INDEX OF GENERA AND SPECIES 
763 
Scirpus lacustris, 181, 189, 194, 200, 202, 
204, 205, 214, 217, 228, 230, 231, 
235, 236, 237, 238, 239, 243, 244, 
248, 249, 255, 328. 
setaceus, 181, 233. 
sylvatica, 254. 
Scrophularia aquatica, 174, 328. 
nodosa, 174. 
Scutellaria galericulata, 175. 
Selenastrmn bibraianum, 332. 
Senecio aquaticus, 173, 214. 
Serratula tinctoria, 173. 
Sida crystallina, 278, 316. 
limnetica, 400. 
Silene maritima, 171. 
Silurus, 358. 
Simocephalus exspinosus, 316. 
vetulus, 316. 
Sium angustifolium, 173. 
Sparganium, 396. 
minimum, 167, 179, 203, 204, 211. 
natans, 179, 194, 199, 204, 208, 210, 
223, 328. 
ramosum, 166, 178, 179, 193, 214, 217, 
249, 328. 
simplex, 178, 193. 
simplex, var. longissimum, 179, 255. 
Sphmrophoron coralloides, 190, 218, 224. 
SphoiTOsoma, 332. 
Sphagnum, 166, 204, 211, 240, 241, 357, 
386. 
acutifolium, 185, 203. 
cuspidatum, 185, 329. 
cuspidatum, Ya.T. plumosum, 185, 203. 
cymbifolium, 185, 218, 256. 
intermedium, 185, 256. 
subsecundum, 185. 
subsecimdum, var. viride, 185. 
Sphenoderia dentata, 326. 
326. 
Spircea ulmaria, 171, 193, 208, 214, 217, 
253. 
Spirogyra, 194, 235, 358. 
crassa, 191, 217, 330, 
Spii'otcenia condensata, 330. 
Spondylosium pmlclirum, 280. 
Spongilla, 356- 
Jluviatilis, 227. 
lacustris, 324. 
Stachys palustris, 175. 
Staurastrum, 358. 
anatinum, 280, 331. 
angulatum, 331. 
arctiscon, 280, 331. 
aristiferum, 331. 
aver sum, 280, 331. 
avicula, 331. 
bifidum, 331. 
brachiatum, 331. 
brasiliense, 279, 331. 
brevispinum, 279, 332. 
curvatum, 279, 332. 
cuspidatum, 279, 332. 
dejectum, 279, 332. 
erasum, 280, 332. 
furcigerum, 280, 332. 
^gracile, 280, 282, 332. 
Staurastrum groAide, 279, 332. 
liibernicum, 332. 
inelegans, 279, 332. 
jaciUiferum, 279, 282, 332. 
longispinum, 279, 332 
lunatum, 280, 281, 332. 
megacanthum, 279, 332. 
ophiura, 280, 332. 
paradoxum, 280, 281, 332. 
pilosum., 332. 
polymorphum, 332. 
pseudopelagicum, 280, 332. 
sexangulare, 280, 332, 
subnudibrachiatum ,280. 
subpygmceum, 332. 
teliferum, 280, 332. 
tumidum, 332. 
tu7'gescens, 332. 
vestitum, 332. 
Stauroneis anceps, 333. 
Stellar ia palustris, 171. 
uliginosa, 171, 214, 217. 
Stenostoma leucops, 318. 
Stentor ca^ruleus, 324. 
324. 
pediculatus, 325. 
polymorpha, 324. 
viridis, 324. 
Steplianoceros eichliorni, 320. 
Stephanops stylatus, 322. 
tenellus, 322. 
Stratiotes alo'ides, 301, 328. 
Streblocerus serricaudatus, 316. 
Stylaria, 300, 318. 
lacustris, 318, 
lomondi, 318. 
Stylodrilus gabretcK, 292, 293, 318. 
Subularia aquatica, 170, 195, 243. 
Surirella biseriata, 281. 
robusta, 281, 282, 333. 
robusta, var. spilendida, 269. 
Symphytum o-fficinale, 174. 
Synchaia, 278, 411 = 
fennica, 408. 
grandis, 278, 321, 409. 
oblonga, 321. 
pectinata, 278, 321, 409. 
tremula, 278, 321, 409. 
Synedra pulchella, 333. 
wZ7ia, 281, 333. 
Synura uvella, 327. 
Tabellaria, 290, 411. 
fenestrate, 280, 282, 303, 333. 
fenestrata, var. aster ionelloides, 303. 
floceulosa, 280, 282, 303, 333. 
Taphrocampa annulosa, 321. 
selenura. 322. 
Telphusa Jluviatilis, 550. 
Tetmemorus granulatus, 330. 
Tetracyelus lacustris, 333, 
Tetraedron limneticum, 303, 333, 
Thamnium lemani, 305, 
Tintinniclium, 325. 
Tintinnus, 325. 
TofieldAa palustris, 177. 
Toxophyllum meleagris, 324. 
