INDEX 



4 2I 



Siphon 6 



Siphula ceratites 74 



dactyliza 74 

 Skeletons 3 



Smothering of trees 3, 140 

 Snow, red 173 

 Soil formers 9 

 Solorina crocea 117 



saccata 117 



spongiosa 117 



spongiosa (117) 

 Soranthera ulvoides 158, 186 

 Speira effusa 16 



minor 16 

 Sphacelaria cirrhosa 158, 161, 183 



racemosa arctica 158, 161, 183 

 Sphaerella adusta 33 



alni-viridis 32 



californica 29, 32 



crus-galli 32 



eriophila 31 



graminum 32, 58, pi. iv, f. 5 



grossulariae salicella 32, 58, pi. iv, 

 f . 6 



harthensis 27, 32 



ignobilis 33 



lacustris 173 



leptospora 31, 58, pi. iv, f. 7 



octopetalse 32 



ootheca 32 



pachyasca 33 



perexigua 31 



rumicis 33 



stellarinearum 32 



wichuriana 32 

 Sphaerographium abditum 18, 29, 62, 



pi. vi, f. 27 

 Sphserophoron coralloides 73, 134 



fragile 73 



globiferus (73) 

 Sphaerophorus 137 

 Sphaerozosma excavatum spinulosum 



172 

 Sphagnum 3, 7, 122, 331 



acutifolium 332 

 pallescens 332 

 rubrum 332 

 versicolor 332 



aongstroemii 332, 333, 335, 33$ 



Sphagnum balticum 332 



compactum imbricatum 333 

 cuspidatum recurvum (335) 

 cymbifolium 333 

 fimbriatum 333 



arcticum 333, 334 



fuscescens 333 

 fuscum 333, 336 



pallescens 333 



robustum 333 

 girgensohnii 334 



stachyodes (334) 



xerophilum 334 

 imbricatum cristatum 334, 335 

 lindbergii 334 



immersum 334 



microphyllum 334 



brachyclada (334) 

 brachydasyclada (334) 

 medium 334 



pallescens 335 

 molluscum 335 

 papillosum normale 335 

 parvifolium 335 

 recurvum 332, 335 



mucronatum 335 

 riparium 335 

 rubellum 335 



violascens 335 

 russowii 335 



rhodochroum 335 

 squarrosum 333, 336 



imbricatum 336 



brachyanoclada (336) 



semisquarrosum (336) 



subsquarrosum 336 

 subnitens 335, 336 



pallescens 336 

 teres 336 



subsquarrosum 336 

 warnstorfii 336 



purpurascens 337 



violascens 337 

 Sphinctrina turbinata 147 

 Spirogyra 14 



porticalis 173 

 varians 173 



Splachnum luteum 272, 306 

 sphsericum 272 



