Vlll — 



Rhododendron lapponicum 44 



Rhytidiadelphus squarrosus 48 



" triquetrus 99 



Rhytidium rugosuni 43, 45 



Riccardia pinguis 64 



Ricciaceae 31 



Riccia Beyrichiana 33> 35 



bifurca 35 



glauca 35. 60 



dictyospora 35, 36 



Lescuriana 13, 34-36 



"Lesquereuxii" 34 



McCallisteri 



(PI. Ill, fig. 2), 35, 36 

 violacea. . . . (PI. HI, fig. i), 36 



sorocarpa 60 



Ricciella fliiitans 60 



" Sullivantii 45, 68 



Rinodina exigua 84 



Hallii 84 



" turfacea 84 



Saelania 49, 60 



" caesia 60 



" glaucescens 



59, (PI. XIX), 60, 67 



Sagedia cestrensis 90 



Salix lasiandra Lyallii 77 



" Scouleriana 77 



" Uva-ursi 44 



Sauteria alpina 13 



Scapania Bartlingii 13 



" convexula 46 



" dentata 43 



" " var. speciosa 45 



irrigua 43 



" nemorosa 46, 67 



" paludosa 13 



" subalpina 43 



" uliginosa 13 



" umbrosa 13, 46 



" undulata 61, 67 



Schoeppia chrysophylloides 26 



Selaginella 81 



Seligeria 29 



Sematophyllum carolinianum 67 



Simaruba glauca 26 



Solidago 43 



Solorina crocea 81 



Spathiger rigida 26 



Sphaerophorus globosus 78, 79 



Sphagnum 28, 29. 43, 44, 98 



" (group Cuspidata) 84 



" (group Squarrosa) 89 



" acutifoHum 65 



" amblyphyllum 86, 88 



" " var. parvifolium.. . 87 



Sphagnum angustifolium 87 



" annulatum 89 



balticum 86-88 



" cuspidatum 86, 87 



" " var. brevifolium 87, 88 



fallax. 86 



" intermedium 84, 88 



" inundatum 64 



" Jensenii 88 



" mendocinum 89 



" parvifolium 87 



" propinquum. 89 



" pulchricoma 85, 86 



pulchrum 86, 88, 89 



" recurvum 84-89 



" " amblyphyllum 86 



" " angustifolium.. 86 



" " balticum 86 



" " mucronatum.. . 86 



" " parvulum. . 87-88 



pulchrum. . 86, 88 



'\ _ tenue 87, 88 



" riparioides 85 



" squarrosum 65 



" subsecundum. ... 64, 85, 89 



" teres 89 



Sphenolobus exsectaeformis 46 



" exsectus 67 



" minutus 13 



" politus 13 



Sphinctrina turbinata 99 



Stereocaulon paschale var. conglo- 



meratum 80 



Squamaria 74 



Sticta anthraspis 81 



Swartzia 49, 5 1 



inclinata 52 (PI. VII) 



montana 51 (PI. VI) 



Targionia hypophylla 60 



Taxus brevifolia 77 



Tectaria minima 24 



Temnoma setiforme 44 



Thamnium allegheniense 67 



Thamnolia vermicularis 80 



Thelia asprella 98 



" Lescurii 90 



Thelotrema lepadinum 79 



Thuidium delicatulum 67 



Thuja plica ta 76 



Tortella caespitosa 41 



" tortuosa 67 



Trichodon 49, 50, 52 



borealis 52, 53 (PI. IX) 



" cylindricus 52 



tenuifolius 52, 53 (PI. VIII) 

 Trichomanes Kraussii 24 



