26 
Catalpa speciosa, 1: 120-E 
Ceanothus arboreus, 3: 29 
Ceanothus spinosus, 3: 30 
Ceanothus thyrsiflorus, 3: 31 
Celtis laevigata, 1: 122-W, 
122-E; 5: 40 
Celtis lindheimeri, 3: 32 
Celtis occidentalis, 1: 
121-W, 121-E 
Celtis reticulata, 3: 33-N, 
33-NW, 33-SW 
Celtis tenuifolia, 4: 31; 5: 41 
Cephalanthus occidentalis, 
3: 34-NW, 34-SW, 34-N; 
4: 32-NE, 32-SE, 32-N; 
5: 42 
Cercidium floridum, 3: 35 
Cercidium macrum, 3: 36 
Cercidium microphyllum, 3: 
37 
Cercis canadensis, 3: 38-N, 
38-SW; 4: 33-NE, 33-SE, 
33-N; 5: 43 
Cercis occidentalis, 3: 39 
Cercocarpus betuloides, 3: 40 
Cercocarpus breviflorus, 3: 41 
Cercocarpus ledifolius, 3: 42 
Cercocarpus traskiae, 3: 43 
Cereus giganteus, 3: 44 
Cereus robinii, 5: 179 
Chamaecyparis lawsoniana, 
1: 10-W 
Chamaecyparis nootkatensis, 
1: 12-W, 12-N; 2: 12 
Chamaecyparis thyoides, 1: 
11-E; 5: 1 
Chamaedaphne calyculata, 
2: 67 
Chilopsis linearis, 3: 49 
Chionanthus virginicus, 4: 
34; 5: 44. 
Chrysobalanus icaco, 5: 180 
Chrysophyllum oliviforme, 5: 
181 
Citharexylum berlandieri, 3: 
45-N, 45-SW 
Citharexylum fruticosum, 5: 
182 
Cladothamnus pyroliflorus, 
2: 68 
Cladrastis kentukea, 4: 35 
Clethra acuminata, 4: 36 
Cliftonia monophylla, 4: 37; 
3: 45 
Clusia rosea, 5: 183 
Coccoloboa diversifolia, 5: 
184 
Coccoloba uvifera, 5: 185 
Coccothrinax argentata, 5: 
186 
Colubrina arborescens, 5: 187 
Colubrina cubensis, 5: 188 
Colubrina elliptica, 5: 189 
Condalia globosa, 3: 46 
Condalia hookeri, 3: 47 
Conocarpus erectus, 5: 190 
Cordia boissieri, 48-N, 
48-SW 
Cordia sebestena, 5: 191 
Cornus alternifolia, 4: 
38-NE, 38-SE, 38-N; 5: 
46 
Cornus drummondii, 4: 39 
Cornus florida, 1: 124-N, 
124-E; 5: 47 
Cornus glabrata, 3: 50 
Cornus nuttallii, 3: 51-NW, 
51-SW 
Cornus occidentalis, 3: 52 
Cornus racemosa, 4: 41 
Cornus rugosa, 4: 40-N, 
40-NE 
Cornus sessilis, 3: 56 
Cornus stolonifera, 2: 63; 3: 
53-N, 53-NW, 53-SW; 4: 
43-N, 43-NE 
Cornus stricta, 4: 42; 5: 158.6 
Corylus cornuta, 3: 54-N, 
o4-NW; 4: 44-N, 44-NE 
Cotinus obovatus, 4: 46 
Cowania mexicana, 3: 55-N, 
55-SW 
Crataegus aestivalis, 6: 1 
Crataegus berberifolia, 6: 2 
Crataegus brachyacantha, 
6: 3 
Crataegus brainerdii. 6: 4 
Crataegus calpodendron, 6: 6 
Crataegus chrysocarpa, 3: 57; 
6: 5 
Crataegus coccinea, 6: 7 
Crataegus coccinioides, 6: 9 
Crataegus columbiana, 3: 
58-N, 58-NW; 6: 8 
Crataegus crus-galli, 6: 10 
Crataegus dilatata, 6: 11 
Crataegus douglasii, 3: 59-N, 
59-NW; 6: 12 
Crataegus erythropoda, 3: 
60; 6: 13 
Crataegus flabellata, 6: 14 
Crataegus flava, 6: 16 
Crataegus greggiana, 6: 15 
Crataegus harbisonii, 6: 17 
Crataegus intricata, 6: 18 
Crataegus lacrimata, 6: 19 
Crataegus marshallii, 6: 20 
Crataegus mollis, 6: 21 
Crataegus opaca, 6: 22 
Crataegus phaenopyrum, 
6: 23 
Crataegus pruinosa, 6: 24 
Crataegus pulcherrima, 6: 25 
Crataegus punctata, 6: 26 
Crataegus reverchonii, 6: 28 
Crataegus saligna, 3: 61; 6: 
27 
Crataegus spathulata, 6: 29 
Crataegus succulenta, 3: 62; 
6: 31 
Crataegus texana, 6: 30 
Crataegus tracyi, 3: 63; 6: 32 
Crataegus triflora, 6: 33 
Crataegus uniflora, 6: 34 
Crataegus viridis, 6: 35 
Crossopetalum rhacoma, 3: 
192 
Cupania glabra, 5: 193 
Cupressus arizonica, 1: 13-W 
Cupressus bakeri, 1: 14-W 
Cupressus goveniana, 1: 
15-W 
Cupressus guadalupensis, 1: 
16-W 
Cupressus macnabiana, 1: 
17-W 
Cupressus macrocarpa, 1: 
18-W 
Cupressus sargentii, 1: 19-W 
Cyrilla racemiflora, 4: 45-N, 
45-SE; 5: 48 
Dalea spinosa, 3: 64 
Diospyros texana, 3: 65 
Diospyros virginiana, 1: 
123-E; 5: 49 
Dipholis salicifolia, 5: 194 
Dodonaea viscosa, 3: 66-N, 
66-SW; 5: 195 
Drypetes diversifolia, 5: 196 
Drypetes lateriflora, 5: 197 
Ehretia anacua, 3: 67-N, 
67-SW 
Elaeagnus commutata, 2: 60 
Elliottia racemosa, 4: 47 
Empetrum nigrum, 2: 64 
Erythrina flabelliformis, 3: 
68-N, 68-SW 
Erythrina herbacea, 4: 48-N, 
48-SE; 5: 50 
Esenbeckia berlandieri, 3: 
69-N, 69-SW 
Eugenia axillaris, 5: 198 
Eugenia confusa, 5: 199 
Eugenia foetida, 5: 200 
Eugenia rhombea, 5: 201 
Euonymus atropurpureus, 4: 
49-NE, 49-SE; 5: 158.3 
Euonymus occidentalis, 3: 70 
Exostema caribaeum, 5: 202 
Exothea paniculata, 5: 203 
Eysenhardtia polystachya, 3: 
72-N, 72-W 
