PLATE XXVIII. 











5O MIicRONS 


Figs. 240 and 241. Oedogonium crenulatocostatum Wittr...................... 92 
Figs. 242 and 243. Oe. crenulatocostatum v. longiarticulatum Hansg.......... 93 
Bice 244eOe. crenulatocostatuml ft cylingr1 cui bit) da 2 ee ete ae 93 
Fig. 245. Oe. crenulatocostatum v. aureum Tilden. (Redrawn from Hirn)... 93 
Fig. 246. Oc. dictyosporum Wittr. (Redrawn from Hirn).................... 94 
Fig. 247. Oe. arcyosporum Nord. and Hirn. (Redrawn from Hirn)........... 94 
Figs. 248-250. Oe. areolatum Lagerh. (Redrawn from Hirn)................. 94 
Big. Zot. Wer hochnel Gorze. “Rkedrawn from Borge)... ... 5.00005 222s eens 165 


