424 



INDEX 



Verrucaria intercedens 72 



intermedia 72 



laevata 72 



leptaleoides 72 



maura 71 



maurioides 72 



conyzoides ^2 



mucosa 71 



muralis dolosula ^2 



nigrata 72 



obnigrescens 72 



obtenata 72 



pernigrata 72 



prominula 72 



punctiformis 72 



pyrenophora 72 



sublectissima 72 



subumbrina 72 



terrestris 72 



thelodes 71, 72 



verrucosa-areolata ^2 

 Vibrissea truncorum 26 



Webera 280 



albicans 277 



glacialis 277 

 annotina 277, 306 

 cruda 275 

 crudoides 277 

 cucuUata 276 

 cucuUatiformis 277 

 drummondii 276, 277 



Webera gracilis 276 

 nutans 275 



bicolor 276 

 csespitosa 276 

 strangulata 276 

 polimorpha 277 

 proligera 277 



pseudo-gracilis 276, 316, p1. xxxiv, 

 f. 2 

 Wicks 7, 8 

 Woodsia alpina 386 



alpina glabella (386) 

 glabella 386 

 hjperborea (386) 

 rufidula (387) 

 ilvensis 387 

 obtusa 387 

 scopulina 387 



Xanthidium antilopaeum 167, 212, p1. 

 X, f. 38 



armatum 167, 214, p1. xi, f. 18 

 Xjlographa 79 



opegraphella 74 



parallela pallens 75 



Zonaria tournefortii 157 

 Zoostera (154) 

 Zostera 154 



marina 183, 184, 187 

 Zygnema 162, 173 



' ^ Of THE 



VNJVERSITY 



