Illustrations Cornus Viola pubescens Oenothera gayleana Castilleja sessiliflora forma purpurescens Phycodurus eques Penstemon rostriflorus Penstemon deustus Penstemon pachyphyllus Penstemon pachyphyllus Carnation var. Packera plattensis Platanthera leucophea Castilleja levisecta Phlox divicularta Cirsium hillii Arisaema dracontium Oenother harringtonii Castilleja affinis ssp neglecta Castilleja coccinea Oenothera primiveris