710 
INDEX. 
Tripsacurn, 
615 
Trisetum, 
605 
Triticum, 
602 
Trollius, 
12 
Troximon, 
250 
Tulipaceje, 
494 
Tulip Tribe , 
494 
Tupelo Family , 
396 
Turritis, 
36 
Tussilago, 
195 
Typha, 
450 
Typhace®, 
450 
Udora, 
462 
Ulmaceae, 
399 
Ulmus, 
399 
Umbelliferae, 
153 
Uniola, 
601 
Uralepis, 
589 
Urtica, 
435 
Urticace^e, 
433 
Utricularia, 
286 
Uvaria, 
19 
Uvularia, 
497 
UvULARINEiE, 
497 
Vaccinieje, 
258 
Vaccinium, 
259 
Valerian Family , 
181 
Valeriana, 
182 
Valerianace.®, 
181 
Valerianella, 
182 
Vallisneria, 
463 
Veratrum, 
500 
Verbascum, 
296 
Verbena, 
311 
Verbenaceab, 
311 
Verbesina, 
232 
Vernonia, 
189 
Veronica, 
302 
Vervain Family , 
311 
Viburnum, 
174 
Vicia, 
93 
Vilfa, 
575 
Vine Family, 
85 
Viola, 
44 
VlOLACEiE, 
Violet Family , 
Virgin s-bower Tribe , 
Viscum, 
Vitaceae, 
Vitis, 
Waldsteinia, 
Walnut Family, 
Waterleaf Family , 
Water-Lily Family , 
Water-Plantain Family , 
Water-shield Family , 
Water-staricort Family , 
Water wort Family , 
Webera, 
Weissia, 
Willow Family , 
Windsoria, 
Wistaria, 
Witch-Hazel Family , 
Woodsia, 
Wood-Sorrel Family , 
Woodwardia, 
Xanthium, 
Xerophyllum, 
Xyl osteon, 
Xyridaceae, 
Xyris, 
Fam Family , 
Yellow-eyed Grass Family , 
Yellow-rattle Family , 
Few? Family , 
Zannicbellia, 
Zanthorhiza, 
Zanthoxylaceae, 
Zanthoxylum, 
Zapania, 
Zea, 
Zizania, 
Zizia, 
Zostera, 
Zygadenus, 
43 
43 
4 
398 
85 
86 
121 
410 
340 
23 
458 
22 
402 
55 
662 
649 
424 
589 
97 
152 
629 
75 
625 
221 
502 
172 
513 
513 
484 
513 
301 
444 
453 
14 
77 
77 
312 
618 
573 
161 
453 
498 
FINIS. 
