— Vlll — 
Platyphylla 37, 
platyphylloidea . . . . 27, 
rivularis 
Porotrichum Bigelovii 
neckeroides 
Potentilla tridentata 
Pottiaceae 
Pottia littoralis 
Preissia quadrata 
Pseudoleskea catenulata 
denudata var. Holzin- 
geri 
radicosa 
rigescens 
Pterygophyllum lucens 
Pterygynandrum filiforme . 
“ var. minus 
Ptilidium ciliare 
Ptilium crista-castrensis 26, 
Ptychocoleus heterophyllus 
Ptychomitrium incurvum 
14,15,21,22, 
Pylaisia intricata 26, 
“ polymorpha 
“ Schimperi 15,22, 
Pyrenidiaceae 
Pyrenothrix nigra 
Radula complanata 
Rhaphidostegium adnatum 
carolinianum .... 
Roellii 
Rauia scita 
Reboulia hemispherica 
Rectolejeunea Maxonii 
Rhacomitrium 
aciculare 26, 
microcarpum 
sudeticum 
Rhacopilum tomentosum 
Rhaphidostegium microcarpum. . . . 
Kegelianum var. 
floridanum .... 
Rhinanthus crista-galli 
Rhizocarpon geographicum 
petraeum 
Rhizogonium spiniforme 
Rhododendron lapponicum 
Rhynchostegium 
serrulatum ...... 
Rhytidium robustum 
Riccardia latifrons 
“ multifida 
“ pinguis 
Ricciaceae 
Riccia 4, 
“ coriandrina 
“ reticulata 
Ricciella fluitans 
“ Sullivantii 
Ricciocarpus natans 
Rinodina exigua 
oreina 
Scapania compacta 
Scapania irrigua 36 
nemorosa 27, 36 
nimbosa 43 
paludicola . . . . 36 
planifolia 43 
“ subalpina 54 
“ undata 37 
Schistidium 42 
apocarpum 86 
gracile 86 
maritimum 41 
Schistostega osmundacea 74, 86 
Schlotheimia Sullivantii 53 
Scleropodium illecebrum 86 
obtusifolium . . 86 
Scouleria aquatica 86 
Scytonema 18 
Seligeria recurvata 86 
Sematophyllum adnatum 53 
subpinnatum 53 
Sphaerocarpus 17 
Sphagnum 4, 6, 19, 41, 46, 50 
acutifolium 86 
“ Angstroemii 49 
(group) Cuspidata 46 
var. Torreyi 48 
serrula- 
tum . . 48 
“ Krausei. 48 
“ Kruusei. 48 
“ mique- 
lonense 48 
“ serrula- 
tum . . 53 
cyclophyllum 53 
erythrocalyx 53 
fallax 47 
Faxoni 48 
Fitzgeraldi 49 , 53 
floridanum 53 
fuscum 12 . 
“ var. vancouveri- 
ense 86 
Girgensohnii 26, 32 
Helleri 49 
Kearneyi 48 
laxifolium var. serrula- 
tum 48 
Lindbergii 48 
macrophyllum 53 
magellanicum . . . .49, 53, 87 
mendocinum var. gracil- 
escens 87 
molle 53 
molluscum 45 
palustre 47, 53 
pseudocuspidatum 47 
pseudorecurvum 47 
pulchrum 48 
recurvmm 46. 47, 53 
tenue 47, 48 
ruppinense. . 47 
serratum 49 
72 
37 
72 
86 
86 
75 
3 
29 
34 
44 
86 
86 
86 
86 
86 
26 
36 
36 
86 
72 
76 
73 
26 
26 
18 
18 
37 
26 
26 
86 
26 
33 
7 2 
29 
75 
26 
75 
87 
53 
53 
75 
15 
15 
53 
76 
29 
53 
86 
34 
34 
34 
6 
1 7 
54 
54 
33 
33 
33 
15 
15 
27 
