INDEX. 127 



Page., 



Specimens, herbarium, of plant diseases 11-12 



See also names of different diseases. 



Sphacelotheca spp., occurrence on plants in Texas 53, 54 



Sphaerella gossypina, occurrence on cotton in Texas 55 



Sphaeropsis malorum, occurrence on plants in Texas 24, 27, 29 



Sphaerotheca spp., occurrence on the rose in Texas 88 



Spinach, culture and diseases in Texas 20, 43 



Spinacia oleracea. See Spinach. 



Sporodesmium maclurae, occurrence on Osage orange in Texas 75, 110 



Squash, culture and diseases in Texas 20, 43-44, 111 



Stachys drummondii. See Mint. 



Stagonospora gigantea, occurrence on century plant in Texas 84, 110, 112 



macrospora, comparison with S . gigantea 84 



Standing cypress. See Cypress, standing. 

 Stem anthracnose. See Anthracnose, stem. 



rot, occurrence on China aster in Texas 84 



rust, occurrence on cereals in Texas 47 



Stemphilium tritici, occurrence on wheat in Texas 47 



Sterility, floret, occurrence on wheat in Texas 47 



Stewart, F. C, French, G. T., and Wilson, J. K., on diseases of plants 48, 108 



Stinking smut. See Smut, stinking. 

 Stipa leucotricha. See Grass, feather. 



Stock, live, area devoted to industry in Texas 21 



Strawberry, culture and diseases in Texas 19, 34 



Sumac, occurrence of leaf-spot in Texas 78 



Sunflower, diseases in Texas 103 



Sunlight, relation to plant diseases in Texas 22-23 



Survey, plant disease, character and extent of region studied in Texas 12-14, 24 



object of work in Texas 11 



plan of work in Texas 23-24 



See also Altitudes, Climate, Crops, Diseases, Fruits, Physiography, Vegetation, 

 etc. 

 Swamp cypress. See Cypress, swamp. 

 Sweet alyssum. See Alyssum, sweet. 

 pea. See Pea, sweet, 

 pepper. See Pepper, sweet, 

 potato. See Potato, sweet. 



Sycamore, diseases in Texas 78-79, 110, 111 



Symphoricarpos orbiculatus, occurrence of powdery mildew in Texas 79 



Symptoms, importance of field observations 23 



Syntherisma sanguinalis. See Grass, crab. 

 Syringa sp. See Lilac. 



Tar-spot, occurrence on the oak in Texas 75, 111 



Taxodium distichum. See Cypress, swamp. 

 Tecoma radicans. See Creeper, trumpet. 



Temperatures, data for region studied in Texas 17, 18, 19 



high, relation to plant diseases in Texas * 20, 22, 23 



Tertiary, forested area in Texas, description 14 



Texas, occurrence of plant diseases. See names of different diseases.. 



root-rot. See Root-rot, Texas. 

 Tick trefoil. See Trefoil, tick. 

 Tillandsia recurvata. See Moss, ball and Spanish. 

 226 



