ARTIFICIAL SYSTEM, SOMEWHAT REFORMED. 47 



5. ALG.E. Flags, fig. 123-126. Fucus natans. 



6. FUNGI. Mushrooms. % 129-133. 



The 3d and 4th of these Orders are added since 

 the time of Linnaeus. The whole will be explained 

 hereafter. 



The difficulties, or exceptions, to which the above 

 System is liable, are the following : 



Number in the parts of Fructification proves not 

 always uniform in one Genus or Species, nor even 

 in the same individual plant. In the latter case Lin- 

 nceus teaches that the central, or terminal, Flower 

 must be our guide, as in Euonymus, Monotropa, Ckry- 

 sosplenium, and Adoxa. When a species is vari- 

 able in the number of Stamens or Pistils, or if one 

 or more species of any genus differ from the rest in 

 those respects, such irregular species are to. be named 

 in a synoptical or analytical table at the head of 

 the particular Class or Order to which they techni- 

 cally belong ; though placed in due course, likewise, 

 in the proper Class and Order of the Genus of which, 

 independent of such artificial characters, they natu- 

 rally form a part. The same plan is, of course, to 

 be pursued with regard to any species, anomalous in 

 other respects, as the dioecious ones of Valeriana, 

 Lychnis, &c. 



That this System sometimes puts widely asunder 

 some genera naturally allied to each other (as a few 

 with Ringent Flowers, that by their natural affinity 

 belong to the 14th Class, placed in the 2d because 



