Mnium stellare 51 
" siibglobosum 42 
Molendoa 108-9 
" obtusifoliata 108 
Mycoblastus sanguinarius 5 
Mycoporum pycnocarpum 2 
Mylia anomala 46 
Myurella 60 
" gracilis 53 
" julacea 53 
Myurium Foxworthyii 39 
Nanobryum Dummeri no 
Nardia varians 25 
Neckera crispa f. stricta 109 
glossiphylla 39 
" oligocarpa 42 
" pennata 16, 52 
Neesiella rupestris 23 
Nephroma helveticum 37 
" laevigatum 36, 37 
'[ parile 37 
" resupinata 105 
Nephromopsis ciliaris 75 
Ochrolechia pallescens 73 
" tartarea 73 
Oedipodiella australis no 
Oligotrichum cavifolium 19 
Omphalaria pulvinata 35 
Oncophorus Wahlenbergii 49 
Ondontochisma denudatum 46 
Opegrapha varia 3 
Oreoweisia serrulata 37 
Orthothecium chryseum 64 
Orthotrichum affine 50 
" anomalum 50 
" brachytrichum . ... 50 
" Braunii 42, 94 
" Jamesianiim 94 
" obtusifolium 50 
" ohioense 10, 15, 42 
" rupestre 64, 87, 88 
" sordidum. ... 10, 15, 50 
" speciosum I5> 60 
" strangulatum 15 
Oxyrrhynchium praelongum hians 42 
" rusciforme 12, 57 
Pachyphiale carneolutea 38 
Pallavicinia Flotowiana 45 
Lyellii 45 
Paludella squarrosa 42, 64 
Pannaria crossophylla 36 
" lanuginosa 80 
" leucosticta 36 
" lurida 36 
" nigra 36 
" Petersii 80 
" rubiginosa 105 
" Borreri 74 
" " rudecta 74 
" caperata 74, 106, 107 
cetrata 74 
" colpodes 75 
" conspersa 74, 107 
^' coralloides 112 
Pannaria crinita pilosella 74 
dubia 74, 106 
exasperata 74 
furfuracea 74 
" Cladonia.74, 107 
hyperopta 73 
Nilghertensis 107 
olivacea 74 
" aspicota 74 
" panniformis ... 74 
perforata hypotropa . ... 106 
perlata 74, 106 
pertusa 74 
physodes 74, 107 
" vittata 74 
placorodia 107 
proboscidea 112 
prolixa panniformis. ... 74 
rudecta 74, 105, 106 
saxatilis 74, 106, 107 
" furfuracea .... 74 
" sulcata 75 
subaurifera 75 
subquercifolia 75 
sulcata 75, 106, 107 
tiliacea 75 
" sublaevigata ... 75 
" subquercifolia . . 75 
" vicinior 75 
verruculifera 75 
Parmeliella crossophylla 36 
" microphylla 36 
Parmeliopsis ambigua 73 
" diffusa 73 
" placorodia 73 
Pellia epiphylla 45 
" Fabroniana 45 
" Neesiana 45 
Peltigera aphthosa 58, 105 
canina 58, 105 
" " membranacea. . . 106 
" " sorediata 58 
" " spongiosa 58 
undulata 58 
" horizontalis 58, 105 
" polydactyla 58, 105 
" rufescens 58 
" praetextata . . . 58 
" spuria 106 
Pertusaria amara 58 
" communis 59 
" globularis 58 
" leioplaca 58 
" multipuncta 59 
pertusa 59 
" pustulata 59 
" Wulfenii 59 
" velata 59 
Phascum crispum 68, 70, 71 
" Muhlenbergianum . . . .67, 86 
" multicapsulare 70 
nitidulum 68, 69 
" sphaerocarpon 70 
Philonotis alpicola 37 
