Index 



489 



fluviatilis 283 



hudsonianu3 CMuhx.) Fer- 



NALD 470 



^lacustris 49, 55 



lineatus Michx 470 



— — nanus Spreng 470 



occidentalis 338 



-pallidus (Britton) Fernai.d 



283, 292, 470 



polyphyllus Vahl 470 



rubrotinctus Fernald 470 



sylvaticus L 470 



validus.282. 283, 285, 286, 290, 338 



Sclerotinia Fuckel 68, 99, 101 



— — tuberosa (Hedw.) Fries 119 



tuberosa (Hedw.) Fckl 100 



Scutellaria galericulata. .292, 294, 295, 



301, 341, 366 



Sedum stenopetalum Pursii 329 



Selaginella apus (L.) Spring 465 



densa Rydb 271, 329 



Senecio pauciflorus Pursh 320 



plattensis 222, 233, 236 



triangularis Hook 319, 322 



Sepultaria 271 



Setaria verticillata (L.) Beauv 467 



Shepherdia canadensis (L.) Nutt 330 



Sibbaldia procumbens L 320, 327, 350 



Sideranthus spinulosus.222, 239, 254, 259 



Sieglingia purpurea 240, 250 



Silene acaulis L 318, 319, 327 



antirrhina 299 



Silphium laciniatum 254 



perfoliatum 270 



Sirocyphis nivea 188 



Sirodothis populi 187, 188 



Sirozythia pilosa 188 



Sisyrinchium angustifolium Mill. 222, 473 



gramineum Curtis 473 



mucronatum Michx 473 



Sitanion elynioides Raf 469 



longifolium J. G. Smith 469 



Sium cicutaefolium 366 



Smilacina racemosa 369 



stellata 367, 369, 372, 374 



trifolia 342, 343 



Smilax ecirrbata (Engelm.) Wats... 472 



herbacea L 265, 268, 369, 472 



hispida Muhl 473 



rotundifolia L 473 



Solanum rostratum 302, 303 



Solidago 350, 357 



canadensis 270, 299, 359, 372 



-missouriensis 371 



multiradiata Ait. var. scopu- 



lorum Gray 323, 327 



nemoralis 357, 359, 371 



-rigida 299, 300 



serotina 299 



Sorbus aniericana 345 



Sorghastrum avenaccum 222, 299 



Sparganium americanum Nutt 466 



americanum var. androclad'um 



(Engelm.) Fernald and 



Eames 466 



diversifoliuni (Jraebner 466 



diversifoliuni var. acaule 



(Beebv) Fernald and Eames 466 



eurycarpum 286, 340 



simplex Huds 466 



-Spartina 370 



cynosuroides. . .283, 286, 291, 



295, 298, 300, 370 



gracilis Tri n 468 



Sphagnum. ..341, 342, 343, 344, 362, 



363, 374, 375, 376, 377 



cymbifolium 348 



Spathularia 67 



Sphaeriaceae 185 



Spiraea van Houttei 157, 159 



Spiranthes lucida (H. H. Eaton) 



Ames 473 



Spirodela 286 



Spirogyra 408, 419, 424 



Sporobolus asper (Michx.) Kunth. 



222, 468 



cryptandrus 222 



cuspidatus 253 



^vaginiflorus (Torr.) Wood... 468 



Stachys palustris. .283, 286, 292, 294, 



295, 296 



Staphylea trifolia 157 



Staurastrum 419, 424 



Steironema ciliatum 291, 293, 300 



Stephanodiscus 413, 419 



niagarae Ehr. ...415, 416, 418, 



422, 424 



Stipa 226, 259, 262, 308, 371 



avenacea L 468 



canadensis Poir 467 



comata Trin. and Rupr...221, 



224, 225, 226, 233, 240, 251, 



252, 253, 298, 305, 468 



spartea 252, 253, 254, 298, 357 



-viridula 270 



Streptopus longipes 472 



roseus Michx 345, 472 



Strophostyles pauciflora 291 



Symphoricarpos 271 



occidentalis. .265, 267, 268, 368, 



372, 373 



racemosus 159, 350 



Symplocarpus 138, 146, 151, 152 



foetidus 1-9, 137, 141 



Svndesmon thalictroides 369 



