488 



Minnesota Botanical Studies 



Rhus 271 



glabra.. 265, 267, 273, 368, 372, 373 



hirta 155, 368, 372, 373 



radicans 265, 267, 268 



rydbergii. ..345, 350, 351, 368, 



372, 373 



trilobata 222, 265, 273 



Rhytisma Fr 69, 116 



acerinum (Pers.) Fries. ... 117, 120 



andromedae (Pers.) Fries.... 117 



punctatum (Pers.) Fries 118 



salicinum (Pers.) Fries. ..116, 120 



solidaginis Schwein 117 



Ribes 345 



americanum 345, 360, 367, 368 



aureum 159, 265, 268, 273 



cynosbati 368 



gracile 265, 267, 360, 368, 372 



hudsonianum 343, 345, 36.^ 



lacustre (Pers.) Poir 329 



prostratum 345 



triste 343, 363 



Rivularia echinulata (Smith) Born. 



and Flah 424 



Robinia pseudacacia 155 



Roripa nasturtium 279 



Rosa 232 



acicularis 345, 351, 352, 360 



arkansana. . .221, 231, 233,236, 



268, 372 



blanda. .345, 360, 367, 368, 372, 373 



woodsii 350 



Rubus...323, 358, 359, 371, 373, 379, 404 



allegheniensis 360 



occidentalis 159, 265 



pedatus 324 



strigosus. . .351, 352, 358, 360, 



367, 368, 372, 373 



triflorus 345, 361, 367, 369 



Rudbeckia hirta 299, 300 



Rumex britannica 283, 289, 292 



occidentalis 341 



persicarioides 288 



-venosus 222, 239, 302, 303 



verticillatus 341 



Ruppia maritima L 466 



occidentalis Wats 281, 466 



Rutstroemia Kar.sten 68, 100 



echinophila ., 101 



firma (Pers.) Karst 100 



-Sabina horizontalis 350 



Sagina saginoides (L.) Britton 321 



Sagittaria 282 



arifolia 286, 292, 340 



latifolia 283, 286 



subulata (L.) Buchenau 467 



Salamonia comutata 270 



Salix 116, 187, 302, 319, 363, 370, 



373, 376 



amygdaloides 265, 267 



arctica Pall 318, 324, 327 



Barclay! Anders 318, 327, 329 



bebbii 362, 366, 375 



Candida 342, 355, 366 



cordata 157, 366 



discolor.. .359, 362, 363, 366, 



373, 375, 377 



fluviatilis 159 



humilis 222 



— -longifolia 265, 267, 301 



myrtilloides 342 



nigra 265 



nivalis Hook 318, 327, 329 



petiolaris. . .342, 355, 362, 366, 375 



sitchensis Sanson 318 



vestita Pursh 318, 324, 327 



Salsola 302, 307 



tragus 302, 303 



Salvinia natans (L.) All 465 



Sambucus 323 



canadensis 265, 267 



pubens 157 



racemosa 373 



Sanguinaria 153, 156 



canadensis 270, 369, 374 



Sanicula marylandica 369, 372, 374 



Sarcina 133 



Sarcoscypha Fries 68, 94 



alpina E. & E 97 



coccinea (Jacq.) Cooke.. 94, 95, 119 



colensoi Sacc 83 



floccosa (Batsch.) Cooke.. 95, 96 



floccosa ScHW 97 



gregaria Cooke 73 



•melastoma (Sow.) Cooke 97 



occidentalis (Sciiw.) Cooke . . 96 



protracta (Fries) Sacc 96, 97 



scubalonta Cooke 75 



Sarracenia purpurea 342, 343 



Saxifraga adscendens L 320 



aizoides L 318, 327 



bronchialis L 323 



mertensiana Bong 330 



nivalis L 329 



-nootkana Moc 322 



oppositifolia L. ..318, 320, 321, 324 



pennsylvanica 342, 343 



punctata L 330 



Schedonnardus paniculatus 259 



Scirpus. ..50, 280, 284, 285, 286, 336, 



339, 340, 354, 364, 365, 370 



^americanus. .283, 285, 286, 290, 



291, 294, 295 



atrovirens Muhl 295, 470 



