— Vlll — 



Myurella. . 23 



" Careyana 40 



" gracilis 40 



" julacea 44 



Nanomitrium synoicum. 49 



Nardia crenulata 28, 39 



" crenuliformis (PL II, 



figs. 1-9) 24, 25 



" Geoscyphus 47 



" hyalina 24 



" obovata. 41 



" scalaris 40 



Neesiella pilosa 28 



" rupestris 27 



Neckera 23 



" complanata 40 



" Hoehneliana 80 



** Hoehnelii 80 



" pennata 8, 40 



Ochrolechia pallescens . . 34 



Odontoschisma denudatum 29, 39, 86 



" Macounii. 42 



Sphagni 39 



Oligotrichum incurvum 34 



" " var. latifolium. , 34 



" " " brevifolium. 34 



Omphalaria 95 



Oncophorus 9 



" polycarpos 3, 43 



" virens 3 



" " serratum. ....... 3 



Opegrapha atrorimalis . 96 



" vulgata 96 



Orthotrichaceae 4, 8 



Orthotrichum 21, 22, 88 



" affine 39 



" alpestre 4 



" fastigiatum. 39 



Hatlii... 4 



" Kingianum. 4 



" Lyellii 4 



" obtiisifolium ....... . 39 



" ohioense 71 



" Porteri. 71 



" rupestre 39 



" Schimperi 4 



" Schlotthaueri. 4 



" Shawii 4 



" speciosum 4, 47 



" " polycarpum.. 5 



' strangulatum. 47 



" Watsoni. 5 



Oxyrhynchium. 23 



" praelongum 46 



" rusciforme 40 



" " var complana- 



tum.. . . 46 



Pallavicinia Lyellii. 41 



Parmelia cylisphora 96 



" tiliacea 96 



Parmeliella lepidota coralliphora.. . 96 



Pellia 24 



" epiphylla 27, 39 



" Fabroniana 41 



" Neesiana. 28, 41 



Pertusaria flavicunda 96 



Pestalozzia 89 



Phascum. . 75 



" bryoides pilifera 73 



" carniolicum 17 



" cuspidatum americanum. . 73 



" piliferum 73 



Philonotis. 20, 21, 22 



" americana 40 



" calcarea 79 



" fontana 39, 71 



" Marchica 44 



" Muhlenbergii 5 



" seriata 5 



Physcia asteroidea 96 



" tribacea 50, 96 



Physcomitrium 21, 22 



" Drummondii 71 



" Hookeri 71 



" immersum 73 



Plagiochila asplenioides. . . . 26, 27, 39 



" punctata 27 



" Smallii 14 



" spinulosa 26, 27 



Plagiopus Oederi 39 



Plagiothecium : . 23 



aciculari-pungens.. . . 40 

 denticulatum. 8, 40, 91 



" var. laetum 92 



" f. propagulifera 91 



elegans 46 



Muhlenbeckii 40 



Roeseanum 47, 91 



" var. gracile.. 91 



striatellum 40 



Sullivantiae 47, 91 



sylvaticum 46, 91 



turfaceum 46 



Platygyrium 23 



Pleuridium Bakeri 49 



" Bolanderi 49 



Pogonatum 21, 22 



" aloides 34 



" alpinum . 34, 40 



" " brevifolium 2 



" bornense 95 



" brevicaule 40 



" dentatum var. minus. . . 34 



" longidens 34 



" mnioides 34 



" nanum 34 



" polytrichoides 34 



" tenue 40 



" urnigerum 34, 40, 82 



Pohlia. . . '. 21, 22 



annotina 47 



commutata 6 



cruda 6, 39 



nutans 6, 44 



proligera 6, 47 



pseudocarneum 47 



pulchella 47 



sphagnicola 47 



Polytrichaceae 2, 33 



Polytrichum 21, 22, 50 



