Seles Prickly. = 2... -'. 194 
Spinesa ses 2%. 194 
Silene antirrhina.. 85 
Sefer 85 
stellata..........-. 87 
Vag tot Sse See 86 
Silky Thimbleweed.. .104 
Silphium integrifolium 
oie ko See oe ie 360 
laciniatum........ 359 
perfoliatum....... 360 
terebinthinaceum.. eer 
Silver Weed......... 52 
Silver-leaved Nightshade. 
fine? wieuw © * Os 2 © 0 
officinale.......... 128 
Sisyrinchium ers. 66 
angustifolium. . 66 
gramineum........ 66 
Sium cicutaefolium...220 
Skullcap, Heart-leaved 
Biers ss 2, 276 
Mad-dog....::-.-.- 276 
WEIESHOeP ee cis cs >. - 275 
SHOWN os =. 3 1-": 276 
Skunk Cabbage...... 42 
Sky-blue Aster...... 350 
Sleepy Catchfly...... 85 
Slender Gerardia..... 312 
Small Enchanter’s 
Nightshade. ...213 
Solomon's Seal..... 59 
White Dogwood. . .226 
Lady’s Slipper... 68 
Smaller Yellow Lady’ s 
Slipper....... 68 
Small-flowered eat 
97 
Phacelia. Bes Be arom us ‘258 
SR ALI TERET yoo us's $6 nie: 90. 
MeEEDeia cles cis «55s 270 
Smartweed, Water... 79 
Smilacina racemosa.. 57 
SteHataA ome ee = © 58 
tee Olt ee sees aes 58 
Smilax herbacea..... 63 
rotunditolia. 22... .- 63 
SMOKE SEECE. yo es 184 
Smooth Aster........352 
Beardtongue...... 305 
False Foxglove..... 311 
(Pie. ose se 252 
Rocki@ress, 5 5. 135 
Raeiiae os. se 316 
Sumac en..:s2 184 
Sweet Cicely...... 218 
White Lettuce..... 391 
Yellow Violet. . . 203 
Smooth-leaf Honeysuckle 
321 
Button. ee Pegs 215, 343 
Sene .180 
Short otvied Black.216 
Wireinidoss. fess. 7 
AUT ea ne ae 341 
Sneezeweed, Common.375 
Five-leaved....... 3 
Purple-head....... 374 
~] 
rs 
INDEX 
Snow Trillium....... 61 
SOAPBERRY FAMILY. .190 
Soapwort.. 3. == 88 
Soft Agrimony.. -155 
Soft-hairy False Gromwell 
266 
SOLANACEAE...... 293 
Solanum carolinense. .295 
Duleamara...: .ve-= 293 
elaeagnifolium..... 295 
THPTUIN: Sess = te 294 
TOSEFAGHM:. | o.ss . 295 
Solidago altissima... .348 
Canadgensis;,... + 4-1 349 
graminifolia....... 348 
JUNCEAL. co eee 347 
latifoliag. soc 347 
Nemorahs... a2. 348 
FIPTAA | ese tee ce 349 
Solomon’s Seal, False. 58 
reat. Stare 
Smallte ee ekie 9 
Three-leaved False 
Sonchus asper....... 388 
oleraceuS. 205 2.22: 388 
Sorrel, Creeping Yellow 
Wood..... 175 
Great Yellow Wood.176 
Rady sites ee. aes 176 
Violet Wood....... 175 
Yellow Wood...... 176 
Sour Grass......2.-- 176 
Southern Black Haw.. ae 
Crate. Slee 14 
Loosestrife........ mt 
Tickseed Sunflower.372 
Sow Thistle, Common.388 
Spiny-leaved. . . .388 
Spanish Bayonet..... 62 
Weedlest. (7c... 372 
Spatterdock......... 91 
Spearmint. . he eles AN i f 
Spearwort, Oblong- 
leaved 180. -5- 
Specularia perfoliata .328 
Speedwell, Corn...... 310 
Pursiane. 2002 oes 310. 
Thyme-leaved...+4 309 
Spice Bush.......<..418 
SPIDERWORT......--- 44 
PAMICY 2. nor. oe 44 
Short-stemmed . 44 
Spigelia marilandica. 234 
Spiked Lobelia. . 2332 
Loosestrife® © o-j2tae 206 
Spikenard, False..... 57 
Spiny-leaved Sow ere 
Spiraea prunifolia. . nr 
salicifolia.. .2% =-<-- 146 
tomentosa... 5 =... 146 
Spotted Touch-me-not 
cu Mieaee 191 
Spreading Dogbane. .240 
SPULEE 7 jcuak ee 182 
Spring AVvensi-)..- 2 =: 153 
Beauty. 24. 2500 t 89 
Bead leaved.. 89 
Gress. oe "134 
P (Lopes eae 134 
Harbinger of...... 219 
403 
SPURGE FamMILy......181 
Flowering.......-. 182 
Spreading......... 182 
Squaw Weed......-. 381 
Squirrel Corn.+3-22 = 122 
Stachys cordata.. . 284 
DAlustris..2-+ aes 284 
STAFF FREE . ee 188 
FPAMIEY ) P5124 187 
Vines S.J. > a tere 188 
Stag Bush! 47 meee 323 
Stalked Ruellia...... 316 
Water Horehound. .290 
Staphylea trifolia. . . .189 
STAPHYLEACEAE. .189 
Star, Cylindric Blazing 
ME li AL 343 
Grass. . .....62, 64 
Large Blazing . ha fie 343 
Marsh Blazing..... 344 
Prairie Blazing... ..344 
Shooting = 5-- > er 233 
Starry Campion..... 87 
Steeple Bush........ 146 
Steironema ciliatum. .232 
intermedium. . TA 
lanceolatum....... 231 
quadriflorum...... 232 
fadicans' >. a. - pes 231 
Stellaria media...... 82 
Stemless Lady’s baer 
Stickseed, Hairy Me 262 
Sticktights 32. emcee 372 
Stiff Goldenrod...... 349 
Rosinweed......-. 360 
Tickseed 3.f20: sia 2 371 
Water Crowfoot... 96 
Stonecrop:: 222. -4-- 138 
Diteh =... 40-2 sos 138 
Showy: . 6 --sge e 138 
Stoneroot]... -. aan 292 
Stoneseed: : |...) Shee 265 
Strawberry Bush, 
Runnine. - oe 187 
Ba ee ee 150 
Waid = 2) Sener 150 
Yellow. . 152 
Striped White Violet . 202 
Strophostyles helvola.174 
umbellata. ©.) 2. - 174 
en ae estes m 
Sumach, Poison...... ae 
Shining -: ste ie 84 
Smootis .-.oss20se 184 
Sundrops, Common. .211 
Meadow *..).\- nat 211 
Sunflower, Common. .368 
Crownbeard....... 37 
Falsexetre. 362. S15 
Pale?.n 260. 369 
Prairie. ee 368 
Southern Tickseed..372 
Swamper: see 375 
Tickseed! ae... 372 
Western Tickseed. .372 
Susan, Black-eyed.. . .364 
Brown-eyed....... 364 
Swamp Betony...... 313 
