PLATE XXVIII. 



FIGS. PAGE 



1-2. Pleurotasnium coronatum var. fluctuatum West. 



1, x 430; 2, x 400 . . 2(>() 



o. PL corona turn var. robnstum West. x 400 . 200 

 4. PI. coronatum (Breb.) Rabenh. x 520. Semi- 

 cell showing the disposition of the chloro- 

 plasts . .199 



58. PL coronatum var. nodulosum (Breb.) West. 

 5, x 400 ; 6, x 220 ; 7 and 8 ; two apices, 

 x 520 200 



