LINN^AN CLASSES. 307 



ren or fertile flowers may be found among the united 

 ones, while all agree in general structure, the Class 

 will be overwhelmed, especially with Indian trees. I 

 have therefore proposed that regard should be had to 

 their general structure, which removes all such incon- 

 venience, and renders the Class much more natural. 



24. Cryptogamia. Stamens and Pistils either not 

 well ascertained, or not to be numbered with any 

 certainty, insomuch that the plants cannot be referred 

 to any of the foregoing classes. Of this Ferns, Lich- 

 ens, Sea- weeds and Mushrooms are examples. 



Appendix. PALMiE, Palm-trees, a magnificent 

 tribe of plants, chiefly tropical, whose flowers were 

 too little known when Linnaeus wrote, to serve the 

 purpose of classification ; but they are daily clearing 

 up, and the Palms are found generally to belong to 

 the Classes Monoeciay Dioecia, or Hexandria. 



The Orders of the Linnaean System are, in the first 

 13 Classes, founded on the number of the Styles, or on 

 that of the Stigmas when the Styles are wanting, which 

 occurs in Viburnum. Such Orders are accordingly 

 named 



MoNOGYNiA. Style, or sessile Stigma, L 



DiGYNiA. Styles, or sessile Stigmas, 2. 



Trig YN I A ■ ■^' 



Tetragynia ^f 



Pentagynia 5. 



