166 



INDEX. 



Page. 



Aplopappus Continued. 



Fremontii, Gray 66 



inuloides, T. & G 66 



Lyallii,Gray 66 



Macronema, Gray 66 



Parryi, Gray 66 



pygmseus, Gray 66 



rubiginosus, T. & G 65 



spinulosus, DC 65 



Aquilegia 



brevistyla, Hook 4 



caerulea, Torr 4 



Canadensis, L 4 



chrysantha, Gray 4 



leptocera, Nutt 4 



vulgaris, L 4 



Arabia 



Drummondii, Gray 6 



hirsuta, Scop 6 



retrof racta, Grah 6 



ARALIACEJS 53 



Archangelica 



Gmelini, DC 52 



Arctostaphylos 



Uva-ursi, Spreng 88 



Arenaria 



alpina, L 14 



arctica, Stev 14 



congesta, Nutt 13 



Fendleri, Gray 13 



lateriflora, L 14 



verna, L 14 



Arceuthobium, Bieb 124 



Americanum, Engelm 124 



robustum, Engelm 124 



Archemora 



Fendleri, Gray 52 



Argemone 



Mexicana, L 6 



Argyrothamnia, Miill 126 



humilis, Miill 126 



Aristida 



9 oligantha, MX 146 



purpurea, Nutt 146 



Arnica 



angustif olia, "VVahl 79 



Chamissonis, Less 79 



cordifolia, Hook 80 



latif olia, Bong 80 



mollis, Hook 80 



Artemisia 



arctica, Less 78 



borealis, Pall 78 



Canadensis, MX 78 



discolor, Dougl 78 



dracunculoides 78 



nlif olia, Torr 78 



frigida, Willd 78 



Ludoviciana, Nutt 78 



Parry i , Gray 78 



scopulorum, Gray 78 



tridentata, Pursh 78 



ASCLEPIADACE^E 113 



Asclepias 



brachy stepliana, Eng 114 



Jamesii, Torr 114 



ovalifolia, Decne 114 



speciosa, Torr 113 



tuberosa, L. 114 



verticillata, L. 114 



Page. 



Aspidium 



Filix-mas, S wz 154 



Asplenium 



ebeneum, Ait 154 



Filix-fceniina, Bernli 154 



septentrionale, L 154 



Trichomanes, L 154 



Aster 



adscendens, Lindl 56 



aestivus, Ait 56 



angustus, T. & G 58 



carneus, Nees 56 



elegans, T. & G 57 



Engelmannij Gray 57 



ericoides, L 56 



f alcatus, Lindl 56 



Fendteri, Gray 56 



glacialis, Nutt 57 



glaucus, T.&G 58 



laevis, L 56 



multifl orus, Ait 56 



Nuttallii,T. & G 56 



oblongif olius, Nutt 56 



ptarmicoides, T. & G 58 



salsuginosus, Richards 57 



Astragalus 



aboriginum, Richards 25 



adsurgetis, Pall 23 



alpinus, L 26 



bisulcatus, Gray 28 



Brandegei, Porter 24 



campestris, Gray 29 



Canadensis, L 23 



caryocarpus, Ker 23 



cyaneus, Gray 27 



decumbens, Gray 29 



Drummondii, Dougl 24 



Fendleri, Gray 28 



Jilif olius, Gray 27 



flexuosus, Dougl 28 



f rigidus, Gray 27 



glabriusculus, Gray 26 



gracilis, Nutt 25 



gradlis, Torr 25 



Hallii, Gray 28 



hypoglottis, L 24 



iodaiithus, Watson 25 



junceus, Gray 29 



Kentrophyta, Gray 30 



leptaleus, Gray 28 



lonchocarpus, T. & G 27 



lotiflorus, Hook 26 



Mexicanus, DC 23 



microlobus, Gray 25 



Missouriensis, Nutt 26 



mollissinms, Torr 23 



rnultiflorus, Gray 29 



nigresccns, Gray 29 



oroboides, Hornem 26 



Parryi, Gray 27 



pectinatus, Dougl 28 



pictus, Gray 27 



Plattensis, Nutt 23 



pubentissimus, T. & G 26 



racemosus, Pursh 25 



scopulorum, Porter 24 



sericoleucus, Gray 30 



Shortianns, Nutt 27 



simplicif olius, Gray 29 



sparsifloras, Gray 26 



