HEPATIC MOSSES. 367 



lire dissimilarity of the frons between it and the he- 

 patic I had arranged as a second species of Targio- 

 nia, there was so great a difference in their fructifi- 

 cation, that they could not possibly be considered 

 congeners. As little, however, can the one in ques- 

 tion be referred to any other established genus ; L am, 

 therefore, under the necessity of proposing it as a 

 new genus, to which I have given the name Carpo- 

 bolus, from the circumstance, that the capsule is pro- 

 truded from the calyx when ripe. 



Generic Description. 



Capsula oblongo-sphaeroidea compressa desilien- 

 ti, apice rima notata (an dehiscenti?) sporis minutis 

 globosis repleta, inter se liberis. Calyce majusculo, 

 bin" do, erecto aut inclinato, capsula ejecta, inani, per- 

 sistenti. Fronde oblongo-orbiculari, in ambitu va- 

 rie lobato-plicata ; plicis omnibus in centrum conver- 

 gentibus, marginibus elevatis, crenatis, substantia 

 Anthoceri. Plures frondes confluunt, nunquam au- 

 tern sese invicem superincumbunt. 



Observations. The frons of this interesting hepa- 

 tic, is of the consistence and texture of that of Antho- 

 ceros, or perhaps still more like that of a Collema. 

 When wet, it becomes subtremellose, and dries stiff- 

 ly and brittle, shrinking to a considerable degree. 

 The colour is in general brown, excepting in the 

 outer lobes, which are greenish, and sometimes whole 

 specimens, especially the larger ones, assume the bot- 

 tle green of Anthoceros. Its internal structure is 



