272 



American Midland Naturalist Monograph No. 4 



rotundifolia 1 76 



Silktassel 1 77 



family 1 77 



Fremont I 77 



yellowleaf 1 78 



Silverberry 1 76 



Skunkbush sumac 155 



Snakeweed 236 



broom 236 



sticky 237 



Snowberry 2 1 4 



common 214 



longflower 21 7 



mountain 21 7 



roundleaf 2 1 6 



sharpieaf 2 1 6 



spreadmg 21 5 



Washington 2 1 5 



Snowbrush ceanothus 169 



Solanaceae 208 



Sorbus 109 



californica (see S. sitchensis) 

 cascadensis (see S. sitchensis) 



dumosa 1 1 1 



occidentahs 1 10 



scopulina 1 10 



sitchensis 1 10 



var. densa 110 



Southwest Region 13 



Spanish bayonet 36 



Spicebush 79 



Spiraea 1 33 



broadleaf meadowsweet 134 



caespUosa (see Petrophytum) 



densiflora 133 



discolor (see Holodiscus) 



Douglas 135 



Douglasi 135 



dumosa (see Holodiscus discolor var.) 

 Hendersoni (see Petrophytum) 



latifolia 1 34 



lucida 133 



Menzies 135 



Menziesi 135 



salicifolia (see S. latifolia) 



shinyleaf 133 



splendens (see S. densiflora) 



subalpine 1 33 



Spruce 19 



black 19 



blue 19 



Englemann 19 



Sitka 19 



white 19 



Spurge Family 150 



Squaw-apple 123 



Squaw carpet ceanothus 170 



Staff-tree family 156 



Staphylea Bolanderi 157 



Staphyleaceae 157 



Stenolus armerioides (see Aplopappus) 

 falcalus (see Aplopappus acaulis var.) 



Sferculia family 173 



Sterculiaceae 1 73 



Suaeda Torreyana 75 



Sumac 1 54 



family 153 



skunkbush 155 



smooth 1 55 



staghorn 156 



Sunflower family 228 



Sweet-bay 66 



Sierra 66 



Sweet-gale 67 



family 66 



Sweetshrub, California 79 



Sycamore, California 24 



Symphoncarpos 214 



acutus 216 



albus 2 1 4 



var. laevigalus 215 



hesperius 215 



longiflorus 21 7 



mollis 215 



occidentalis 215 



oreophilus 217 



Panshi 217 



pauciflorus 215 



racemosus (see S. albus) 



rividaris (see S. albus var. laevigatus) 



rotundifolius 216 



tetonensis 2 1 7 



utahensis 2 1 7 



vaccinioides 2 1 7 



Syrmga 81 



Tamaricaceae 1 74 



Tamarisk, family 174 



French 1 74 



Tamarix gallica 174 



Tansybush 100 



Taxus 29 



brevifolia 29 



canadensis 30 



Tetradymia 235 



axillaris 235 



canescens var. inermis 235 



spinosa 235 



Thamnosma montana 152 



Thimbleberry, western 108 



Thornapple 1 18 



Thuja occidentale 21 



plicata 21 



Torreya californica 18 



Toxicodendron 1 53 



diversilobum 1 54 



