IJSTKODUCTION TO CRYPTOGAMIC BOTA^Y. 5 



temads (Fig. 3), as Alga) or Liverworts (Fig. 4) ;* and again, 



rig.'^3. 



a Apinagia piisilla, Tulasne. 

 b^Mniopsis Hook-oriana, Tul. 

 c Involucre of the same. 

 Fj'om Tulasne's MonographiaPodostemacearum,Tab. 7, ii., and Tab. 8, v. 



Fig. 4. 

 Sarcomitrium eriocaulum^ Mitten. From Hook. Muse. Ex., Tab. 72. 



* Modern observers have not always been free from this danger. 

 Witness the illustration by Corda as a Liverwort in Sturm's Deutsch- 

 land's Flora, Tab. xxxiii., Nos. 26, 27, of Blandoria striata, Cda. 

 Dicrcea Wallichii, Tul. was described by Taylor under the name of 

 Pohjpleurum on"ejito?<?,Tayl.MSS. in Trans. Eoyal Irish Academy, 1836. 

 I have not access to the work, but I believe that Taylor made the same 

 mistake as Corda. The genus is not recorded in Liudley's Vegetable 

 Kingdom . 



