ARTIFICIAL SYSTEM, SOMEWHAT REFORMED. 47 



5. Algje. Flags, fig. 123-126. Fucus nutans. 



6. Fungi. Mushrooms, fig. 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- 

 nseus teaches that the central, or terminal, Flower 

 must be our guide, as in Euonymus, Monotropa, 

 Chrysosplenium, and Adoxa. When a species is va- 

 riable 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 

 naturally form a part. The same plan is, of course, 

 to be pursued with regard to any species, anoma- 

 lous in other respects, as the dioecious ones of Va- 

 leriana, 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 



