PLANTS OF IOWA 



259 



Prairie-clover 183 



White 183 



Tooth-leaved 197 



Purple 183 



Silky 183 



Leafy 183 



Prairie Bird's-foot Trefoil 182 



Prairie False Boneset 224 



Prairie Cat 's-f oot 229 



Prairie Dock 230 



Prairie Turnip 182 



Prairie Nine Bark 176 



Puff-balls 75 



Punctate Wolffia 147 



Purslane 163 



Purslane 164 



Purple Virgin's Bower 168 



Purple Rocket 171 



Purple Thorn-apple 213 



Purple Bugle-weed 211 



Purple Lion's Heart 209 



Putty Root 154 



Quack Grass 139 



Quamasia 150 



Queen-of-the-Prairie 178 



Quercus 156 



Racemed Bouteloua 134 



Ragweed 223 



Great 223 



Entire-leaved 223 



Ragweed 223 



Western 223 



Raspberry 176 



Dwarf 176 



Wild Red 176 



Black 176 



Sand 176 



Millspaugh 's 176 



Rattle-box 181 



Rattlesnake-root 223 



Red Baneberry 166 



Red-berried Elder 218 



Red Bud 181 



Red Cedar 125 



Red Mulberry 158 



Red-seeded Dandelion 222 



Red-top 133 



Red Turtle-head 213 



Reed 135 



Reed Canary Grass 131 



Reed-grass 133 



Wood 133 



Macoun 's 133 



Long-leaved 133 



Bog 133 



Reed Meadow-grass 137 



Rib-grass 217 



Rice Cut-grass 217 



Richweed 158 



Robin 's Plantain 229 



Rock-cress 173 



Lyre-leaved 17:: 



Toothed 173 



Hairy 173 



Smooth 173 



Purple 173 



Rock-rose 194 



Rock Sandwort 165 



Rose Mildew 28 



Rose 176 



Rose 178 



Climbing 178 



Smooth Wild 178 



Prickly 179 



Wood's 179 



Pasture 179 



Arkansas 179 



Rotala 195 



Rot and Blight of Plum and 



Peach 49 



Rough Hair-grass 133 



Rough-leaved Cornel 200 



Roughish Meadow-grass 136 



Rough Hedge Nettle 210 



Rough Ox-eye 230 



Rough Pennyroyal 211 



Round-leaf Squaw-weed 235 



Rush 148 



Common 148 



Baltic 148 



Slender 148 



Vasey's 148 



Grass Leaved 148 



Knotted 148 



Torrey's 148 



Carolina 148 



Canada 148 



Sharp Fruited 148 



Hairy Wood 149 



Common Wood 149 



Rushes 124 



Great Scouring 124 



Scouring 124 



Prairie Scouring 124 



Rush-like Lygodesmia 222 



Rush-grass 132 



Rough 132 



Long-leaved 132 



Sheathed 133 



Small 133 



Prairie 133 



Rusts 55 



Russian Thistle 162 



Rue 187 



Rue-anemone 167 



Running Pine 124 



Rye-grass 138 



Saltwort 162 



