256 
Spartina alterniflora, var. pilosa, 
161. 
Spergularia canadensis, 115. 
Sphaerozosma, 240, pulchrum, 240; 
spinulosum, 240. 
Sphagnum macrophyllum, 121; Py- 
laesi, 121, 122. 
Sphenopholis obtusata, 113; pal- 
lens, 161. 
Spigelia marilandica, 83. 
Spiraea tomentosa, var. rosea, 87. 
Spiranthes cernua, 44, var. ochro- 
leuca, 167; gracilis, 44; Roman- 
zoffiana, 99. 
Spirogyra, 103, 110. 
Spirotaenia, 215; condensata, 215. 
Spondylosium, 240; papillosum, 
240; planum, 240; pygmaeum, 
240. 
Sporobolus uniflorus, 82. 
Stachys cordata, 100;  hyssopi- 
folia, 88; palustris, var. homo- 
tricha, 184. 
Staurastrum, 236;  aciculiferum, 
236; Arctiscon, 236; aspinosum, 
237; avicula, 237; bicornatum, 
237; Biennianum, var. ellipti- 
cum, 237; Brebissonii, 237; brev- 
ispinosum, 237; concinnum, 237; 
coronulatum, 237; crenulatum, 
237; cuspidatum, 237; cyrto- 
cerum, 237; dejectum, 237, var. 
convergens, 237; Dickei, 237; 
dilatatum, 237; elegantissimum, 
237; erasum, 237; eustephanum, 
238; furcigerum, 238; gracile, 
238; grande, 238, var. parvum, 
238; granulosum, 238; hexa- 
cerum, var. aversum, 238; hir- 
sutum, 238; incisum, 238; in- 
flexum, 238; iotanum, 238; irregu- 
lare, 238; leptocladum, 238, var. 
cornutum, 238; margaritaceum, 
238; megacanthum, 238; Meriani, 
238; monticulosum, 239; murica: 
tum, 239; muticum, 239; odonta- 
tum, 239; Ophiura 239; orbiculare, 
var. Ralfsu, 239; paradoxum, 
239; polymorphum, 239; poly- 
trichum, 239; proboscideum, 239; 
punctulatum, 239; pygmaeum, 
239; Ravenelii, 239; Sebaldi, 
239; setigerum, 239; spongiosum, 
239; tetracerum, 239; tumidum, 
239; vestitum, var. tortum, 239. 
Steironema, 233; ciliatum, 233; 
lanceolatum, 233, 
Rhodora 
[DECEMBER 
Stellaria aquatica, 116; borealis, 
var. isophylla, 116; pubera, 99. 
Stewartia pentagyna, 150. 
Stigleoclonium, 51. 
Stigonema informe, 103, 107; mam- 
milosum, 103, 107, 110; ocella- 
atum, 103, 107; panniforme, 107. 
Streptopus amplexifolius, 115; ro- 
seus, 115. 
Strophostyles helvola, 58, 99. 
Styrax americana, 83. 
Subularia aquatica, 174. 
Sucrier, 55, 56. 
Synechococcus aeruginosus, 107. 
Syringa, 234; persica, 234; vulgaris, 
234. 
Taxodium distichum, 83. 
Taylor, W. R., Notes on some 
Algae from British Columbia, 
101. 
Tephrosia virginiana, 58. 
Tetmemorus, 219; Brebissonii, 219; 
laevis, 219. 
Tetraedron minimum, 110. 
Tetraspora lubrica, 110. 
Teucrium canadense, var. littorale, 
202. 
Thalictrum anemonoides, 185. 
Thelypteris Boottii, 159; simulata, 
111, 159. 
Thlaspi arvense, 19, 150. 
Thuja, 160; occidentalis, 98, 160. 
Tiarella cordifolia, 116. 
Tolypothrix byssoidea, 107; lanata, 
103, 107. 
Torilis, 95; leptophylla, 95. 
Tortula papillosa, 123. 
Trentepohlia aurea, 106. 
Trichoon, 55, 56. 
Trientalis, 233; americana, 233; 
borealis, 181, 186, 233; europaea, 
186. 
Trifolium dubium, 176. 
Triglochin palustris 98. 
Triploceras, 219; gracile, 219; ver- 
ticillatum, 219. 
Twinflower, 210. 
Ulota americana, 123; crispa, 123; 
Ludwigii, 123. 
Ulothrix, 51, 103, 110. 
Ulotricaceae, 53. 
Ulvaceae, 53. 
Umbelliferae, 92. 
Uniola longifolia, 148. 
Utricularia clandestina, S88; cor- 
