No. 14.] 



FLOWERING PLANTS AND FERNS. 



Polygonaceae 157, 437, 439 

 Polygonatum 123 

 biflorum 123 

 comrautatum 123 

 giganteum 123 

 Polygonella 164 

 articulata 164 

 Polygonum 159, 441 

 acre 162 



var. leptostachyum 162 

 araphibium 161 

 var. Hartwrightii 161 

 " terrestre 161 

 arjfolium 163 

 aviculare 160 

 var. littorale 160 

 " vegetum 160 

 Careyi 161 

 cilinode 163 

 var. hreve 163 

 " erectum 163 

 Convolvulus 163 

 cristatum 164 

 cuspidatum 164, 420 

 dumetorum 163 

 forma cristatum 164 

 var. scandens 163 

 emersum 161 

 erectum 160 

 exsertum 159 

 Hartwrightii 161 

 Hydropiper 162 

 hydropiperoides 162 

 incarnatum 160 

 lapathi folium 160 

 var. incarnatum 160 

 " nodosum 420 

 littorale 160 

 maritimum 426 

 Muhlenbergii 161 

 orientale 162 

 pennsylvanicum 161 

 Persicaria 162 

 proHficum 159 

 punctatum 162 



var. leptostachyum 162 

 ramosissimum 160 



Polygonum 



forma atlanticum i6o 

 var. proliUcum 159 

 sachalinense 164 

 sagittatum 163 

 scandens 163 

 tenue 160 

 virginianum 163 

 Zuccarinii 164 

 Polymnia 390 



canadensis 390 

 Polypodiaceae 17, 435 

 Polypodium 17 

 vulgare 17 

 var. cambricum 17 

 Polypody 17 

 Polypogon 6s 



monspeliensis 65, 431 

 Polystichum 21 

 acrostichoides 21 

 var. incisum 21 

 " Schweinitzii 21 

 Braunii 424 

 Pond Lily 183 

 Pondweed 40 

 Horned 44 

 Pondweed Family 40 

 Pontederia 113 

 cordata 113 

 var. angustifolia 113 

 Pontederiaceae 113, 436 

 Poor Annie 118 

 Poor Man's Pepper 201 

 Poor Man's Weather Glass 317 

 Poor Robin 178 

 Poor Robin's Plantain 414 

 Poplar 141 

 Balsam 142 

 Black 143 

 Downy 142 

 Hickory 194 

 Lombardy 143 

 Necklace 142 

 Silver-leaf 141 

 Swamp 142 

 Trembling 141 

 Tulip 194 



