— 2 — 



B. Clavis Ordinum. 



Class. I. 

 PROTOPHYTA 



Ph. 



regetabilia aerea, 

 nunquam vere vi- ( 

 ridia 



' mycelio fugaci filamentoso e putredine 

 exorientia v. in aliis planus exanthe- 

 matica; sporidiis nudis superficialibus 

 V. in peridia v. ascos et*hymeniura in- 

 clusis : 



Ord.I. (I) V\mQlUnn.,Jms. 



thallo explanato v. fruticuloso-ramoso ; 

 sporidiis in apothecia inclusis et saepe 

 superficialibus : 



Ord. II. (2) LICHENES Achar. 



vegetabilia aquatica plque submersa, saepe virentia: 



Ord. 111.(3) k\Jj(MLinn,, Juss.e.e., Roth. 



Class. -II. 

 MÜSCOSiE Pb. 



fronde lobata v. surculis foliatis; sporangiis non opercu- 

 latis , valvatim v. tubulo v. poro dehiscentibus : 



Ord. I. (4) HEPATIC^ Juss. 



surculis foliatis ; sporangiis operculatis plque urceolatis , 

 rarissime valvatim dehiscentibus : 



Ord. II. (5) OPERCÜLAT^ Weh. et Mohr. 

 s. MÜSCI FRONDOSI HediD. 



[sporangiis capsuiaribus 2-v. 4-valv., axillarib. v. spicat. 

 I V. racemos.; fol. simpl. v. compositis: 



Ord. I. (6) DICLIDOPTERIDES KaulJ. 



sporangiis capsular. l-r. plurilocnl. non valvatis, plque 

 Class. III. I dorso frondis insertis , rarius paniculatim dispositis ; fol. 

 PILIClNiE Pb, ^frondosis, plque compos., vernatione circinato-involutis : 



Ord. II. (7) EPIPHYLLOSPERM^ Ray. 



organis fructificationis duplicibus, in sacculos inclusis; fol. 

 plque simpl. v. O: 



Ord. III. (8) THYLACOPTERIDES Pb. 



