III. 



Pa fee. 



Macrocalyx ■■^^-^ 



Mahonia ^^"^ 



Maianthemum 5~'5 



Malia ^3 



Malveopsi* 489 



Mamillaria ^"-^ 



Mentha 518 



Mentzelia 501 



Mertensia ■ 515, 516 



Miuiulus 517,518 



Monai da 519 



Monolepis 520 



Muhlenbei gia 530 



Musenuim ^^^ 



Myagrum ^*^^" 



ilyosotis 5i4,515 



Myriopteris ^35 



Naumburgia 513 



Neillia 495 



NympbsBa 484 



CEnot hera 500 



Onoclea 536 



Onosmoiiiiim 516 



Opiilaster 495 



Ophrys 524 



Opniitia 501 



Orchis 52i 



Oreocary a 515 



Orobancbe 518 



Orthocarpus 518 



Oryzopsis 529 



Osiuorrhiza 502 



Osmiiuda 536 



Ostrya 523 



Oxalis 489 



Oxytropis 493, 494 



Panicularia 532 



Panicuin 528 



Parietaria 522 



Pamassia 498 



Paronychia 488 



Parosela 491 



Partbenocissus 490 



Pastinaca 502 



PelliBa 535 



Pentstemon 517 



Peramium 524 



Petasites 509 



Peucedanum 502 



Phaca 492,493 



Pbalaris 528,529 



Phcgopteria 535 



Pbleum 529 



Phlox 514 



Phyaalis 516 



Picea 534 



Pinus 534 



Plantago 519 



Poa 531,532 



Polanigia 4S6 



Polygala 487 



Poly gonatnra 525 



Polygonum 521 



Folyotvs 51S 



Poly podiiun 535, 556 



Page. 



Popuhia 523 



Pot auiogeton 526 



Poteiitilla 406,497 



Prenaulhes 511 



Protartes ,V5 



Prunella 519 



Primus 494,495 



Psoralea 491 



Pteris 535 



Pteiospora 512 



Ptilepida 509 



Pulmonaria 515, old 



Pulsatilla 479 



Pyrola 512 



Quercus 523 



Ranunculus 480 



Rhus 490 



Kibes 498,499 



Roripa 485 



Rosa 497 



lUibus 496 



Rudbeckia 508 



Rumex 521 



Sagi ttaria 526 



Salix 523 



Salna '. 519 



Sambucus 503 



Sanicula 502 



Saponaria 487 



Salyiium 524 



Savastaua 529 



SaxilVaga 498 



Scliedonnardus 530 



Scirpus 526,527 



Scropbularia 517 



Scutellaria 519 



Sedum 499 



Selaginella 534 



Selinum 502 



Senecio 509, 510 



Serrattda ; . 504 



Sesleria 531 



Setaria 528 



Silene ,, 487, 4SS 



Sinapis 4S5 



Sisymbrium 485 



Sisyrinchium 524 



Sitanion 5$3 



Slum 502 



Sniilacina 525 



Siiiilax 525 



Sinynnum 502 



Solannm 516 



Solidago 505,506 



Soiu-hiia 511 



Sorbus 498 



Spartina 528 



Spicsia 493, 494 



Spiiifa 495 



Spiraiifhcs 524 



Sporobolus 530 



Stachys 519 



Stanley a 484 



Steiroiieuia 513 



SU'Uaria 438 



