barbata, 686 



dealbata, 686 

 Thalictrum, 957 



dasycarpum, 958 

 dasycarpum, 958 

 hypoglaucum, 958 



Fendleri, 958 



hypoglaucum, 958 

 Thelyptris, 69 



dentata, 74 



hexagonoptera, 72 



Kunthii, 75 



normalis, 75 



ovata 



Lindheimeri, 74 



palustris 

 Haleana, 72 



quadrangularis 

 versicolor, 74 



Torresiana, 72 



versicolor, 74 

 Theobroma cacao, 1125 

 Thin-leaf alder, 782 

 Thistle, 1694 



bull-, 1695 



Mexican-, 1257 



plumed-, 1694 



Russian-, 839 



swamp-, 1695 



white-, 850 



yellow-, 1695 

 Thorn, 1017 



camel-, 1065 

 Thorough wort, 1601 

 Thread-foot, 994 

 Three 



-square bulrush, 357 



-stem;, d rush, 627 



-way sedge, 344 

 Thurber's bog-orchid, 703 

 Thyme-leaved sandwort, 



897 

 Tickseed, 1660 



-sunflower, 1667 

 Tillaea, 994 



aquatica, 994 



Drummondii, 994 



Drummondii, 994 

 Tillaeastrum 



aquaticum, 994 



Drummondii, 994 

 Timber oatgrass, 224 

 Timothy, 240 



alpine-, 240 

 Tiniaria 



Convolvulus, 813 



cristata, 813 

 Tinker's penny, 1130 

 Tithonia, 1649 



Thurberi, 1649 



Tmesipteris, 37 

 Toad-rush, 615 

 Tobacco, 1449, 1450 



desert-, 1453 



fiddle-leaf-, 1453 



-root, 1562 



tree-, 1453 



wild-, 1453 

 Tobaco cimarron, 1453 

 Tofieldia, 650 



racemosa, 650 

 Tomato, 1449 

 Tooth-cup, 1162, 1164 

 Toronjil de Espaiia, 1401 

 Torreyochloa pauciflora, 



185 

 Touch-me-not, 1105 



family, 1105 



spotted-, 1108 

 Tovara virginiana, 810 

 Toxicodendron 



eximium, 1095 



quercifolium, 1095 



radicans, 1095 

 eximium, 1095 

 verrucosum. 1095 

 Tracaulon sagittatum, 813 

 Trachelospermum, 1334 



difforme, 1334 

 Tradescantia, 596 



canaliculata, 597 



edwardsiana, 596 



ohioensis, 597 



reflexa, 597 



Wrightii, 597 

 Tragiola pilosa, 1467 

 Trautvetteria, 928 



grandis, 928 

 Tree tobacco, 1453 

 Treebine, ivy-, 1112 

 Trefoil, 1053 

 Trepocarpus, 1226 



Aethusae, 1226 

 Triadenum 



petiolatum, 1 140 



tubulosum, 1140 



virginicum, 1 140 



Walteri, 1140 

 Trianthema. 875, 1361 



Portulacastrum, 875 

 Trichachne, 283 

 Trichloris, 265 



crinita, 265 

 Trichocoronis, 1599 



rivularis, 1599 



Wrightii, 1599 

 Tridens, 205 



albescens, 205, 208 



ambiguus, 208 



strictus, 205 



Trifolium, 1047, 1365 

 amabile, 1052 

 dasyphyllum, 1051 

 Fendleri, 1049 

 fragiferum, 1049 

 hybridum, 1053 

 lacerum, 1051 

 longicaule, 1049 

 microcephalum, 1048 

 nanum, 1051 

 neurophyllum, 1052 

 Parryi, 1051 

 pinetorum, 1049 

 pratense, 1052 

 repens, 1052 

 Rydbergii, 1052 

 stenolobum, 1052 

 Willdenovii, 1049 

 Wormskjoldii, 1049 



Triglochin, 131 

 concinnum 



debilis, 133 

 debilis, 133 

 maritimum, 131 



elata, 131 

 palustre, 131 



Trilliaceae, 659 



Trillium, 659 

 pusillum 



ozarkanum, 660 

 recurvatum, 660 



Shayi, 660 

 texanum, 659 



Tripsacum. 341 

 dactyloides, 341 

 occidentale, 341 



Trisetum, 220 

 montanum, 220 

 spicatum, 222 

 spike-, 222 

 Wolfii, 220 

 Wolfs-, 220 



True fern family, 61 



Trumpet, 990 

 yellow-, 990 



Tuckahoe, 560 



Tufted hair grass, 224 



Tule, 89, 357, 360 

 -espadilla, 87 



Tulillo, 454 



Tumble-mustard, 965 



Tumbleweed, 839 



Tupelo, 1262, 1265 



Turhina, 1354 



Turkey-tangle, 1405 



Turkeyberry, 1395 



Turnsole, 1384, 1389 



Turre hembra, 1404 



Turtle-grass, 167 



Twayblade 



1774 



