46 EXPOSITION OF THE LINNjEAN 



thers, and a Proper Calyx, all included in one 

 Common Calyx. 



The 6thLinngean Order, Monogamia, consisting of 

 Simple Flowers, with united Anthers, is abolished, as 

 being unnatural, and extremely uncertain, fig. 195 b. 



The Orders of the 20th Class are distinguished 

 by the number of their Stamens. Gynandrla Monan- 

 dria, fig. 70-72, 77, 78. Tetrandria, 73-76. 



Those of the 21st and 22d are marked by the same 

 circumstance, or by any other character of the pre- 

 ceding Classesfounded on the union of the Filaments. 



The Orders of the 23d are, 



1. Monoecia. The two or three different descrip- 

 tions of Flowers all on the same plant. 



2. Dioecia. The different descriptions of Flow- 

 ers on two separate plants. 



3. Trioecia. The same on three separate plants. 

 The Orders of the 24th Class are natural orders 



or families. 



1. Filices. Ferns, fig. 96-98. Equisetum sylva- 

 ticum. 99-101. Aspidium Filix-mas. 102-104. 

 Scolopendrium vulgar e. 



2. Musci. Mosses, fig. 105-108. Dicranum pur- 

 pureum. 109-113. Hookerialucens. 



3. Hepaticje. Liverworts, fig. 114, 115. Jun- 

 germannia multijida. 



4. Lichenes. Lichens, fig. 116, 117. Opegrapha 

 scripta. 118-120. Lecanoramurorum. 121, 

 122. Peltidea canina. 



