1S2 



INDEX TO THE SPECIES. 



PAGE. 



Polygonum — 



EMEESUM 44 



Engelmanni 124 



ERECTUM 110 



erectum 52, 114 



EXSERTUM 112 



FEREUGINEUM 48 



filiforme 122 



fluitans 40 



FUSIFORME 70 



geniculatmn 160 



glabrum 46 



glaucum 100 



Greenei 144 



gummiferum 48 



Hartwrightii 42 



hirsutum 82 



hirsidttm var. dasyphyllum 82 



HIRSUTUM GLABRESCBNS 82 



HISPIDUM 50 



HYDROPIPEROIDES 80 



hydropiperoides 88 



HYDROPIPEROIDES MaCOUNII 81 



hydropiperoides var. strigosum 81 



hydropiperoides var. virgatum 80 



Hydropipee 84 



Hydropiper 86 



imhricatum 138 



incarnatum 56 



incarnatum 54 



intermedium. 132 



islandioum 108 



ELelloggii 134 



lapathifolium 54 



lapathijolium 56 



LAPATHIFOLIUM INOAJSTUM 64 



lapathifolium var. incarnatum 56 



LAPATHIFOLIUM NODOSUM 55 



Uiiifolium 122 



LITTOEALE 102 



PAGE. 



Polygonum — 



LITTOEALE SiTOHENSE 102 



LONGISTYLUM 62 



Ludovidanum 72 



marinum 100 



MARITIMUM 100 



inaritimum 88 



Meisneeianum Bbyrichianum 1 60 



Mexicanum 60 



microspermum 124 



minimum • 1 28 



minus 86 



mite 80 



Muhlenhergii 44 



multangulare 160 



mutieum 92 



Newbereyi 36 



nodosum 55 



nodosum var. incarnatum 56 



nuttallii 132 



Opelousanum 78 



oeientale 90 



Paeonychia 94 



Pareyi 146 



Pennsylvanicum 64 



Pennsylvanicum 54, 60 



Pennsylvanicum var. densiflorum 46 



Peesicaeia 66 



Persicaria var. vernieosum 66 



Persicaria var. vulgare 66 



PERSICAEIOIDES 68 



PHYTOLACCABFOLIUM 34 



POLYGALOIDES 136 



polymorphum .' 31 



polymorphum var. alpinum 32 



polymorphum var. foliosum 32 



polymorphum var . lapathifolium 33 



poetoeicense 46 



Peinglei 58 



punctatum 88 



