NATURAL CLASSIFICATI()x\. 57 



when by natural anomalies (to be added and 

 expressed) they might somewhat deviate : as 

 happens in some Genera, Trifolium and Sapo- 

 naria &c. But the great anomalies allowed by 

 Jussieu in the Arnentacea, Saxifragea, Rham- 

 noides, Bicornes (fcc. are by no means deem- 

 ed to be such ; since they arise from blending 

 together different families, united by trivial 

 characters of lesser importance. Such orders 

 must therefore be divided by all means. 



But besides such regular Orders based on the 

 fructification, an essential but temporary part 

 of organization, the vegetable world offers 

 another series of permanent forms, which have 

 been deemed essential and very easily distin- 

 guished at first sight. In fact they are the only 

 ones available iu the study of fossil Botany, 

 since few fossil flowers and fruits are found ; and 

 the three great Series of plants have been based 

 thereon. 



1. Exogenes or Concentric Vascular, types 

 Trees, 



*i. Endogenes or fascicular Vascular, types 

 Palms. 



3. Larnagenes or Cellular, types Lichens. 



Altho' these Series are subdivided by the 

 organs of reproduction, their permanent organs 

 of support and nutrition offer xQvy important 

 bodily forms susceptible of indicating natural 

 Orders ; and in fact we now always add them 

 to the description of tribes and even Genera, 

 since Adanson and Jussieu gave the example. 

 See my new views on that score at the end o^ 

 my rectified Classes. 



14 



