418 DE CANDOLLE’S NATURAL SYSTEM. 
Division 2. Cellulares, or Acotyledonex ; that is, plants composed 
of cellular (parenchymatous) tissue only; and 
whose embryo is not furnished with cotyledons. 
The former division was again divided into two classes, called 
Exogene or Dicotyledonez, and Endogenz or Monocotyledonez, 
the essential characters of which may be thus stated :— 
Class 1. Exogenex, or Dicotyledonex ; that is, plants whose vessels 
are arranged in concentric layers, of which the 
youngest are the outermost and the softest ; and 
having an embryo with opposite or whorled cotyle- 
dons. 
Class 2. Endogenx, or Monocotyledonex ; that is, plants. whose 
vessels are arranged in bundles, the youngest being 
in the middle of the trunk ; and having an embryo 
with solitary or alternate cotyledons. 
These classes were again divided into sub-classes or groups. 
Thus, under the Dicotyledonee were placed four groups, named 
Thalamiflorze, Calyciflorze, Corollifloree, and Monochlamydez. 
Under the Monocotyledonez two groups were placed, called 
Phanerogamz and Cryptogame. The latter group, which in- 
cluded the higher Cryptogamia, was placed under Monocotyle- 
donez from a mistaken idea that the plants included in it pos- 
sessed an embryo of a somewhat analogous character to that of 
monocotyledonous plants. The Acotyledonez were also divided 
into two groups, called Foliosz and Aphylle. 
The following is a tabular view of De Candolle’s system. 
Sub-kingdom 1. VAScULARES, OR COTYLEDONEX. 
Class 1. Exogenx, or Dicotyledonex. 
Petals distinct, inserted with 
Sub-class 1.. Thalamiflore the stamens on the tha- 
( lamus. 
Petals distinct or more or 
2. Calyciflore less united, and inserted on 
the calyx. 
eae united, and inserted on 
the thalamus. 
Having only a single circle of 
floral envelopes, or none. 
3. Corolliflore 
4. Monochlamydex 
Class 2. Endogenx, or Monocotyledonex. 
Fructification visible, regu- 
lar. | 
Fructification hidden, un- 
known, or irregular. 
Sub-class 1. Phanerogame 
2. Cryptogamex 
