260 



INDEX. 



Page. 



.'Sisymbrium 66, 151 



Alliaria 30 



Thaliana 28 



SisyrincMum 121,187 



anceps 31 



Sium 82,162 



Skullcap 105 



Skunk Cabbage 117 



Sleepy Catchfly 68 



: Slender Forked CMckweed 69 



Gerardia 102 



Ladies' Traces 119 



Slippery Elm 110 



Sloe 77 



.Small Bedstra-tv^ 85 



Cat-tail 117 



Morning-Glory 180 



Spearwort 62 



Yellow Lady's Slipper 120 



Moccasin Flower 120 



'.Smaller Bur-Marigold 91 



Solomon's Seal 122 



Sm aUer-flowered Sweet-Brier 78 



Small-flowered Agiimony 78 



CranesbOl 71 



Crowfoot 62 



Wild Sensitive Pea 76 



Small-fruited Hickory Ill 



Smartweed 108 



Smilaceae 121 



Smilacina 122,188 



stellata 24 



Smilax 121,187 



Family • 121 



Smooth Alder , 



Sumac 



Smootb-fruited Com-Poppy 



Snake-head 



Snake-mouth 



112 



73 



64 



101 



119 



Snakeroot 63,68,82,86,109 



Sneeze-weed 91 



Snowberry 84 



Snowy Campion 68 



:Soapberry Family 73 



Soap wort 68 



Gentian 98 



Soft Chess 133 



Kush 123 



: Solanaceaj 100 



Solanum 100,175 



Carolinense 49 



Dulcamara 13 



Virginianum 13 



■Solea 67 



. Solidago 86, 165 



altissima 



Canadensis 



elUptica 



neglecta 



nemoralis 



rupestris 



stricta 



ulmifolia 



Virga-aurea, var. bumilis 



Tirgata 



Page. 



Solomon's Seal 122 



Sonchus 93, 170 



Sorghum 136,199 



Sorrel 71,109 



Sour Gum 48,83 



Southeastern United States, Flora of the.. 42 



Southern Fox-Grape 72 



Sow-Thistle 93 



Spanish Needles 91 



Oak 48,113 



Sparganium 117, 185 



Spartina 132, 195 



stricta, var. glabra 13 



Spatter-Dock 63 



Spear-Grass 132 



Spearmint 104 



Spearwort 62 



Species, Number of, to each genus 34 



and varieties, taken as the basis of 



statistical comparisons 34 



Species-covers 226 



Species-strips for labeling cases for dupli- 

 cates 231 



Specimens, Importance of making good 215 



Specularia 94, 170 



Speedwell 102 



Spergula arvensis 12 



Spergularia 51, 69 



Sphagnum 140, 201 



Spice-bush 49, 109 



Spiderwort 124 



Family 124 



Spigelia Marilandica 12 



Spike-Grass 134 



Spikenard 83 



Spike-Rush 125 



Spiny Clotbur 90 



Spiny-leaved Sow-Thistle 93 



Spiraea 77, 158 



Aruncus 20 



Spiranthes 119, 186 



latifoUa 22 



Spleenwort 138 



Spotted Cowhane 82 



CranesbiU 71 



Spurge 110 



Touch-me-not 71 



Wintergreen 95 



Spreading Aster 88 



Spring Avens 77 



Beauty 69 



Cress 65 



Iris 121 



Scorpion-Grass 99 



Spruce 137 



Spurge 110 



Family 110 



Spurrey 69 



Spy-Glass, Uses for the, in collecting 215 



Sqnaw Huckleberry 94 



Squaw-root 103 



Squaw-weed 92 



Stachys 106, 179 



Staff-Tree Family 72 



Stagger-bush 49, Pj 



