-de mico, 1386 

 Colic-root, 660 

 Collomia, 1375 



linearis, 1375 

 Colorado River hemp, 



1059 

 Columbine, 917 



longspur-, 918 



Rocky Mountain-, 917 

 Commelina, 593. 595 



communis, 595 



diffusa, 596 



virginica, 595 

 Commelinaceae, 593 

 Common 



-adder's-tongue, 50 



-bladderwort, 1519 



-blue violet, 1154 



-buttonbush, 1548 



-cat-tail, 87 



-dandelion, 1703 



-devil's claw, 1510 



-elder-berry, 1559 



-evening primrose, 1198 



-fennel, 1229 



-frogbit, 4, 159 



-frog-fruit, 1405 



-green-brier, 663 



-horn wort, 913 



-lousewort, 1501 



-meadow beauty, 1172 



-mouse-ear, 891 



-plantain, 1536 



-poolmat, 117 



-reed, 205 



-self-heal, 1419 



-water-nymph, 126 



-yarrow, 1686 

 Compositae, 1369, 1504, 



1586 

 Coneflower, 1651 



cutleaf-, 1652 

 Cone-spur bladderwort, 



1522 

 Conioselinum, 1249 



scopulorum, 1249 

 Conium, 1233 



maculatum, 1233 

 Conobea muUifida, 1470 

 Conoclinium, 1601 



betonicifolium, 1605 



betonicum, 1605 

 inte^rifolium , 1605 



coelestinum, 1603 



Greggii, 1605 

 Convolvulaceae, 1350 

 Convolvulus 



jratern i floras, 1353 



sepium, 1353 



fraterniflora, 1353 



repens, 1353 

 Conyza, 1630 



Coulteri, 1630 

 Coon-tail, 912 

 Cooperia, 669 



Drummondii, 669, 671 

 Copper lily, 671 

 Coral-berry, 1560 

 Coral green-brier, 664 

 Cordgrass, 4, 259 



alkali-, 265 



big-, 262 



gulf-, 262 



prairie-, 265 



saltmeadow-, 265 



smooth-, 262 

 Coreopsis, 1660 



Atkinsoniana, 1661 



cardaminaefolia, 1661 



linifolia, 1661 



similis, 1661 



stenophylla, 1661 



tinctoria, 1661 

 Corkwood, 769 



family, 769 

 Corn salad, 1565 

 Cornaceae, 1262 

 Cornel, 1265 

 Cornus, 1265 



asperifolia, 1266 



candidissima, 1266 



Drummondii, 1266 



foemina, 1266 



racemosa, 1266 



stolonifera, 1266 



stricta, 1266 

 Correhuela de las doce, 



1359 

 Cosmos, 1672 



parviflorus, 1672 

 Cotton 



-batting, 1632 



-grass, 363 



-gum, 1265 

 Cottonwood, 738 



eastern-, 748 



lanceleaf-, 739 



narrowleaf-, 742 



plains-, 748 



Rio Grande-, 745 



smooth-barked-, 739 

 Cotula, 1686 



coronopifolia, 1686 

 Cow 



-itch, 1112 



-lily, 4 



yellow-, 906 



-parsnip, 1253 

 Cowbane, 1251 



spotted-, 1237 



Cowpen daisy, 1659 

 Cowslip, American-, 1281 

 Crabgrass, 283 



northern-, 283 

 Crack-willow, 760 

 Cranesbill, 1071 

 Crassula 



aquatica, 994 



Drummondii, 994 

 Crassulaceae, 994 

 Crataegus, 1017 



abbreviata, 1021 



arbor ea, 1020 



berberifolia, 1020 

 berberifolia, 1021 

 edita, 1021 



brachyacantha, 1019 



Davisii, 1021 



edita, 1021 



microcarpa, 1019 



mollis, 1021 



opaca, 1020 



pyracanthoides, 1020 

 arborea, 1020 

 uniqiia, 1020 



rivularis, 1020 



spathulata, 1019 



uniqua, 1 020 



velutina, 1021 



viridis, 1021 



abbreviata, 1021 

 velutina, 1021 

 Crazy-weed, 1062 

 Cream-pea, 1069 

 Creeping 



-bentgrass, 234 



-buttercup, 933 



-foxtail clubmoss, 39 



-primrose-willow, 1187 



-spike rush, 381 



-spot-flower, 1649 

 Crepis, 1703 



perplexans, 1703 



runcinata, 1703 

 Cress 



American winter-, 981 



bitter-, 967 



bog marsh-, 976 



hairy bitter-, 968 



lake-, 979 



rock-, 964 



spring-, 968 



water-, 971, 974 



winter-, 981 



yellow-, 971 

 Cressa, 1351, 1367 



aphylla, 1351 



depressa, 1351 



leafless-, 1351 



nudicaulis, 1351 



1747 



