122 VEGETABLE ORGANOGRAPHY. 



or elongated cellular tissue, the second both of cellular 

 tissue and vessels. The former are constantly devoid of 

 stomata ; the latter are generally furnished with them, — 

 with the exception of some species isolated into different 

 groups, where these organs are absent. The former 

 most frequently present an almost homogeneous mass, 

 with the organs of nutrition and reproduction but little 

 defined ; in the latter, all these organs are very distinct 

 and well characterised : the former have only a weak 

 and uncertain tendency to rise perpendicularly ; in the 

 latter this tendency is energetic and continued. All the 

 principal phenomena of structure and growth differ in 

 these two classes. 



Cellular Plants (vegetabilia cellulosa) have been 

 named Acoti/ledons by Jussieu; Agamia by Lamarck ; 

 Inembryones by Richard ; they form part of the class of 

 Cryi)togamia of Linnceus ; and of JEtheogamia of Beau- 

 vais ; — all these terms rest more or less upon hypotheses or 

 partial characters. I give them the name of Cellularks 

 when I consider them with regard to their nutritive 

 organs; and I employ the more extensive term of 

 Cryptogamia, in order to comprehend the cellular 

 plants, and those among the vascular the fructification 

 of which is indistinct, — as the Ferns. 



Vascular plants (vegetabilia vascularia) are often 

 designated by the names of Phanerogamia, Phcenogamia, 

 or Emhryones,, in contradistinction to those of Crypto- 

 gamia or Inembryones ; but these terms are as inaccurate 

 as those to which tliey correspond. I use the name of 

 Vasculares to designate all the plants provided with 

 tracheae and stomata, whatever may be their fructi- 

 fication ; and the more restricted terra of Phanero- 

 gamia (phanerogames) for those vascular plants the 

 fructification of v/hich is distinct, and more or less 

 synunctrical. 



V 



