INDEX 221 



Peraphyllum ramosissimum; squawapple__. 74,138 



Philadelphia lewisii; Lewis mockorange 96, 160 



Phyllodoce; mountainheath 



= Bryanthus 



empetriformis; red m 169 



— Bryanthus empetriformis 



glanduliflora; cream m 1 69 



Physocarpus; ninebark 



= Opulaster 



malvaceus; mallow n 42, 127 



= Opulaster malvaceus 

 = Physocarpus pauciflorus 



pauciflorus. See P. malvaceus. 

 Picrothamnus desertorum. See Artemisia spinescens. 

 Pipsissewa (or princes-pine) ; Chimaphila 



Menzies; C. menziesii 176 



western ; C. umbellata var. occidentalis 176 



Plum, Klamath; Prunus subcordata 54 



Poison-ivy, western; Toxicodendron radicans var. rydbergii __ 87, 136 



Poison-oak, Pacific; Toxicodendron diversilobum 87,136 



Populus; aspen, cottonwood 



aurea. See P. tremuloides. 



hastata. See P. trichocarpa. 



tremuloides; quaking a 28, 1 19 



— P. aurea 



= P. tremuloides var. aurea 

 tremuloides aurea. See P. tremuloides. 

 trichocarpa; black c 28, 119 



= P. hastata 



= P. trichocarpa var. hastata 

 trichocarpa var. hastata. See P. trichocarpa. 

 Potentilla; cinquefoil 



fruticosa; bush c 84, 140 



= Dasiphora fruticosa 

 Prunus; cherry, chokecherry, plum 

 = Cerasus 

 = Padus 



demissa. See P. virginiana var. demissa. 

 emarginata; bitter cherry 53, 147 



= Cerasus emarginata 



= Cerasus mollis 



= Prunus emarginata var. crenulata 



= Prunus emarginata var. erecta 



= Prunus emarginata var. mollis 



= Prunus emarginata var. villosa 

 emarginata crenulata. See Prunus emarginata. 

 emarginata erecta. See Prunus emarginata. 

 emarginata mollis. See Prunus emarginata. 

 emarginata villosa. See Prunus emarginata. 

 melanocarpa. See Prunus virginiana var. melanocarpa. 

 oregana. See Prunus subcordata. 

 subcordata; Klamath plum 54 



= Prunus oregana 



= Prunus subcordata var. oregana 

 subcordata oregana. See Prunus subcordata. 

 Virginia; common chokecherry -- 54, 147 



= Padus virginiana 

 virginiana var. demissa; western common chokecherry. _ 54, 14* 



= Cerasus demissa 



= Padus demissa 



= Prunus demissa 

 virginiana var. melanocarpa; black common chokecherry 54, 147 



= Cerasus demissa var. melanocarpa 



= Padus melanocarpa 



— Padus virginiana var. melanocarpa 

 = Prunus melanocarpa 



