790 



INDEX. 



Page. 



Rhus ^07,408-409 



Rkynchosia 376 



Ribes 301-303, 304 



Ribgrass, English 603 



Rice, mountain 73 



RideUia 718 



Ring grass 70 



Rivina 228 



Robinia 356 



Robinson, B. L 11 



Rock cress 279 



Rocky Moimtain bee plant 290 



columbine 248 



juniper 37 



Roripa 284, 285 



Rosa 306-309 



Rosaceae 305-321 



Rosales 291-379 



Rose 306 



family 305-321 



mallow 417 



Roimd-leaved mint 555 



Rubacer 320 



Rubber plant, Colorado 727 



Mexican 699 



Rubiaceae 603-608 



Rubiales 603-612 



Rubus 319-320, 3^1 



Rudbeckia 706, 707 



Rue family 388-390 



meadow 254 



Ruellia 598 



Rulac 411 



Rumex 190, 191-193 



Rush 130 



family 130-135 



spike 112 



wood 134 



Russian thistle 199 



Rutaceae 388-390 



Rutosma 388 



Rydberg, P. A .' 10, 11 



work upon Astragalus 357 



work upon Quercus 164 



Rydbergia 730 



Rye grass 106 



wild , 108 



Sabina 37 



Sage 560 



grass 49 



Sagebrush 204, 734 



Sagina 238 



Sagittaria 42 



St. Johnswort 428 



family 428 



Salicaceae 154-161 



Salicales 154-161 



Salix 156-16) 



Salomonia 139 



Salpingia 466 



Salsify 621 



SaLsola 199-200,;?0e 



Salt bash 201 



cedar 427 



Saltgrass 98 



Mexican 94 



Page. 



Salvia 560-562 



Salviniaceae 27 



Salviniales 27 



Sambucus 609-610 



Samolus 491 



Sand bunchgrass 73 



grass 80 



plum 327 



verbena 223 



Sandalwood family 181 



Sandbar willow 159 



Sandbur 61 



Sandhill dropseed 76 



grama 86 



Sandwort 238 



Sanfoin 371 



Sanicula 477 



Santalaceae 181 



Santalales 177-181 



Sanvitalia 700 



Sapindaeeae 412 



Sapindales 405-412 



Sapindus 412 



Sapium 404 



Sapodilla family 495 



Saponaria 2^0,241 



Sapotaceae 495 



Sarcobatus 199 



Sareostemma 608 



Sartwellia 727 



Saururaeeae 154 



Savastana 61-62 



Sawgi-ass 112 



Saxifraga 296, 297 



Saxifragaceae 294-297 



Saxifrage family 294-297 



Scarlet hedge nettle 565 



Schaueria 59S 



Scliedonardus 85 



Sehizachyrium 49-50 



Schkuhria 720, 7^5 



Sehmaltzia 406-408,^09 



Schoenocaulon 129 



Schoenocrambe 285 



Scirpus 113, 114-116 



Scleropogon 89 



Scouring rush 29 



smooth 28 



Screw bean 329 



Scrophularia 578-579 



Scrophulariaeeae 575-597 



Scutellaria 555-556 



Sea purslane 229 



Sedge 116 



family 110-124 



Sedum S92, 293-294 



Selaginella 29-30 



family 29-30 



Selaginellaceae 29-30 



Selenia 266 



Self-heixl 477, 565 



Selinocarpus 224-225 



Senecio 740-748 



Senecioneae 637. 645 



Senna 334 



family 332-335 



