INDEX. 



451 



l'olygonatum 



Polygouum 



Polypetalae 



Polypckiium 



Polypody 



Polypteria 



Polytaenia 



Pondweed 



Pondweed Family 



Poplar 



Poppy 



Poppy Family 



Populus 



Portulaca 



Portulacaceae 



Potaniogeton 



Potentilla 



Poterium 



Prairie Clover 



Prenanthes 



Prickly Poppy 



Primula 



Primulacese 



Primrose 



Primrose Family 



Prosartes 



Pruuus 



Pseudotsuga 



Psoralea 



Ptelea 



Preri lophyta 



Pterin 



Pterospora 



Puecoon 



Pulse Family 



Pumpkin 



Purshia 



Purslane 



Purslane Family 



Putty-root 



Pycnanthemum 



Pyrola 



Pyroliueas 



Pyrrhopappus 



Pyrus 



Quack Grass 

 Quaking Asp 

 Quercus 



Qui 11 wort 

 Quillwort Family 

 Quitch Grass 



Ragweed 



Ranuneulaceae 



Ranunculus 



Raspberry 



Rattlesnake Plantain 



Rattle- weed 



Rav less Golden-rod 



Red-top 



Reed 



Reed Bent-Grass 



Reed Meadow-Grass 



Rhauinacete 



Rhanmus 



R liuanthus 



Rliizocarpeas 



llh us 



Ribes 



Ribwort 



Riddellia 



Robinia 



Rock Brake 



Rock Cres3 



Roman Wormwood 



Kosa 



346, 350 

 313, 318 



439 



439 



137, 191 



114, 121 



362 

 861 



33:) 



13 



13 



334,339 



37 



37 



362 



75,83 



76,87 



53 



141, 220 



13 



232, 233 



232 



233 



232 



347. 353 



74, 76 



429, « i 



50,56 



45 



431 



432, 442 



227, 231 



263 



50 



108 



75,80 



37 



37 



342 



292, 295 



227, 230 



227 



141,223 



426 

 339 

 331,333 

 435 

 434 

 426 



180 



2 



2,6 



79 

 343 



60 

 149 

 412 

 418 

 413 

 423 



46 



46 

 273, 288 



90,96 



299 



137, 191 



51,59 



441 



19 



181 



76,87 



I Rosace® 

 Etase 



Rose Family 

 Rosin-weed 

 Rubiacea 

 Rubus 

 Rudbeckia 

 Rue Family 

 Kuinex 

 Rush 



Rush Family 

 Rush Grass 

 Rutacese 



i Sage 



Rage brush 



Sagina 



Sagittaria 



SaOcineas 

 i Salicornia 



Salix 



Salmon-berry 



Salvia 



Sanibucus 



Sainolus 



Samp lire 



S md Grass 



Sandwort 



Sanicle 



Sanicula 



Santalacess 



Sapiudaceje 



Sarcobatus 



Saxifraga 



Saxifragaceae 



Saxifrage 



Saxifrage Family 



Scbedonnardus 



Scheuchzeria 



Schrankia 



Scirpus 



Scrophularia 



Scrophulariaceae 



Scouring Rush 



Scutellaria 



Sea Blite 



Sea Milkwort 



Sea Purslane 



Sedge 



Sedge Family 



Sedum 



Selaginella 



Selagiaellae 



Senecio 



Senecionideae 



Seuua 



Seusitive Briar 



Service-berry 



Sesuvium 



Setaria 



Shave Grass 



Shepherdia 



Shepherd's Purse 



Shield Fern 



Shin-leaf 



Shooting-Star 



Shrubby Trefoil 



Sibbaldia 



Sidalcea 



Silene 



Silkweed 



Silphium 



Sisymbrium 



Sisyrinchium 



Sium 



Skullcap 



Slender Grass 



74 



87 



74 



178 



126 



75, 79 



135, 182 



45 



313, 317 



357 



856 



410 



45 



296 



199 



31,36 



361 



331 



306, 312 



334 



79 



293, 296 



123, 124 



232, 235 



312 



418 



34 



114 



113, 114 



323 



48 



306, 312 



90 



89 



90 



89 



400, 416 



362, 364 



51,74 



365, 366 



271, 273 



271 



445 



293, 298 



312 



235 



112 



370 



365 



98 



435 



435 



140, 206 



130, 139 



73 



74 



89 



112 



398, 404 



446 



321, 322 



25 



443 



230 



232 



45 



75, 81 



41 



31 



239 



133, 178 



16,23 



344, 345 



113, 116 



29« 



418 



I Smelowskia 



16,24 



Sinilacese 



354 



Smilacina 



846, 350 



Smilaz 



355 



Smilax Family 



354 



Sneeze-weed 



196 



Sno w berry 



125 



Soapberry Family 



48 



SolanaeesB 



267 



Solan urn 



267, 268 



Solidago 



132, 152 



Solomon's Seal 



850 



Sonchus 



141,223 



Sophora 



50, 52 



Sorrel 



317 



Sow Thistle 



223 



Spanish Bayonet 



351 



Spanish Needles 



190 



Sparganium 



359 



Spartina 



398, 405 



Spatter-Dock 



12 



Spear Grass 



422 



Specularia 



225 



Speedwell 



282 



Speirodela 



360 



Sphseralcea 



41,42 



Spider wort 



355 



Spider wort Family 



355 



Spike Grass 



420 



Spikenard 



122 



Spike Kush 



368 



Spiraea 



75, 77 



Spiranthes 



340,343 



Spleen wort 



442 



Sporo bolus 



399, 410 



Spraguea 



37, 39 



Spring Beauty 



33 



Spruce 



431 



Spurge Family 



324 



Squirrel-tail Grass 



427 



Stachys 



293, 299 



Staff-tree Family 



46 



Stanleys 



15,22 



Star-grass 



345 



Starwort 



158 



Steironema 



232, 235 



Stellaria 



31,33 



Stenosiphon 



101, 105 



Stephanomeria 



140, 215 



Stickseed 



258 



Stick-tight 



189 



Stipa 



399, 407 



St. John's-wort 



40 



St. John\s-wort Family 40 



Stonecrop 



98 



Storksbill 



44 



Strawberry 



82 



Strawberry Blite 



309 



Streptanthus 



15.20 



Streptopus 



347. 352 



Suaeda 



306. 312 



Subularia 



16, 25 



Suckleya 



306, 311 



Sumach 



49 



Sunflower 



185 



Sweet Cicely 



116 



Sweet Coltsfoot 



203 



Swertia 



243. 246 



Sympnoricarpos 



123. 125 



Synthyris 



272, 281 



Syringa 



95 



Talinum 



37 



Tanacetum 



139, 199 



Tansy 



199 



Taraxacum 



141, 222 



Tare 



72 



