30 



Leersia 



Lemna, 



Leontodon, 



Leonurus, 



Lepidium, 



Lespedeza, 



Leucanthemum, . 



Leucothoe, 



Liatris 



Lilium, 



Limnanthemum, . 



Linaria, 12, 



Linum 



Liparis, 



Lobelia, ..19, 20, 



Ludwigia, 



Lupinus, 



Luzula 



Lycopodium, . . . 



Lycopus, 



Lysimachia, . . 15, 



Lythrum, 



Malva 9, 



Marchantia, 



Maruta, 



Medeola 



Medicago, 



Melampyrum, . . . 



Melilotus, 



Mentha, 



Microstylis 



Mikania, 



Mimulus, 



MitcheUa 



Mcehringia, 



Mollugo, 



Monotropa, 



Muhlenbergia, 22, 



Myosotis 10, 



Myrica, 



Nabalus, 



Nemopanthes, . . . 



Nepeta 9, 



Nesrea, 



Nuphar 



Nymphica, 



Nyssa, 



25 | Obione 



19 J (Enothera, ...13, 



21 ! Oldenlandia 



17 Onoclea, 



14 Onosmodium, . . . 

 21 Osmunda,.9, 10, 



12 Ostrya, 



. 9 Oxalis 



25 Panicum, 



19 14, 15, 22, 25, 



15 Paspalum, 



17 Pastinaca, 



18 Pedicularis 



12 Penthorum, .... 



21 Phalaris, 



18 Phaseolus 



10 Phleum, 



7 Physostegia, .... 



23 Phytolacca 



20 Pilea 



20 Pinus 



23 Plantago, ..8, 18, 



25 Platanthera, 



12 17, 20, 



17 Platanus, 



13 Pluchea, 



10 Poa, ...6, 12, 15, 



12 Pogonia, ...'. .12, 



18 Polygala, 15, 



23 Polygonatum, . . . 

 12 Polygonum, 



25 19, 20, 23, 



21 Polypodium 



14 Pontederia 



10 Popidus, 



21 Portulaca, 



18 Potamogeton,.15, 



25 Potentilla,.6, 12, 



15 Proscrpinaca, . . . 



11 Prunus, 



24 Pterin, 



11 Pycnanthemum, . 



17 Pyrola 



21 Pyrus, 10, 



11 Quercus, 10, 



15 Ranunculus, 



14 8, 9, 13, 



12 



22 I Raphanus, 



18 I Rhamnus 



. 9 Rhexia 



16 Rhodora, 



17 Rhus, 15, 



14 Rhynchospora, . . 



Ribes, 



Robinia, 



Rosa, 



Rubus, 



Rudbeckia, 



17 | Rumex, 10, 



9 Ruppia, , 



23 , Sabbatia 



15 Sagina, 



Sagittaria, 



Salieornia, 



Salix, 



Salsola, 



Sambucus, 



Sanicula, 



Saponaria, 



Sarracenia, 



Sassafras, 



Saxifraga, 



Scirpus, . .12, 13, 



Scleranthus, 



Scutellaria, 



Sedum, 15, 



Selaginella 



Senecio, 5, 



Sericocarpus, . . . 



Setaria, 



Silene 10, 



Sinapis 



Sisymbrium, 

 Sisyrinchium, . . . 



13 j Sium, 



20 Smilacina, ...10, 

 10 ! Smilax 12, 



16 Solanum 14, 



20 ! Solidago, 25, 



Sonchus 



Sorghum 



Sparganium 



Spartina 22, 



Specularia, 



Spergula, 14 



Spergularia, 9 



Spiraea, 17, 20 



Spiranthes, ...23, 25 



Sporobolus, 25 



Stachys, 20 



Statice, 23 



Stellaria 5 



Stipa 13 



Symphytum,.... 17 

 Symplocarpus, — 5 



Tanacetum, 19 



Taraxacum, 6 



Tephrosia, 18 



Teucrium, 23 



Thalictrum,..10, 15 



Trichostema 25 



Tricuspis, 26 



Trientalis, 10 



Trifolium,....ll,14 



Triglochin 12 



Trisetum, 15 



Triticum 13 



Turritis, 9 



Typha, 18 



Ulmus, 6 



Urtica 20 



Utricularia, 21 



Uvularia, 9 



Vaccinium,.8, 9, 17 



Verbascum, 17 



Verbena, 21 



Vernonia, 25 



Veronica, 8, 17 



Viburnum, ... 13, 14 



Vicia, 15 



Vilfa, 26 



Viola, 7 



Vitis, 17 



Woodsia, 16 



Woodwardia, — 16 



Xanthium 25 



Xyris 23 



Zostera, 16 



