Rosacece, p. 60 



. Ovules many Ranunculacece, p. 44 



Ovary compound. 



Ovary 1-celled. ; 



Sepals 2 ; succulent plants with watery juice 



and free central placenta . Portulacacew, p. 43 

 Sepals 3-5 ; placenta parietal . . Cistacew, p. 89 

 Ovary several-celled. 



TerrestriW herbs ; filaments united forming a 



I tube Malvacem, p. 89 



Aquatic or marsh herbs. 



Leaves pitcher-shaped . Sarraceniacece, p. 57 



Leaves peltate Nymphacece, p. 44 



Trees with 2-celled anthers . . . Tiliacece, p. 89 

 DD. Calyx adherent to the compound ovary. 

 Ovary 1-5-celled. 



Fleshy-stemmed plants without true foliage 



CactacecB, p. 92 

 Leaf-bearing plants. 



Calyx 2-parted Porlulacacew, p. 43 



Calyx of more than 2 parts. 



Leaves opposite, without stipules Saxifragacece, p. 58 

 Leaves alternate, with stipules . . Rosacece, p. 60 

 Leaves opposite, with stipules ; rough-leaved 



herbs . . Loasacece, p. 92 



00. Stamens not more than twice as many as the petals. 



D. Stamens of the same number as the petals and opposite 

 to them. 

 Ovary one. 

 Ovary 2-S-celled. 



Calyx minute, petals valvate in bud . Vitacece, p. 86 

 Calyx 4-5-clef t, folded inward in bud RhamnacecB, p. 85 



