5 (j (j SAXIFRAGALES. [Perigynous Exogens. 



Alliance XLIII. SAXIFRA GALES.— The Saxifragal Alliance. 



D.agnos.s. -Per,,,mous Exogens, with monodichlamydeous flowers, consolidated carpels, 

 sutured or a rile placenta; 00 seeds, a polypetalous corolla if any ts present, and a 

 small taper embryo with a long radicle and little or no albumen. 



The transition from the Rosal to the Saxifragal Alliance has already (p. 539) heen 

 shown to'ake place by way of Roseworts and Saxifrages To the Rhamnal Alliance 

 Saeak pass by way of Brexiads, which are singularly like the genus Eksodendron 

 ^&ri The resemblance of the Orders indud «d ^8 f^** 

 <n-eat that the first three are often regarded as mere forms of the Order of Saxifrages , 

 LoosestrU-es are less obviously similar, but if their herbaceous genera are compared 

 wSSxlfSge'or their shrubs with Brexiads, the affinity becomes sufficiency strikmg. 

 Loosestrifes appear to furnish a lateral connection with Melastomads or Syringas. 



Natural Orders of Saxifragals. 



Styles ditinct. Leaves alternate 214. Saxifragace^. 



Styles distinct. Leaves opposite, without stipules 215. Hydrangeace.k. 



Styles distinct. Leaves opposite, with large interpetiolar stipules. 216. Cunoniace^. 

 Styles consolidated. Calyx many-leaved. Albumen 0. Leaves} 217 Brexiace*. 



alternate -> 



Styles consolidated. Calyx tubular, permanent, with the petals "I g] g l YTHRACE ;E. 



in the margin. Albumen 0. Leaves opposite .... J 



