434 



SKETCH OF PALEOBOTANT. 



flcial one, but, like all the rest, an effort at real classification. More 

 clearly to indicate this I have arranged it in logical form, and, for brev- 

 ity's sake, have introduced a number of non-Linnsean terms : 



The Linncean system. 



Cryptoffamia Cryptogamia. 



(- t Poly^amia. 



Diolinae I Diceoia. 



( Moncecia. 



Gynandria Gynandria, 



Phaeno- 

 gamia. 



HermaphroditsB ^ Eleutherogynia • 



Desmandria 



Elentheran- 

 dria. 



{Syngynesia. 

 Polyadelphia. 

 Diadelphia. 

 Monadelphia. 

 Anisan-C Tetradynamia. 

 dria. J Didynamia. 

 'Polyandria. 

 Icosandria. 

 Dodecandria. 

 Decandria. 

 Enneandria. 

 Octandria. 

 Heptandria. 

 Hexandria. 

 Pentandria. 

 Tetrandria. 

 Triandria. 

 Diandria. 

 ^Monandria. 



Isandria' 



I. 



All who are familiar with the Linnsean system will, of course, ob- 

 serve that the order is here invertafl. The names of the successively 

 larger groups, with the exception of the terms " Cryptogamia" and " Phte- 

 nogamia," are merely invented to obviate the necessity of describing 

 those groups. This form of presentation clearly shows to how large an 

 extent Linnaeus aimed at a logical classification. 



3. SYSTEMS OF THE JDSSIEUS. 



We will next glance at the systems of the Jussieus. Bernard de 

 Jussieu has merely left us his catalogue of the garden of Trianon, 

 but this enigmatic list of names is regarded by modern botanists as 

 containing the germ of all later systems. Guided by it, his nephew, 

 Antoine Laurent de Jussieu, proceeded to elaborate the celebrated Jus- 

 sisean system, of which a mere outline is presented in the following table : 



System of A. L. de Jussieu. 



Acotyledons. 

 Monocotyledons. 



SApetalae. 

 Dicliuae. 

 This system, as will be observed, rests primarily upon the number of 

 cotyledons, and in making the Cryptogams co-ordinate with the Mono- 

 cotyledons and the Dicotyledons fails to draw the great dividing line 

 which Linnaeus clearly perceived between the Cryptogamic and the 

 Phaenogamic series. 



