284 APPEKDIX. 



3d. The Endogenous Petaliferse have petals in their flowers, 

 while (4th) the Endogenous Glumiferse have green glumes 

 and pales instead of petals and sepals ; as Grasses. 



Cohorts are subdivisions of the Classes. Of these the 

 Flowering Plants include seven. A, the Polypetalous Exo- 

 gens, with corolla of distinct petals. B, the Gamopetalous 

 Exogens, with a corolla of united petals. C, the Apetalous 

 Exogens, without petals and often also without sepals. D, 

 the Conoids (the same as the Gymnosperms). seeds naked, 

 and borne in cones. E, the Spadiciflorse, Endogens with 

 the flowers on a spadix involved in a spathe (example, Calla). 

 F, the Florideae, Endogens with flowers in racemes, umbels, 

 etc., not on a spadix. G, the Graminoids or Grass-like 

 plants (same as the Glumiferae). 



The mutual relations of all the above divisions will be seen 

 in the following table, which will also instantly indicate the 

 Cohort to which any plant in hand may belong : 



