422 SYSTEMATIC BOTANY. 



proper perianth, but consisting of imbricated 

 bracts. 

 The Cryptogamia constitutes a class by itself, thus : — 

 Class 3. AcoTYLEDONES, are those plants which are propagated 

 by spores, and are therefore acotyledonous, and have 

 an indefinite or vague (heterorhizal) germination; 

 the stem is present or absent, in the former case, 

 when woody, it is aerogenous ; the leaves are also 

 either absent or present, in which latter case the 

 veins are forked ; they have no true flowers. This 

 has two sub-classes : — 



Sub-class 1. Acroffencp.—^lsints with the stems and leaves 

 distinguishable ; and possessing stomata. 



Sub-class 2. J'hallogence. — Plants with no distinction of 

 stems and leaves ; stomata absent. 



The following is a tabular arrangement of the above system : — 



VEGETABLE KINGDOM. 



Sub-kingdom 1. Phanerogamia, Cotyledones, or Flowering 

 Plants. 



Class 1. DiCOTYLEDONES. 



Division 1. Angiospermia. 

 Sub-class 1. Thalamiflorse. 



2. Calyci florae. 



1. Perigynse. 



2. Epigynse. 



3. Corollifloi-jse. 



1. Epigynse. 



2. Hypostaminese. 



3. Epipetalffi. 



4. Moiiochlamydese. 



Division 2. Gymnospermia. 



Class 2. MONOCOTYLEDONES. 



Sub-class 1. Dictyogense. 



2. Petaloidese, or Floridse. 



1. Epigynse. 



2. Hypogynse. 



3. Diclines. 



3. Glumacese. 



Sub-kingdom 2. Cryptogamia, Acotyledones, or Elowerless 

 Plants. 

 Class 3. Acotyledones. 

 Sub-class 1. Acrogense. 

 2. Thallogense. 



