24 

 Nixus 2. Lycopodales. Vasculares, caulocarppo, solidse. 



GyninotheccTe 272. Lycopodiaceae. 



CryptotheccE, involucris uniformibus 273. Marsileaceae. 

 Cryptothecsc, involucris biformibus . 274. Salvinieae. 



Nixus 3. Bluscales. Evasculares, heteronemeae, the- 

 ciferae. 



Operculatee, thecis evalvibus . . . 275. Musci. 

 Operculatse, thecis valvatis . . . 276. AndrEeacete m. 

 Deoperculatee, thecis valvatis . . . 277. Jungermanni- 



acea:! m. 

 Deoperculatse, thecis evalvibus . . 278. Hepaticae. 



Nixus 4. Charales. Evasculares, heteronemese, glo- 



buliferse 279. Characese. 



Nixus 5. Fungales. Evasculares, homonemese. 



Velatse 280. Fungi. 



Nudae, aerese 281. Lichenes. 



Nudse, aquaticffi 282. Algse. 



