INDEX TO THE GENERA. 
241 
Lecliea 
- 
75 
Proserpinaca 
76 
Lachnanthes 
22 
JPepHs 
17 
Leptanthus 
- 
23, 24 
Plenranthus 
29 
Ludwigia 
85, 158 
Phalaris 
44 
Liidwigia - 
- 
86 
Panicum 
52 
.liithospermum 
. 101 
Paspalnm 
52 
Lithospermum 
- 
103 
Paspaliis 
52 
Lrsimachia 
- 104 
Poa 
- 63, 64 
Linum 
- 
157 
Plantago 
88 
JLeantice 
- 160 
Pothos 
92 
Lilium 
- 
165 
Potamogeton 
95 
Laurus 
. 192 
Purshia 
- 102 
Lythriim 
223 
Phlox 
107 
Lythrum 
- 224 
Polemonium - 
- 108 
M. 
Physalis - 
110 
>fonarda 
- 
13 
Panax * 
- 136 
Mariscus 
- 
30 
Pastinaca 
140 
Muhlenbergia 
- 
39 
Prinos 
- 161 
Mollugo 
- 
73 
Pontederia 
163 
J\fariscus 
- 
- 31 
Polygonatum - 
- 168 
Mitchella 
- 
84 
Polygonum 
186 
Myosotis 
. 
100 
Pyrola 
- 201 
Menyanthes 
103 
Pyrola 
- 203, 204 
Myrrh is 
141 
Podalyria 
- 206 
J\Iaianthemum 
. 
167 
Penthorum 
218 
Melanthium - 
- 172 
Phylolacca 
- 219 
JHelanthium 
- 
173, 174 
Prunus 
222 
J\fedeola 
- 175 
Pyrus - 
. 227 
JVTattuschkea 
- 
177 
Pyrus 
228 
Monotropa 
- 200 
Potentilla 
- 235 
JVIonotropa 
- 
200 
Q. 
Mitella 
- 208 
Queria 
73 
mMjespilus 
- 
227 
R, 
N. 
Rhyncosphora 
25 
Nicandra 
- Ill 
Rhus 
153 
JSTectris 
- 
172 
Rumex 
176 
0. 
Rhexia - 
180 
Obolaria 
90 
Rosa 
230 
Onosmodium 
- 
103 
Rubus 
232 
CEnanthe 
- 142 
S. 
Ornithogallum 
- 
164 
Salvia 
14 
Orontium 
- 168 
Sisyrinchium 
22 
(Enothera 
- 
181 
Schollera 
24 
Oxycoccos 
- 184 
Scirpus 
31 
Oxalis 
- 
217 
Stipa 
53 
P. 
Schoenus 
25, 29, 30 
Phleum 
- 46 
Scirpus 
29, 30, 36 
Panicum - 
- 
47 
Syntherisma 
52 
Pennisetum 
51 
Spermacoce - 
83 
Faspalum 
- 
52 
Sagina 
89 
Poa 
58 
Symplocarpus 
91 
22 
