3°6 



INDEX 



[454 



References to the Flora are in brackets 1 ~\ 



Spike-rush [79 



flat-stemmed [79 



needle [79 



slender [79 



swamp [79 



pale [79 



SPINOSAE 18, 19 



Spiraea dumosa [147 



Spleenwort [51 



Andrews's [51 



maiden-hair [51 



SPONDIACEAE [167 



Sporobolus [63 



airoides 15, [63 



asperifolius 15, [63 



cryptandrus 15, [63 



cuspidatus [61 



depauperatus [61 



heterolepis 15, [63 



simplex [62 



Spring beauty [114 



large-rooted [114 



rosy [114 



water [114 



Chamisso's [114 



Spruce 24,31,38,39,40, [53 



blue [53 



Douglas 24,25, [53 



Engelmann 36, 39, [53 



Spurge 44, [164 



Arkansas [165 



Fendler's [164 



mountain [165 



nettle [164 



ridge-seeded [164 



rugulose-seeded [164 



stout [165 



thyme-leaved [164 



toothed [166 



warty [166 



white-flowered [164 



Spurge family [163 



Squawweed 34 



Squirrel-tail grass [77 



Stachys [206 



scopulorum 11, [206 



Stanleya [135 



glauca 15, [135 



Stanley's cress, glaucous [135 



Star-flower [229 



annual [229 



spinulose [229 



Star thistle [255 



Starwort [115], [233 



James's [115 



Lake Baical [115 



water 10, [166 



State flower of Colorado... .40, [119[ 



Steironema [ 188j 



ciliatum 21, 23, [188] 



Stellaria Jamesiana [115] 



longijolia [115] 



longipes [1 15] 



media [115] 



stricta [115] 



umbellata [115] 



Stephanomeria runcinata [255] 



Stickseed [200] 



cupulate [200] 



large-flowered [200] 



narrow-leaved [200] 



western [200] 



Sticktights 10 



common [244] 



Stiff golden rod, hoary [232] 



Stink-grass [68] 



purple [68] 



Stipa [60] 



comata 15,18,27, [60] 



Lettermannii [61] 



Nelsonii _ 15,27, [60] 



parviflora Americana [60] 



Scribneri 27, [60] 



viridula 15, 18,27, [60] 



Stitchwort, long-leaved [115] 



long-pedicelled [115] 



strict [115] 



Stone-crop [136] 



Storksbill [163] 



hemlock [ 1 63] 



Strawberry [143] 



American [143] 



bracted [143] 



glaucous [144] 



prolific [144] 



small-flowered [144] 



Streptopus [93] 



amplexifolius 28, [93] 



Stylosanthus laciniatus [238] 



Suaeda depressa [HI] 



depressa erecta [Ill] 



SUBALPESTRES 9, 36 



Subalpine flora 9, 23, 36 



Subalpine forest formation 36 



Subalpine stream formation 36, 37 



Subalpine summit flora 37 



Subalpine zone 36 



Subaquatic flora 10 



SUBMONTANAE 9, 23 



Sumach [167] 



cismontane [167] 



fragrant [167] 



three-Iobed [167] 



Sunflower 13, [242] 



