306 LINN7EAN ORDERS. 



2. Musci. Mosses, which have real separate leaves, 

 and often a stem ; a hood-like corolla, or calyptra, 

 bearing the style, and concealing the capsule, which 

 at length rises on a stalk with the calyptra, and 

 opens by a lid. 



3. HttPATlC^E. Liverworts, whose herb is a frond, 

 being leaf and stem united, and whose capsules da 

 not open with a lid. Linnaeus comprehends this 

 Order under the following. 



4. ALG.ZE. Flags, whose herb is likewise a frond, and 

 whose seeds are imbedded, either in its very sub- 

 stance, or in the disk of some appropriate receptacle. 



5. FUNGI. Mushrooms, destitute of herbage, bearing 

 their fructification in a fleshy substance. 



Such are the principles of the Linnaean Classes and 

 Orders, which have the advantage of all other systems 

 in facility, if not conformity to the arrangement of 

 nature; the latter merit they do not claim. They are 

 happily founded on two organs, not only essential to a 

 plant, but both necessarily present at the same time; 

 for though the Orders of the fourteenth and fifteenth 

 Classes are distinguished by the fruit, they can be 

 clearly ascertained even in the earliest state of the 



germen 



* An instance apparently to the contrary occurs in the history of 

 my Hastingia coccitiea, Exot. Bot. t. 80, a plant most evidently, both 

 by character and natural affinity, belonging to the Didynaniia Gymno~ 



