9 



Embryo without distinct cotyledons. Fleshy, leafless, parasitic 

 plants. Flowers mostly imperfect. Rhizanths. 124 



Kmbryo with a pair of cotyledons, rarely without any, in which case 

 the leafless plants are parasitic, and are distinguished from the 

 Rhizanths by having two celled ovaries, with two ovules in each 

 cell. 



Flowers having a single perianth or none. 68 

 Flowers having both calyx and corolla. 



Petals all cohering by their edges. Monopetalous or Gamopetal- 



ous. 3 

 Petals or most of them separate or distinct. Polypetalom, Chori- 



petalous, or Dialypetalous. 



Corolla inserted on the receptacle or end of the flower stalk. 



Thalamifloral. 45 

 Corolla inserted on the calyx. 22 



3. Corolla inserted on the calyx. 16 



Corolla inserted on the receptacle. Corottijloral. 



COROLLIFLORAL EXOGENS. 



Stamens attached to the corolla. 5 



Stamens distinct from the corolla, and attached to the receptacle. 



Ovary consisting <t' a single carpel. Stigma surrounded by a 

 peculiar, two-cleft covering. Ovule single. Australian herbs 

 with 'radical leaves. BKUNOM ,\< i. i . 



Ovary composed of two or more carpels. 



Anthers opening by a pore at or near the top. 4 

 Anthers opening by a slit lengthwise. 



Plants without green leaves. MoMOTBOPAOBJS. p. 212. 

 Plants with green leaves, which in most cases, but not in all, are 

 punctate with translucent dots. RUTACE.E. p. 81. 



