INDEX. 125 



Page. 

 Prickly pear. See Pear, prickly. 



Prilleaux, E. E., and Delacroix, G., on occurrence of bacterial leaf-spot 83, 108 



Primrose, evening, occurrence of powdery mildew in Texas 94 



Privet, diseases in Texas 77, 109, 111 



Prosopis glandulosa. See Mesquite. 



Prunus spp., diseases in Texas 25, 31-32, 111 



Psedera spp 70, 80, 109 



Pseudopeziza medicaginis, occurrence on alfalfa in Texas 48 



Puccinia spp., occurrence on plants in Texas 34, 46, 47, 51, 52, 92, 94-99, 101-104 



Punica granatum. See Pomegranate. 



Purslane, occurrence of white-rust in Texas 101 



Pyrus communis. See Pear. 



Quercus spp. See Oak. 



Raciborski, M., on occurrence of leaf-spot on cowpea in Java 49, 108 



Radicula nasturtium-aquaticum. See Cress, water. 



Radish, culture and diseases in Texas 20, 42 



Ragweed, giant, diseases in Texas 95 



Rain lily. See Lily, rain. 



Rainfall, annual, for region studied in Texas 15-16 



Ramularia spp., occurrence on plants in Texas 61, 67, 69, 82, 101-102, 110 



Raphanus sativus. See Radish. 



Raspberry, nonoccurrence in region studied in Texas 20 



Ravenelia spp. , occurrence on plants in Texas 63, 73, 102 



Redbud, diseases in Texas 77-78 



Reed-grass. See Grass, reed. 



Retama, occurrence of sooty mold in Texas 78, 111 



Rhabdospora sp., association with scald on Opuntia 101 



Rhizoctonia disease. See Disease, Rhizoctonia. 



spp., occurrence on plants in Texas 23, 38-44, 111 



Rhus spp. , diseases in Texas 76, 78 



Rhysotheca geranii, occurrence on crane's-bill in Texas 92-93 



Rhytisma erythrosporum. See Tar-spot. 



Rice, jungle, use and occurrence of disease in Texas 21, 52 



region of plantings in Texas 21 



Ricinus communis. See Bean, castor. 



Rivina laevis, occurrence of leaf-spot in Texas 101 



Robinia pseudacacia. See Locust, black. 



Rolfs, F. M., on occurrence of die-back on the apricot 25, 108 



Root-knot, occurrence on plants in Texas 26, 38-41, 44, 85, 111 



rot, occurrence on truck crops in Texas 38, 39, 40, 41, 43, 44 



various (other) plants in Texas. 26, 48, 49, 55-57, 59, 80, 83, 111 



Rhizoctonia, occurrence on plants in Texas 39, 40, 41, 42, 43, 44, 111 



Texas, list of host plants in Texas 55 



Rorer, J. B. , on bacterial disease of the peach 29, 108 



Rosa spp., diseases in Texas 88 



Rot and blight. See Blight and rot, blossom end. 



Rubus spp. See Blackberry and Dewberry. 



Ruellia tuberosa, occurrence of rust in Texas 101 



Rumex berlandieri. See Dock. 



Rust, cedar, occurrence on Juniperus in Texas 63 



crown, leaf, and stem 47 



226 



