P. iiage. 
Phryma 20 
59 
Phyllanlhus . 
88 
Phy'salis 0 jiW 
PhysarumT 
23 
107 
Phytolacca io i, i. 
47 
Pinkneya 
22 
Pinguicula 
3 
Pinus ocf 
Pistia • •• 
* 93 
64 
Pisum 
68 
Planera 
100 
Planta'go 
Pla'tanus 
Pleea ^ 
15 
92 
42 
Poa t/, 6i . 
10 
Podalyri.a /5 
42 
Pndophyllum 
53 
Prdosie'mum $^\ 
86 
Polemonium 
21 
Polycarpon 
14 
Poly'gala /22 
66 
Polygonella 
41 
Poly'gonum /-4 
40 
Polymnia 27 
Polypodium ^ 
83 
102 
Polypremum 
15 
Polytrichum 
103 
Pontederia /w/ 
33 
Po'pulus 
97 
Porcelia 
55 
Porina 
105 
Portulaca' /Si 
48 
Potanjoge'ton 3.i<f» 
17 
Potentilla )y 
Potebium ' 
52 
93 
Pothos 
16 
Prenanthes jz 
72 
Pribnula 
19 
Prinus /2 
36 
Proserpinaca 
14 
Prunella 
59 
Prunus /0 
49 
Psilotum 
102 
Psoralea Z2- 
70 
Pte!e'a 9^ 
16 
Pterigonium 
103 
Pteris 
102 
Pulmonaria /OS 
18 
Punica 
49 
Py'rola 
44 
Pyrularia 
101 
Pyrus 1/ 
50 
Pyxidanthe'ra 
24 
Q. 
Quassia 
43 
Quercus 2^ 
91 
Que r ia /o^ /if 2 ^ 
14 
THE GENERA. 
R. 
page. 
Racodium 
108 
Ramalina 
106 
Ranunculus 
Raphanus !: ^ 
56 
63 
Rhamnus 
24 
Rhapis 
100 
Rhexia 
39 
Rhinanthus 
59 
Rhizomorpha 
108 
Rhododendron 3^3 43 
Rhodora 
43 
Rhus 
Ribes * 
Riccia tJINf* 
51 
25 
104 
Ri'cinus 
94 
Rivina 
17 
Rob^nia ^«3 
68 
Rosa f 7‘ 
51 
Rottboella 
13 
Rubia . 
15 
Rubus // . 
Rudbeckia 2A 
51 
82 
Ruellia 20 \\ 
61 
Rumex 
37 
Ruppia , ^ 
17 
S.. 
Saccharum S SS 
12 
Sagi'na 
18 
Sagittaria 
Salieornia ^ 
90 
1 
Salix t% 
95 
SaPsola JJT 
28 
Salvia 
3 
Sambu'cus 
32 
Sa'molus ^7 
22 
Sanguinaria /S' 
53 
Sanguisorba 
16 
Sanicula // 
30 
SantOiina 
75 
Sapindus y 
Saponaria /4? 
4 
45 
Sarothra /Z 
32 
Sarracenia /S 
53 
Satureja 
57 
Satyrium 
84 
Saururus l 
38 
Saxi'lVaga / q 
45 
Scandix 
31 
Scheuchzeria 
37 
Schisandra 
89 
Schizsea 
102 
Schoenus -z^ 
Schollera 
5, 6 
5 
Schrankia 2\ 
100 
Schwalbea 
59 
Scirpus 
6,7 
Scie ran thus 
45 
Scleria ZK 
88 
Scleroderma 
107» 
117 
iiage. 
Sclerotium io 6 
Scolopendrium 102 
Scorzonera ^^6 72 
Scrophul4;3^"2^ 61 
Scutellaria ^ q 58 
Seclum ^ 46 
Se'li'iium . sg 
Senecio 75 
Sennebiera ZJ 62 
Serpicula. gg 
Se'samuin 6 i 
Sesbahia 68 
Sesuviiim ’ 50 
Si'cyos 'l\ , 95 
Sida 2Z 64 
Siegesbeckia 81 
Sile'ne y/f 5 45 
Silphium 2/ 83 
Siiia'pis / 63 
Sison , ' 30 
Sistotre'nna 108 
Sisym'brium 63 
Sisyrin'chium 64 
Sium i\ ' 50 
Smilax 97 
Smyrnium I/ 31 
Sola'num 23 
Solidago ^2S, 79 
Sonchus 2 ^ 72 
Sorbus 50 
Sparganium ;; ly' 87 
Spartina ^ ' 7 
Sper'gula 47 
Spergulastrum 46 
Spermacoce f/ 14 
Sphairia ' 106 
Sphagnum 103 
Spigelia 20 
Spiianthus 73 
Spiloip^ 105 
Spiraea >7* ** 51 
Splachnum 103 
Stachys 7^ 57 
S!;aphyle'a /2 32 
Sta'tice 33 
Stellaria Zo 45 
Stemonitis 107 
Steriocaulon 106 
Sticta 105 
Scilbospora ' 106 
Stillingia^ 94 
Stipa •^4' 12 
Stipulicida 5 
Stokesia 73 
Streptopus 35 
Stuartia 2Z 65 
Stylosanthes 2 Z 68^. 
Styrax 44 '' 
Swertia 29 
^wie^-coia 43 
