H8 
INDEX OP THE GENERA. 
S. t^age. 
T. 
page. 
V. 
page. 
Syena 
5 
Trichostomum 
103 
Vernonia 2.if 
73 
Symphoricarpos ^',/7^22 
Tricratus 
l8 
Vero'nica i % 
2 
Syfnph'y.tun>. 
18 
Trientalis - 
38 
Verrucaria ' 
105 
Symplocos 
70 
Trifolium Z ^ 
70 
Viburnum 
32 
Syntherisma^ 
9 
Triglo'chin- ' 
37 
Vicia Z% 
68 
Syringa 
2 
rrillium 7'^ 
38 
Vinea 
27 
Triosteum 
22 
Vi'ola io,» 2 >A- 
25 
T. 
Trip'sacum' // 
87 
Virgilia 
42 
Talinum /g 
48 
Tripterella %. ]0 
4 
Viscum 
96 
Tanace'tum 21^ 
75 
Triticum ' 
13 
Vitex ' * 
62 
Taxus . 
98 
Trollius 
56 
Vitis 
26 
Tetragonothe'ca ‘Xb 
80 
Tuber 
106 
Vittaria 
102 
Tetraphis 
103 
Tuber cularia. 
106 
Teucrium JCf 
57 
TubuUna 
107 
W.’ 
Thalia / . 
1 
Tu'lipa 
34 
Wendlandia . ' 
38 
Thalictrum 
56 
Tulostoma 
107 
Winteriana 
47 
Thapsia H 
31 
Turnera 
32 
Woodwardia 
102 
Taele'phora 
108 
Turri'tis 2 i 
63 
i 1 
Thesium JO. ]kl 
26 
Tussila'go ^ 
76 
X. 
Thlaspi z < 
62 
Typha ^9 » 
86 
Xanthi um 2 7 
89 
Thuja 
94 
2 z 
Xerophyllurri /3 
37 
Thymbra 
56 
Xyloma 
106 
Thymu^'’ .. 
58 
Ulmus ff 
28 
Xylosteum 
23 
Tiarella }h *' • 
45 
Ulva 
105 
Xyris 
5 
Tilia /S 
54 
Uniola oz- 
11 
Tillandsia ^ t 
33 
Urceolaria 
105 
Y. 
Timmia ’ 
103 
U redo 
107 
Yucca /x^ 
35 
Tofieldia 
37 
Urti'ca /; 
89 
Tordylium 
30 
Usnea 
106 
Z. 
Trachinotia 
7 
Utricularia *)ij 
O 
O 
Zamia 
98 
Tradescantia iZy 
33 
U vularia /v? 
34 
Zannichellia 
86 
Tragia 
88 
i ' 
Zanthorrhi'za 
33 
T ragopo'gon 
71 
V. 
Zantho'xylum 
96 
Treinella 
108 
Vaccinium 
39 
Zapania 
60 
Tri'bulus 
43 
Valeria'na 
4 
Zea 
87 
Tricera 
89 
Valisneria 
95 
Zigadenus • 
37 
Trichia 
107 
Variolaria 
105 
Zinnia 
80 
Trichoderma 
107 
Vera'trum /0 
98 
Zizania 
90 
Tiichodium 
10 
Verbascum US 
23 
Zizyphus ’ ' 
24 
Trichup horum 
7 
Verbe'na zo r 
59 
Zornia 
69 
Trichoste^ma ^10 
58 
Verbesina "i ® 
81 
Zoste'ra 
86 
