654 



Index 



Pinus, 43. 

 banksiana, 206. 

 divaricata, 206. 

 echinata, 206. 



laricio, 308, 309, 310, 339, 353. 

 mitis, 206. 



silvestris, 308, 309, 310, 339, 353. 

 sp., 309, 310, 353- 

 strobus, 206. 308, 309, 310, 313, 314, 



334, 335, 339; 353- 

 Pinweed, 362. 



Pisidium, 517, 531, 532, 536. 

 Plagiola elegans, 536. 



securis, 536. 

 Planarians, 506, 517. 525, 532, 535. 

 Planer-tree, 208. 

 Planera aquatica, 208. 

 Planorbis, 515, 517, 520, 531. 



parvus, 504, 536. 



trivolyis, 504, 505, 521, 525, 531, 536. 

 Plantaginaceae, 167, 366. 607. 

 Plantago major, 305, 311, 314. 366, 607. 



rugelii, "JT, 167, 366, 607. 

 Plantain, Common, 366. 



Indian, 368. 



See also Water-plantain. 

 Platanus occidentalis, 208. 

 Platynus, 18. 



Pleurocera, 517, 528, 532, 53'!. 

 Pleuroxus, 408. 

 Plum, 143, 158, 205. 



Canada, 209. 



Chickasaw, 209. 



Wild Garden, 209. 

 Plumatella, 528. 



repens, 524, 531, 532. 

 Poa compressa. 128, 149, 268, 280, 290. 

 295, 300, 303, 304, 308, 309, 311, 314, 

 318, 332, 335. 338. 343- 355, 595. 



pratensis, 56, yj. 60, 64, 67. 75, 76, 'j'j. 

 no, 124, 128, 135. 145, 149, 272, 290, 

 305, 311, 314. 332. 338, 355- 



triflora, 578, 595. 

 PoacefE, 354. 



Podophyllum peltatum. 339. 359. 

 Pogonia ophioglossoides. ZiZ^ 357- 

 Polanisia graveolens, "/(>, 77, 94, 128, 156, 



3(19- 

 Polemoniaceas, 164, 364. 

 Polistes gallica. 467. 

 Polygala incarnata, 6t, 62, 159. 



polygama. 60. 65, 67. 81, 82, 119. 127. 

 159. 2,2,9', 361. 



sanguinoa, 113, 114. 115, 139. 314, t,2i2- 

 361. 



verticillata, 66, 71, 81, 160 314. 338. 

 361. 



Polygalacese, 159, 361. 

 Polygonacese, 153, 358, 599. 

 Polygonatum biflorum, 343, 357. 



commutatum, 108, 128, 134, 136, 137, 

 138, 143. 151. 310. 313, 342. 

 Polygonella articulata, 94, 107, 127, 154. 

 Polygonum, 584, 585, 588. 



acre, no, 272, ^Z^^ (see Errata), 2>22,< 

 359. 599. 



amphibium hartwrightii, 321, 2,22,, 324, 

 331. 358. 



aviculare, 77, 154, 2,^% 599. 



erectum, y-/, 154. 



hydropiper, 599. 



hydropiperoides, 323, 324, 339, 359, 

 577. 578. 587. 600. 



incarnatum, 358. 



lapathifolium, 272, 291, 358, 599. 



muhlenbergii. 2,^2,. 324. 358, 577, 578, 

 582, 584, 586, 588, 589, 590. 591, 599. 



orientale, 345, 369. 



pennsylvanicum, 359, 599. 



persicaria, 272, 315, 359, 589, 599- 



sagittatum, 600. 



scandens, 600. 



tenue, 61. 62, 66, 72, y6, 82, 105, 154, 

 301, 303. 358. 

 Polygra multilineata, 521. 

 Polyodon spathula, 405. 

 Polypodiacese, 146, 353, 593. 

 Polytrichum, 46, 113, 114, 115, T16, 147. 



juniperinum, 112, 115, 317, t,S2,- 



sp.. 334- 

 Pomoxis sparoides, 411. 534. 

 Pondweed, 354, 388, 504. 

 Pontederia, 387, 517. 



cordata, 321, 356. 

 Pontederiacese, 356. 

 Poplar, 207. 



Black, 204. 



Lombardy, 204. 



North Carolina, 231. 



White. 204. 



Yellow, 2g8. 

 Poplars, 204. 



Populus, 289, 290, 291, 325, 340, 341, 342, 

 343. 344. 345, 347- 



alba, 77. 152, 204. 



candicans, 278, 283, 286, 287, 308, 358. 



deltoides, 107, 108, 109. 113. 115, 140, 

 152, 207. 271, 272, 274, 276, 277, 279, 

 283, 287, 290, 300, 308, 314, 315, 318, 

 339. 341. 358. 599- 



grandidentata. 128, 134, 132, 207, 399. 



heterophylla, 207. 



monilifera, 207. 



