28 METHOD OP ANALYSIS. 



ical Journey, and the plant being his Directory ; if he can read the 

 botanical characters impressed on it by the hand of Nature, he will, 

 by following system, soon arrive at his journey's end.* 



Let us suppose, then, we have before us a plant in blossom, of 

 whose name and properties we are ignorant. — The name must be 

 first ascertained, and this can only be done with certainty by the 

 Linntean system. 



In the first place we have two comparisons to make. 



1st. Whether the Stamens and Pistils are visible. 



2d. Whether they are invisiblg. 



If the Stamens and Pistils are not visible, we have already arrived 

 at the class, which is Cryptogamia. 



If, however, the Stamens and Pistils are visible, we have now two 

 comparisons to make. 



1st. Whether the flowers have stamens and pistils on the same co- 

 rolla. 



2d. Whether the Stamens and Pistils are placed on different co- 

 rollas. 



If the Stamens and Pistils are on different flowers, we then shall 

 find our plant either in the class Dicecia. or Monaecia ; according as 

 the Stamens and Pistils are on different flowers, proceeding from the 

 same root, or from different roots. 



But if our plant has the Stamens ahd Pistils both enclosed in the 

 same corolla, we must next examine, 



1st. Whether the Anthers are separate, or, 



2d. Whether the Anthers are united. 



If we find^i'e anthers united around the pistil, we have found the 

 class of our plant; it is Syngenesia. 



If the Anthers are separate, we must proceed to a fourth stage, and 

 see, 



1st. Yifhether t\\e filaments are separate, or, 



2d. Whether the filaments are xmited vf'ith^ each other, or, 



3d. Whether the filaments are united, to the pistil. 



If the latter circumstance is ascertained, we need search no 

 farther ; our plant is in the class Gynandria. 



If the flower has not the filaments united to the pistil, We must as- 

 certain if the filaments are united with each other ; if they are so, 

 and in two palxels or sets, the flower is in the class Diadelphia, but, 



If in one parcel or set, it is in the class Monadelphia. 



But i^ the filaments are separate, we must next examine, 



1st. Whether these are similar in length, or, 



2d. Whether they are of different lengths. 



(Of different lengths, those only which have /owr or six stamens are 

 to be regarded.) 



If we find our flower has six stamens, four long and two short, we 

 need go no farther, this is the class Tetradynamia. 



If the flower has four stamehs, two long, and two short, it is in the 

 class Dydynamia. 



If our flower comes under none of the foregoing heads, we must 

 then count the number of stamens ; if these amount to more than tenj 

 we must then consider their insertion, as, 



* Thornton. 



Whaf two comparisons to be first made in analyzing a plant— When the stamens 

 and pistils are enclosed in the same corolla, what is next to be considered'? — When 

 the anthers are separate, what must be done 7 — If the filaments are separate, what 

 must be observed'?— If the flower has not stamens of unequal length, what is to ba 

 observed 1 



