Polytrichum alpinum 34, 40 



" " var. propinquum 34 



" cavifolium 70 



" commune 40, 47, 71 



" gracile 2 



" " var. anomalum. . 47 



" inconstans 34 



" Jensenii 34 



" juniperinum 2, 47 



" " var. alpinum. ... 2 



" laevigatum 70 



" ohioense 40 



" piliferum 2, 47 



" strictum 47 



" Swarzii var. nigrescens 34 



" Wahlenbergii 34 



Porella pinnata 30, 81 



platyphylla 27, 39, 81, 86 



" platyphylloides 81 



Preissia quadrata 27, 39 



Psilopilum laevigatum 34, 70 



" tschuctschicum. . . . 34, 70 

 " " var. hymenocarpum 34 



" " " aloma . 34 



Pterygynandrum decipiens 40 



" filiforme 44 



Ptilidium ciliare 27, 39, 42 



" pulcherrimum 27, 42 



Ptilium 22, 23 



" crista-castrensis 46, 97 



Ptychomitrium incurvum 71 



Pylaisia 23 



" intricata 40, 44 



" polyantha 40 



" " pseudo-platygyrium 40 



" pseudo-platygyrium 40 



" Schimperi 40 



Racomitrium (see Rhacomitrium) 



Radula complanata 27, 39, 86 



Ramalina combeoides 96 



pollinaria f. elatior 96 



" reticulata 82 



Rhaphidostegium 10 



" laxepatulum 40 



" liliputanum 10 



" liliputianum 10 



" lilliputianum 10 



" Roellii 40 



" Whitei 40 



Reboulia hemisphaerica 35 



Reinkella Parishii 33 



Reynauldia Hoehnelii 80 



Rhabdoweisia 9, 75 



" crispata 37, 38, 69 



" fugax 38, 69 



Rhacomitrium 20, 21, 22 



" affine 47 



" aciculare 39, 79 



" canescens 39 



" fasciculare 39 



" hypnoides 39 



" lanuginosum 39 



" microcarpum 39, 79 



" Nevii 47 



" protensum 23 



Rhacomitrium robustifolium 47 



" sudeticum 44 



Rhizocarpon geminatum 96 



Rhizogonium medium laxifolium.. . 95 



Rhodobryum 21, 22 



Rhynchostegium 23 



" deplanatum. ...... 47 



" rusciforme. ........ 26 



Rhytidiadelphus 22, 23 



" calvescens 47 



" loreus 40 



** squarrosus 40 



" triquetrus 45 



Riccardia latifrons 27, 39 



" multifida . 41 



" palmata 47 



pinguis 27, 41 



" sinuata 41 



Ricciaceae 68 



Riccia arvensis. 27 



" crystallina 68 



" dictyospora 13 



" fluitans 27, 68 



" " var. canaliculata.. . . 68 



Ricciella fluitans 27 



Ricciocarpus natans 27, 68 



" " var. terrestris. . 27 



Rinodina dirinoides 11 



" euryospora Ii 



" succedens 96 



Saccogyna viticulosa 26, 27 



Saelania 22 



Scapania apiculata 47 



" Bolanderi 47 



" curta. 27 



" dentata 42 



" glaucocephala 27 



" gracilis 26, 39 



" irrigua 27, 47 



" nemorosa. ...... . 24, 27, 39 



" " var. uliginosa 26 



" paludicola 30, 42, 81 



" Oakesii 42, 81 



" subalpina 26, 30, 42 



" umbrosa 30, 42 



" undulata 27, 39 



Scytalina. 9 



Seligeria 75 



Sematophyllum delicatulum 40 



" Downii 95 



" recurvans 46 



rigens. ....... 95 



" tenuirostris 46 



Sphaerangium 75 



Sphagnaceae. ................... 78 



Sphagnum 2, 20, 21, 22 



" acutifolium 42 



" capillaceum , . 42 



" " var. tenellum. . . 43 



" cuspidatum 43 



" " var. Torreyi. ... 43 



" Dusenii. 37 



" fuscum 43 



" Girgensohnii 43 



" imbricatum 39, 47 



