[1921 



Index 



315 



var. fueginus, 158, 258; obtusi- 

 folius, var. sylvestris, 258; pallid- 

 U8, 155, 257. 



Ruppia maritima, var. longipes, 

 141, 192, var. rostrata, 192, var. 

 subcapital a, 199. 



Rynchospora, 175; capillacea, 25, 

 var. leviseta, 42; capitellata, 134, 

 234, var. discutiens, 42, 149, 

 160, 234; fusca, 234; glomerata, 

 134. 



Sabatia, 158, 160, 165; ehloroides, 

 286; decandra, 160, 300; Ken- 

 nedyana, 158, 160, 165, 167, 286, 

 300. 



Sagina nodosa, 150, 158, 198, var. 

 pubescens, 264. 



Sagittaria arifolia, 131, 137, 192; 

 cuneata, 131, 137, 192; graminea, 

 146, 192; teres, 135. 



St. John, H., A critical Revision 

 of Hydrangea arborescens, 203; 

 A freak Sweet Clover, 25; The 

 American Variations of Silene 

 acaulis, 119. 



Salix, 172; balsamifera, 176, 245; 

 coactilis, 26; cordata, 245; crassa, 

 176; discolor, 180; Drummondi- 

 ana, 176; Hooker iana, 176; humi- 

 Hs, var. keweenawensis, 257, 

 pameachiana, 176; pentandra, 

 68; purpurea, 95, 173, 199, 257; 

 pyrifolia, 245; rostrata, 257; 

 Scouleriana, 176; sericea, 257; 

 Smithiana, 257; tristis, var. 

 monadelphia, 173; 176; Torrey- 

 ana, 176. 



Salviniaceae, 210. 



Samolus floribundus, 105, 142, 2S6. 



Sanicula gregaria, 137, 170, 277; 

 marilandica, 277. 



Sarracenia purpurea, 148. 



Satureja vulgaris, 165, 170. 



Sauroglossum cranichoides, 84. 



Saxifraga, 70; micranthidifolia, 71; 

 virginiensis, 71. 



Scapania, 281, 282, 284; crassiretis, 

 283; curt a, 282; hvperborea, 

 281-284; irrigua, 283, var. alpina, 

 282, 283; paludicola, 283, var. 

 Kaalaasi, 283; paludosa, 284; 

 remota, 283. 



Scenedesmus abundans brevicauda, 

 66; dimorphus, 66; quadricauda 

 parvus, 66. 



Schiedeella, 73. 



Schizaea, 91, 97, 134, 135, 149, 153, 



161; pusilla, 91, 92, 99, 103, 135, 

 148, 158, 168, 170, 186, 300. 



Schweinitz, Barratt, Torrey and, 

 a Correction and a Discrepancy, 

 300. 



Scirpus, 24, 42; acutus, 101, 110, 

 131, 234, forma congestus, 131; 

 atrovirens, 134, var. georgianus, 

 134, 234; bracteatus, 24; cam- 

 pestris, var. Fernaldii, 234; capi- 

 tatus, 106; ccspitosus, 22-24; the 

 North American Representatives 

 of, 22, B. austriacus, 23, 24, B. ger- 

 manicus, 23, (i nemorosus, 23, var. 

 austriacus, 24, var. callosus, 24, 25, 

 99, 148, 199, 233, var. delicatulus, 

 25, var. nemorosus, 23; Clintonii, 

 25; cyperinus, 234, var. pelius, 

 234; geniculatus, 106; georgian- 

 us, 134; hudsonianus, 131, 233; 

 nanus, 233; obtusus, 24; occiden- 

 talis, 234, var. congestus, 131; 

 Olneyi, 103, 110, 142, 233; 

 pauciflorus, 164, 233; pedicellatus, 

 234; rufus, 103, 233; Smithii, 41, 

 42, An estuarian Variety of, 41, 

 var. levisetus, 42, var. setosus, 

 41, 42; subterminalis, 148, 233; 

 validus, 131, 233. 



Scoparia, 1. 



Scrophulariaceae, 1-3. 



Scullcap, 85. 



Scutellaria epilobiifolia, 85, 86, 

 forma albiflora, 86, forma rosea, 

 86; galericulata, 85, 86, forma 

 albiflora, 86, forma rosea, 86; 

 lateriflora, 86, forma albiflora, 

 86, forma rhodantha, 86, var. 

 albiflora, 86. 



Sea Lungwort, 102. 



Sedum acre, 265; roseum, 163, 

 265; stoloniferum, 94, 265. 



Selaginella apoda, 212, 218; rupes- 

 tris, 212, 220; selaginoides, 212, 

 218. 



Selaginellaceae, 212. 



Senecio aureus, 97, «. Balsamitae, 

 299; Balsamitae, 299; flavovi- 

 rens, 299; gaspensis, 299; obovat- 

 us, var. umbratilis, 299; pauper- 

 culus, 299, var. Balsamitae, 299; 

 Robbinsii, 97; sylvaticus, 299. 



Setaria viridis, var. Weinmanni, 229. 



Setiscapella subulata, 108; cleisto- 

 gama, 108, 291. 



Shad Bush, 130, 198. 



Shepherdia canadensis, 164, 170, 

 276. 



