No. 14.] 



FLOWERING PLANTS AND FERNS. 



551 



Sieglingia 



seslerioides 70 

 Silene 179 



antirrhina 179 

 var. divaricata 179 



Armeria 179 

 - caroliniana 179 



Cucubalus 180 



dichotoma 179 



inflata 430 



latifolia 180 



nivea 426 



noctiflora 179, 421 



pennsylvanica 179 



stellata 180 



vulgaris 180 

 Silk Grass 64 

 Silkweed 322 



Common 322 

 Silkworm Mulberry 154 

 Silky Cornel 305 



Willow 140 

 Silphium 390 



perfoliatum 390 

 Silver Maple 273 



Weed 234, 274 

 Silver-leaf Poplar 141 

 Silvery Cinquefoil 233 



Spleenwort 21 

 Simarubaceae 263, 437, 440 

 Sinapis 



alba 202 

 Sisymbrium 205 



Alliaria 205 



altissimum 205 



canescens 205, 433 



Loeselii 205 



officinale 205 

 var. leiocarpum 205 



Sophia 205, 433 



Thalianura 206 

 Sisyrinchium 128 



albidum 128, 431 



anceps 128 



angustifolium 128 



atlanticum 129 



gramineum 128 



Sisyrinchium 



graminoides 128 



intermedium 128 



mucronatum 128 

 Sium 300 



Carsonii 300 



cicutaefolium 300 



lineare 300 

 Skevish 387 

 Skullcap 333 



Mad-dog 233 



Marsh 333 

 Skunk Cabbage no 



Currant 219 



Grape 276 



Spruce 36 

 Sleepy Catchfly 179 

 Slender Fescue 76 



Knotweed 160 



Nettle 155 



Pigweed 169 



Rush 114 



Vetch 256 

 Slippery Elm 152 

 Sloe 244, 369 

 Slough Grass 68 

 Small Agrimony 241 



Alyssum 200 



Cranberry 314 



Green Wood Orchis 131 



Nettle 155 



Pale Green Orchis 130 



Red Morning Glory 324 



Snapdragon 351 



Solomon's Seal 123 

 Smaller Bladderwort 358 

 Small-flowered Cranesbill 262 



Crowfoot 186 



Geranium 262 



Pearlwort 174 



Sweetbrier 243 

 Small-fruited Hickory 145 

 Smartweed 162 



Common 162 



Water 162 

 Smilacina 122 



racemosa 122 



