210 
Sophora (sophora; 
etc.), 7, 87-89. 
secundiflora (mescalbean), 7, 87-89, 180. 
Sophorin, 89. 
Sorbus (mountain-ash), 7, 64-65. 
americana (American m.-a.), 65. 
key to species, ; 
occidentalis (alpine m.-a.), 64—65. 
sambucifolia (Siberian m.-a.), 
scoptlina (Greene m.-a.), 64, 6a. 
sitchensis (Pacific m.-a.), 64, 65. 
Sorilla, 91. 
Sotol (Dasylirion), 15. 
Texas (D. texanum), 
Sparhawk, William N., 4, “to, 134, 186. 
Spartein, 86 
Sphacele, 140. 
Sphaeralcea (globemallow), 115. 
Sphagnum, 131. 
Spicebush, Arizona, 83. 
Spines, 64, 65, 66, 69, 77, 78, 87, 89, 114, 
116, 118, 142. ‘See Thorns. 
Spiraea (spirea), 7, 58, 60, 180. 
discolor 58. 
discolor dumosa, 58. 
dumosa, 58. 
menziesii (Menzies s.), 60. 
Spirea (Spiraea), 7, 49, 58, 60, 99. 
Menzies (S. menziesii), 60. 
Sproat, W. J., 4. 
Spruce (Picea), 135. 
blue, 
Engelmann, 98, 132, mere 150. 
+Norway (P. abies), 1 
Sitka, 128, 131, 135. 
Spurge (Euphorbia and its segregates, Cham- 
aesyce, Tithymalus, etc.). 
beetle (Tithymalus crenulatus), 93. 
family, 6, 93-94. 
nettle (Jatropha spp.), 93. 
Palmer (T. palmeri), 938. 
Squaw-apple (Peraphyllum ramosissimum), 7, 
66, 179. 
Squawberry, 96. 
Squawbush, 96, 111, 121, 142. 
velvet, 96 
Squaw-carpet (Ceanothus a te 111. 
(Ceanothus diversifolius), 107. 
Squawthorn, 142. 
Staff tree family, 97—98. 
Staggerbush (Pieris mariana), 9 
Standardized Plant Names. 
Joint Committee on 
Nomenclature. 
Standing, Arnold R., 4, 25. 
Standley, Paul C., 4, "45, 75, 86, 89, 92, 
96, 104, 136, 138, 148, 165, 186, wee 189. 
Stanislaus National Forest, 93. 
Starleaf (Choisya dumosa), 91, 92. 
State Flower, 
Arizona, 118. 
Georgia, 46. 
Idaho, 40. 
Iowa, 46. 
Nevada, 168, 169. 
New Mexico, 118. 
New York, 46. 
North Dakota, 46. 
Oklahoma, 27. 
Oregon, 37. 
Washington, 133. 
Steeplebrush, 60. 
Steeplebush (Spiraea spp.), 60. 
Stenolobium incisum, 144 
Stans, 144 
Stenotus, 156. 
Sterculiaceae, 115. 
Stevenson, Matilda Coxe, 12, 154, 164, 186. 
Stewart, James O., 4. 
Stickerbush, 139, 
Stinkweed, 139, 
Stipa (needle grass), 161. 
columbiana (small Ne) LOL. 
minor, 161. 
Stizolobium pruriens (cowage), 19. 
scholartree: mescalbean, 
See American 
Horticultural 
INDEX 
Stomata, 115. 
Storax, California, 136. 
family, es 
Storm, Earl V., 4, 188. 
Strawberry- shetee ot. 
Stream control, 121. 
Strombocarpa (screwbean), Sialic 
cinerascens (dwarf s.), 77. 
odorata (screwbean), 77, 78. 
pubescens, TT. 
Strychnin, 37. 
Styracaceae, 136. 
Styrax (snowbell), 136. 
californica (California s.), 136, 180. 
officinalis californica, 136. 
Succession, plant, 15, 53, 97, 109, 119, 144. 
climax type, 15, 169. 
pioneer species, 97, 109. 
Sudworth, George B., 10, 21, 23, 25, 63, 
67, 77, 79, 80, 87, 98, 104, 137, 186. 
Sumac (Rhus), 9, 96-97. 
Emory (R. emoryi), 96-97. 
evergreen (R. virens), 97. 
family, 95-97. See Anacardiaceae and 
Cashew family. 
lemonade (R. trilobata), 96. 
littleleaf (R. microphylla), S6n one 
poison (Toxicodendren vernix), 97. 
Rocky Mountain (R. cismoniana), 96. 
sweet-. See Sweet-sumac. 
three-lobed, 96. 
Utah (R. utahensis), 96. 
Sunflower, desert, 164. 
tribe, 164-166. 
Supplemental feeding, 34. 
Suwarro. See Saguaro. 
Svida, 119. 
Stolonifera riparia, 121. 
Sweetbrier, ‘ 
Sweetbrush, 43. 
Sweet cicely, 65. 
+Sweetpotato, 154. 
Sweet-scented shrub, 37. 
Sweetshrub (Calycanthus), 37-38. 
California (C. occidentalis), 37—38. 
family, 37—38. 
Sweet-sumac, 96. 
Swine, 21, 76, 102. 
Symphoricarpos (snowberry; 
149-152, 180. 
albus (common s.), 150, 151-152. 
mollis (spreading s.), 150, 152. 
occidentalis (western s.), 152. 
oreophilus (mountain s.), 150—151. 
racemosus. See S. albus. 
rotundifolius (roundleaf s.), 152. 
vaccinioides (whortleleaf s.), 151, 152. 
a 
coralberry), 
Tahoe National ein 107. 
Talbot, M. W., 51. 
Tanbark, 123. 
dwarf, 19. 
Tanglebush, 137. 
Tannic acid, at, aoe 23. 
poisoning 
Tannin, 9, oer 
Tanning, 22) Ti. 9G: 
Tanoak (Lithocarpus; L. densiflora), 19—20. 
scrub (L. densiflora echinoides), 19-20. 
Tansybush (Chamaebatiaria millefolium), 55. 
Taparosa, 144. 
Tar-bush (Flourensia cernua), 165. 
(Chamaebatia foliolosa), 55. 
Tarragon, false (Artemisia ‘dracunculoides), 
Tarweed, 55. 
Tasajillo(-a) (Opuntia spp.), 116. 
Tasseltree, 122. 
Taste, qualities of, 6, 9, 27, 28, 34, 37, 50, 
53, 57, 64, 66, 68, 69, 70, 9 
105, 107, 119, 121) 122, 128, 133, "145, 
156, 160, 161, 165, 169, 175. 
Taxaceae, 10. 
Taxin, 12. 
