PROPOSED ARRANGEMENTS. 187 



Brongniart's System. The arrangement of Brongniart is much 

 followed in Prance. Its general character may be understood from 

 the following table : 



Division I. Cryptogamae. Branch 1. AMPHIGENJE (Thallogens) ; 

 Branch 2. ACROGEN^S. 



Division II. Phanerogamae. 



Branch 3. MONOCOTYLEDONES. Series 1. Albuminosse ; 2. Ex- 

 albumiiiosse. 



Branch 4. DICOTYLEDONES. 



Subbranch 1. Angiospermce. Series 1. Gamopetalae : 

 i. Perigynae ; ii. Hypogynae. Series 2. Dialy- 

 petalae : i. Hypogynae ; ii. Perigynae. 

 Subbranch 2. Gymnospermce. 



Lindley's System is the one proposed by its distinguished author 

 in his ' Vegetable Kingdom.' Although the system itself was never 

 generally adopted, the book itself is an admirable encyclopaedia on all 

 points relating to Systematic Botany and the uses of plants up to the 

 date of publication. Lindley's main groups were : I. THALLOGENS ; 

 II. ACROGENS ; III. BHIZOGENS ; IV. ENDOGENS ; V. DICTYOGENS ; 

 VI. GYMNOGENS ; VII. EXOGENS ; the latter being subdivided into 

 Diclinous, Hypogynous, Perigynous, and Epigynous subclasses. 

 The subclasses w r ere again divided into alliances, and these into 

 orders. The special peculiarity of this system is the formation of 

 a group for certain root-parasites, destitute of true leaves ; and of 

 Dictyogens a class of plants with the netted venation of Exogens 

 and the ternary flowers of Endogens. 



Bentham and Hooker's System. Since the publication of the 

 * Vegetable Kingdom ' a very important work on Systematic Botany 

 has been commenced by Mr. Bentham and Sir Joseph Hooker, 

 entitled Genera Plantarum.' This work, so far as at present 

 published, comprises a description, in Latin, of all the known genera 

 of Polypetalous and Gamopetalous Exogens, together with analy- 

 tical tables admitting of the ready determination of any particular 

 genus, notes of aberrant or exceptional forms, &c. Their scheme 

 is more fully explained in the English translation of Le Maout and 

 Decaisne's ' General System of Botany/ edited by Sir Joseph 

 Hooker. Its main features are given in the following table. The 

 arrangement of the Monocotyledons, however, is taken from Mr. 

 Bentham's paper on the classification of Monocotyledons, in the 

 ' Journal of the Linnean Society ' for November 1876. 



