272 



[420 



References to the Flora are in brackets r 1 



Arenaria [116] 



Fendleri 41, [116] 



diffusa [116] 



obtusa ■ [116] 



propinqua [116] 



Tweedyi.... . 41, [116] 



verna aequicaulis [116] 



Argemone [126] 



bipinnatifida [126] 



hispida 14, [126] 



intermedia . . . 14, 18, [126] 



Arid brush slope society.. . .31, 34 



ARIDAE 13, 15 



Aristida [60] 



fasciculata IS, [60] 



longiseta 15, [60] 



Armoracia [130] 



Armoracia 46, [130] 



Arnica [248] 



Chamissonis longinodosa . . . -[248] 



cordifolia 26, [248] 



eradiata [249] 



monocephala [249] 



Parryi 37, 42, [249] 



parvifolia [248] 



pedunculata 20, [248] 



platyphylla 42, [248] 



pumila [248] 



Rydbergii [248] 



subplumosa 35, [248] 



Arnica [248] 



broad-leaved [248] 



dwarf [248] 



heart-leaved [248] 



Parry's [249] 



peduncled [248] 



Rydberg's [248] 



single-headed [249] 



subplumose [248] 



Arrowwood [221] 



Artemisia [246] 



biennis 34, [247] 



Brittonii... .16, 19, [247] 



Chamissoniana saxatilis [247] 



desertorum Scouleriana [246] 



diversifolia [247] 



dracunculoides 16, 19, [246] 



Forwoodii 19, [246] 



frigida 19, 43, [247] 



gnaphalodes IS, [247] 



saxicola [247] 



silvicola 32, [247] 



scopulorum [247] 



Scouleriana [246] 



spithamaea 42, [247] 



tridentata 34, [248] 



Arum family [87] 



ASCLEPIADACEAE [194] 



ASCLEPIADALES [193] 



Asclepias [194] 



brachystephana [194] 



incarnata [194] 



pumila 16, [194] 



speciosa 14, [194] 



stenophylla [194] 



verticillata pumila [194] 



Asparagus [94] 



officinalis 46, [94] 



Asparagus, common [94] 



Aspen 33,47, [98] 



American [98] 



quaking 32 



Aspen society 24 



Aspidium Filix-mas [49] 



Asplenium [51] 



Andrewsii 30, [51] 



septentrionalis [51] 



Trichomanes 30, [51] 



Aster [233] 



adscendens [235] 



Andrewsii 32, [235] 



Bigelovii [235] 



ciliatus [233] 



coerulescens 12, [234] 



commutatus 15, [234] 



crassulus 16, [234] 



Eatonii [235] 



Engelmannii [233] 



exiguus 16, [233] 



foliaceus Eatonii [235] 



glaucus [233] 



incanopilosus [234] 



laetevirens [234] 



laevis 26, [234] 



Nelsonii [233] 



Osterhoutii 12, [234] 



Pattersonii [235] 



polycephalus 16, 26, [234] 



Porteri 26, 32, [234] 



salicifoUus coerulescens.. ... .[234] 



Underwoodii 32, [233] 



violaceus [233] 



Aster 31 



Andrews's [235] 



ascending [235] 



Bigelow's [235] 



coerulean [234] 



ciliate [233] 



Eaton's [23S] 



Engelmann's [233] 



golden [227] 



glaucous [233] 



harsh [235] 



light-green-leaved [234] 



