INDEX TO THE G-ENERA, 



Not including the Cultivated Plants, or the Mosses and Liverworts 



(page 27.) 



Abies, 8 



Acalypha, 26 



Acer^ 6 



Achillea 15 



Acorus, 12 



Adiantum, 16 



Agrimonia 20 



Agrostemma 14 



Agrostis, 15 



Aira, 15 



Aletris, 18 



Alisma, 21 



Allium, 12 



Alnus, 5 



Alopecurus 15 



Amarantus, 26 



Ambrosia, 24 I 



Amelanchier, 7 



Ampelopsis, 21 



Amphicarpaea, . . 24 



Anagallis, 20 



Andromeda 17 



Andropogon, .... 25 j 



Anemone, 6, 18 j 



Antennaria, ... 6, 22 ! 

 Anthoxanthum, ... 7 J 



Aphyllon, 10 | 



Apios, 22 j 



Apocynum, ..17, 21 



Aquilegia, 8 



Aralia 8, 12, 17 



Arctostaphylos, . . 6 



Arenaria, 10 



Arethusa, 12 



Arisaema, 10 



Aristida, 26 



Asclepias 18, 19 



Aspidium, 16 



Asplenium, 16 



Aster, 24, 25 



Atriplex 22 



Azalea, 14 



Ballota 20 



Baptisia 18 



Barbarea, 13 



Bartonia 21 



Benzoin, 6 



Berberis 10 



Betula 8 



Bidens, 24 



Bcehmeria 20 



Botrychium 23 



Brachyelytrum, . 18 



Bryzopyrum 24 



Bromus 15 



Brunella, 14 



Cakile, 20 



Calamagrostris, 



18, 25 



Callitriche, 9 



Calopogon, 14 



Caltha 6 



Calystegia, 14 



Campanula, 19 



Cannabis, 19 



Capsella, 5 



Cardamine, 9 



Carex 5, 6, 7 



Carpinus, 8 



Carya 11 



Cassandra, 6 



Cassia 21, 22 



Castilleia 9 



Ceanothus 19 



Cephalanthus, ... 22 



Cerastium, 9 



Chelidonium, .... 9 



Chelone, 23 



Chenopodina 23 



Chenopodium, ... 22 



Chimaphila, 18 



Chiogenes, 6 



Chrysopsis, 22 



Chrysosplenium, . . 5 



Cichorium 22 



Cicuta 17 



Cinna, 24 



Circaea, 19 



Cirsium 12, 



18, 19, 21, 24, 25 



Cladium, 17 



Clematis, 21 



Clethra, 23 



Comandra, 12 



Comptonia 8 



Conium, 17 



Coptis, 8 



Cornus, ..10, 13, 19 



Corylus, 5 



Crataegus, 12 



Cupressus, 6 



Cuscuta, 24 



Cyperus 24 



Cypripedium, 10 



Dactylis, 13 



Danthonia, 13 



Datura 23 



Daucus, 17 



Desmodium 24 



Dianthus, 19 



Dieksonia 16 



Dioscorea 23 



Diplopappus, .24, 25 

 Discopleura, .... 23 



Draba, 5 



Drosera 18 



Dulichium, 18 



Eleocharis, .7, 12, 17 



Elodea, 20 



Elymus, 22 



Epigaea 5 



Epilobium, ...18, 20 



Epiphegus, 26 



Equisetum, .... 5, 12 

 Eragrostis, ...24, 25 



Erecthites, 22 



Erigeron,.10, 17, 22 



Erioeaulon, 19 



Eriophorum, .... 17 



Erythronium, 8 



Eupatorium, . .24, 25 



Euphorbia, 23 



Fagus, 11 



Festuca, 13 



Fimbristylis, .... 24 



Fragaria, 7 



Fraxinus, 8 



Galium,.. 12, 14, 19 



Gaultheria 18 



Gaylussacia, 9 



Gentiana, 26 



Geranium, 10 



Gerardia,.21, 24, 26 



Geum 19 



Glyceria,.12, 13, 21 

 Gnaphalium, .19, 22 



, Goodyera, 23 



| Gratiola, 19 



; Gymnadenia, .... 21 



Hamamelis, 26 



Hedeoma, 23 



I Helianthemum, . . 12 



; Helianthus 22 



Hemerocallis, ... 17 



Heracleum, 12 



Hibiscus 25 



Hieracium, 12, 19, 24 



Hierochloa 9 



Holcus, 13 



Hottonia, 15 



Hydrocotyle, . . -.17 

 Hypericum, ..17, 20 



Hypoxys, 10 



Hudsonia 12 



Ilex 16 



Ilysanthes, 19 



Impatiens, 18 



Inula, 22 



Iris, 12 



Isoetes, 18 



! Iva 24 



Juncus, ..13, 14, 23 



Juniperus, 5 



Kalmia 14 



l Krigia, 10 



Lactuca, 19 



Lamium, 5 



Lappa, 22 



Lathyrus, 11, 15 



Lechea, 20 



