INDEX. 



345 



Pitch Pine, 323. 



PLANTAGINACE^; (Plantain Fami- 

 ly), 280. 



Plantago, 280. 



Plum, 221. 



PLUMBAGINACE^: (Leadwort Fam- 

 ily), 255. 



Poa, 318. 



Podophyllum, 196. 



Pogonia, 297. 



Poison Hemlock, 236. 



Poison Ivy, 216. 



Poison Oak, 216. 



Poison Sumach, 215. 



Polanisia, 202. 



Polanisia Graveolens, 202. 



POLEMONIACE^:, 26l. 



Polemonium, 262. 



POLYGALACE^E (Milkwort Fami- 

 ly), 204. 



Poly gala, 204. 



POLYGONACE^E (Buckwheat Fami- 

 ly), 283. 



Polygonatum, 308. 



Polygonum, 284. 



Pontedeiia, 310. 



PONTEDERIACE^: (Pickerel - weed 

 Family), 310. 



Populus, 295. 



Portulaca, 208. 



PORTULACACE^E (Purslane Fami- 

 ly), 207. 



Potato, 266. 



Potentilla, 222. 



Potomageton, 302. 



Poverty Grass, 318. 



Pragmites, 319. 



Prairie Rose, 223. 



Prickly Ash, 212. 



Prickly Bellflower, 251. 



Prickly Pear, 232. 



Prickly Poppy, 197. 



Prim, 257. 



PRIMULACE/E (Primrose Family), 

 256. 



Prince's Feather, 284. 



Prince's Pine, 255. 



Proserpinaca, 228. 



Prunus, 220. 



Pumpkin, 232. 



Purple Candy-tuft, 200. 



Purple Fleabane, 245. 



Purple Gerardia, 271. 



Purple Petunia, 265, 

 Purple Trillium, 305. 

 Purslane, 208. 

 PycnantJiemum, 277. 

 Pytus, 224. 



Quamoclit, 264. 

 Quercus, 292* 

 Quince, 224. 



Rabbit's-foot Clover, 218. 

 RANUNCULACE^; (Crowfoot Fami- 

 ly), 191. 



Ranunculus, 192. 

 RapJianus, 202. 

 Raspberry, 223. 

 Rattlesnake Plantain, 298. 

 Red Ash, 258. 

 Red Baneberry, 194. 

 Red-berried Elder, 239. 

 Red Cedar, 324. 

 Red Clover, 218. 

 Red Corn Spurry, 207. 

 Red Lily, 306. 

 Red Mulberry, 289. 

 Red Oak, 292. 

 Red Pepper, 266. 

 Red Pine, 323. 

 Red-top, 317. 

 Reseda, 203. 

 RESEDACE^E (Mignonette Family), 



202. 



RHAMNACE^E, 213. 



Rhamnus, 213. 



Rheum, 283. 



Rhexia, 229. 



Rhus, 215. 



Rhyncospora, 313. 



Ribes, 226. 



Ribwort, 281. 



Ricinus, 288. 



Rigid Sedge, 314. 



Robinia, 2 1 8. 



Rocket, 201. 



Rock Rose, 204. 



Roman Wormwood, 249. 



Rosa, 223. 



ROSACE/E (Rose Family), 220. 



Rose Sedge, 314. 



Rough Aster, 244. 



Rough Cleavers, 240. 



Rough Hawk weed, 250. 



Round-leaved Pyrola, 255. 



