260 
Ulothrix collabens, 45; flacca, 45; 
implexa, 45; variabilis, 12, 45. 
Ulva Lactuca, 45. 
Uncommon mosses in northern Es- 
sex County, Massachusetts, 95. 
Undescribed Varieties and Hybrids 
of Carex, Some, 170. 
United States, Bartonia iodandra,— 
a species new to the, 55. 
Unusual Form of Drosera interme- 
dia, var. Americana, 70; Variations 
of two common Agarics, 32. 
Uromyces Lespedezae, 186. 
Urospora penicilliformis, 45. 
Urtica dioica, 157; gracilis, 208. 
Usnea barbata, 66, 67. 
Utricularia, 70; cornuta, 126; inter- 
media, 126; purpurea, 123, 126, 215; 
resupinata, 123. 
Vaccinium caespitosum, 88, 98, 137, 
187, 188, 189, 190; canadense, 189; 
corymbosum, 82; formosum, 224; 
Oxycoccus, 208; pennsylvanicum, 
82, 224, 225, Autumnal Flowering 
of, 224; uliginosum, 88, 97, 98, 138, 
187, 189, 190; Vitis-Idaea, 97, 98, 138. 
Vanda, 31. 
Variations of Ilex verticillata, 104; of 
two common Agarics, Unusual, 32. 
Varieties and Hybrids of Carex, 
Some Undescribed, 170; of Pota- 
mogeton and Spiraea, 102.- 
Variety of Zizia aurea, A new, 225. 
Vaucheria litorea, 45; piloboloides, 
I3, 45, var. compacta, 13, 45; 
Thuretii, 13, 45. 
Verbena bracteosa, 205. 
Vermont, Arceuthobium pusillum on 
a new Host in, 8; Baptisia austra- 
lis in, 172; Botanical Club (winter 
meeting, 1900), 88; Daphne Meze- 
rium in, 142; Ferns of a deep 
Ravine in Thetford, 229; Informa- 
tion desired concerning Plants 
doubtfully ascribed to the Flora of, 
157; New or rare Plants from 
Pownal, 171; Notes on a Species 
of Cyathus in Lawns at Middle- 
bury, 99; Plants, Notes on, 88; 
Polymnia canadensis in, 70; Rus- 
sula emetica in, 71; Some Orchids 
of eastern, 171; Orchidaceae of a 
Series of Swamps of southern, 114. 
Veronica arvensis, 137, 156; Bux- 
baumii, 126. 
Rhodora 
ULT 
— 
[ DECEMBER 
Viburnum cassinoides, 37, 125; den- 
tatum, 187; lantanoides, 37; Opu- 
IHE, See 
Vicia caroliniana, 90; Cracca, 90; 
for New England, A new, 225; hir- 
suta, 90; sativa, 90, 225; sepium, 
225; tetrasperma, 9o. 
Vineyard Sound, Notes on two rare 
Algae of, 206. 
Viola, 235; blanda, 208; lanceolata, 
208; palustris, 98; pedata, I57, 216; 
rotundifolia, 122; Selkirkii, 124. 
Viscum album, r. 
Vitis. Labrusca, 124. 
Walking-fern in Worcester County, 
Massachusetts, 14. 
Webera sessilis, 63, 96. 
Webster, Hollis, Variations of two 
common Agarics, 32; Dr. Burt’s 
Note on Russula emetica, 72; Note 
on Peziza rapulum, 106; Naucoria 
Christinae, 127; Boleti collected at 
Alstead, N. H., 173; An afternoon 
Outing for Toadstools, 191; Trich- 
oloma portentosum, 143. 
Webster, J. R., Cleistogamy in Li- 
naria canadensis, 168. 
Wiegand, K. M., Some Varieties of 
Potamogeton and Spiraea, 102. 
Wild Garden, Notes of a, 159. 
Wild, Levi, Baptisia australis in Ver- 
mont, 172. 
Williams, Emile F., Bartonia iodan- 
dra,—a species new to the United 
States, 55. 
Winter, Seaweeds in, 130. 
Wocdsia Ilvensis, 184, 211; obtusa, 184. 
Woodwardia angustifolia, 127; vir- 
ginica, I24, 202. 
Worcester County, Massachusetts, 
Further Notes on the Flora of, 
201; The Walking-fern in, r4. 
Xanthium canadense, 204, 205; spin- 
osum, 205; strumarium, 204. 
Xanthoxylum americanum, 201. 
Xenococcus Schousboei, 43. 
Yellow-fruited Ilex verticillata, 242. 
Zannichellia, 217. 
Zizania aquatica, 210. 
Zizia, aurea, A new variety of, 225, 
var. Obtusifolia, 225. 
Zostera, 206, 217; marina, 208. 
