INDEX. 



175 



Page. 



Palafoxia, Lag 74 



Hookeriana, T. & G 74 



Texana, Hook 74 



Panicum 



amarum, Ell 152 



capillare,L 152 



Crus-galli, L 152 



pauciflorum, Ell 152 



virgatum, L 152 



Papaver 



alpina, L 6 



PAPAVEK ACE JE 6 



Parietaria 



Pennsylvania, Muhl 127 



Parinelia 



caperata, Ach 162 



conspersa, Aeh 162 



Kauitschadalis, Eschw 161 



lanata, Nyl 162 



olivacea, Ach 162 



Parnassia 



fimbriata, Banks 41 



parviflora, DC 41 



Paronychia 



Jamesii, T. & G 119 



pulvinata, Gray 119 



sessiliflora, Nutt 119 



PAROXYCIIIE.E 119 



Paspaluiu 



setaceum, MX 152 



Pectis, L 54 



angustif olia, Torr 54 



Pedicularis 



bracteosa, Bentli 97 



Canadensis, L 97 



crenulata, Bentli 97 



Grcenlandica, Retz 97 



Parryi, Gray 97 



procera, Gray 98 



racemosa, Dougl 97 



Sudetica . Willd 98 



Pellaja 



atropurpurea, Link 153 



gracilis, MX 153 



mucronata, Eaton . . 153 



Wrightii, Eaton 153 



Peltigera 



aphthosa, Hoffin 162 



canina, Holfni , . 162 



Pentstenion 



aeuuiinatus, Dougl 92 



albidus, Nutt 92 



alpinus, Torr 91 



ambigims, Torr 92 



OMtff02*K9,Nutt 92 



barbatus, Nutt 90 



cseruleus, Nutt 92 



caespitosus, Nutt 92 



confertus, Dougl 94 



cristatus, Nutt 93 



eyananthus, Hook 91 



Fremontii, Gray 91 



glaber, Pursli 91 



glaucns, Grah 93 



gracilis, Nutt 93 



Harbourii, Gray 93 



Hallii, Gray...' 93 



humilis, Nutt 93 



pubescens, Solander 93 



Page. 



Pentstemon Continued. 



eecundiflorus, Benth 92 



Torreyi, Bentli ; 91 



Pericome, Gray 68 



caudata, Gray 68 



Petalostenioii 



candidus, MX 23 



violaceus, MX 24 



Peucedanum 



nudicaule, Nutt 52 



Peziza 



8cutellata, L 164 



vulcanalis, Peck 164 



Phaca 



rnacrocarpa, Gray 27 



simplicifolius, Nutt 29 



Pkacelia 



circiuata, Jacq 103 



integrif olia, Torr 103 



Neo-Mexicana, Tliurb 103 



Popei, T. &G 103 



sericea, Gray 103 



tanacetif olia, Benth 103 



Phalaris 



arundinacea, L 152 



Pharomitrium 



subsessile, Schp 156 



Phascum 



Carnolicum, W. & M 155 



cuspidatum, Schreb 155 



Phegopteris 



Dryoptens, F6e 154 



Phelipsea 



Ludoviciana, Don 90 



Philadelphus 



microphyllus, Gray 41 



serpyllifolius, Gray 41 



Phleum 



alpiuum, L 142 



Phlox 



canescens, T. & G 105 



csespitosa, N 105 



Douglasii, Hook 105 



lougifolia, Nutt 105 



Phragmites 



communis, L 151 



Physalis 



angulata, L 110 



lobata, Torr 110 



Pennsylvanica, L 110 



pubescens, L 110 



viscosa, L 110 



Physaria 



didymocarpa, Gray 



Pliyscomitrium 



pyriforme, Brid 153 



tetragonum, Brid 158 



Pinus 



aristata, Engelni 130 



Balf onriana, Murr 130 



commutota,Pnrl 130 



contorta, Engelm 129 



edulis, Engelm 130 



flexilis, James 130 



ponderosa, Dougl 129 



Placodium 



bolacinum, Tuckerm 162 



callopismum, Ach 162 



cerinuin, Ach 16^ 



