SYSTEMS OF CLA.SSIFICATION 19 



Vasculares or Cotyledonete, and Cellxilares or AcotyledoneiB, 



the characters of which he described as follows : — 



Division 1. Vasculares, or Cotyledonece ; that is, plants possessing 



both cellular (parenchymatous) tissue and vessels ; 



and having an embryo with one or more cotyledons. 

 Division 2. CcUulares, or Acotyledonece ; 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 

 Exogenae or Dicotyledonea3, andEndogense or Monocotyledoneie, 

 the essential characters of which may be thus stated : — 

 Class 1. Exogente ,or DicotyledonecB ; 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. Endogence, or Monocotyledonece ; 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. 

 Tlius, under the Dicotyledone£e were placed four groups, named 

 Thalamiflorse, Calyciflor^, CoroUiflorfe, and Monochlamydese. 

 Under the Monocotyledonese two groups were placed, called 

 Phanerogamse and Cryptogamee. The latter group included 

 what are now called the Vasctdar Cryptogams, or Pteridophyta. 

 The Acotyledones were also divided into two groups, called 

 Foliosse and Aphyllfe. 



The following is a tabular view of De CandoUe's system. 



Sub-Kingdom 1. — Vasculares, oh CotylbdonEjE. 



Class 1. ExogencB, or Dicotyledonecr. 



! Petals distinct, inserted with 



Sub-Class 1. Thalamiflorce \ the stamens on the tha- 



^ lamus. 



f Petals distinct or more or 



2. Calyciflorce -j less united, and inserted on 



I the calyx. 



„ „ „.- (Petals united, and inserted 



•' ( on the thalamus. 



, ,, ,, , (Having only a single circle or 



4. Monocnlamiidece \ n i i 



•' [ floral envelopes, or none. 



c 2 



