INDEX 



283 



Influence of age of plant, 13 



Intermittent, occurring at intervals. 



Intoxication, the resulting state from an 

 overdose of poison. 



Intravaginal branching, 124 



Insect powders, 231 



Insertion, the place where the floral 

 parts are attached. 



Involucre, the collection of bracts which 

 surround branches of the inflorescence, 

 or clusters of flowers, as in the sun- 

 flower family. 



Involute, rolled inwards from the edges. 



Ipomoea batatas, 225 



Irregular, said of flowers in which the 

 parts are of unequal shapes and sizes. 



Irritant poisons, 9 



Irritants, 12 



Italian rye grass, 141 



Jamestown weed, 100 



Japan clover, 187, 208 



Jasmine, 230 



Java bean, 71 



Jerusalem artichoke, 225 



Jervin, 51 



Jimson weed, 100 



Johnson grass, 145 



Jones, Jesse, Co., mentioned, 154 



Juglans californica var. Hindsii pollen as 



a cause of hay-fever, 114 

 June grass, 131; adaptability of, 135; 



seeding of, 136 

 Juniper, 43 



Juniperus communis, 43 

 Jute, 228 



Kaffir, 128, 236 



Kale, 229 



Kalmia angustifolia, 92; latifolia, 93 



Kentucky blue-grass, 129, 133; a weed 



in New Zealand, 136 

 Kino gum, 184 

 Koernicke quoted, 168 

 Kohl-rabi, 227 

 Kolmer, Dr. John A., mentioneVl, vii; 



experiments with phytotoxins, 27 



Kowliang, 128, 236 



Kraemer, Henry, methods quoted, 97 



Krastov wheat, 167 



Kubanka wheat, 167 



Kudzu, 212 



Kus-kus, 129 



Lachnanthes tinctoria, the pigment in, 52 

 Lacquer as a poisonous material, 81 

 Lactuca sativa, 229 . 



Ladino clover, 196 

 Lady slipper orchid, as a poisonous plant, 



5 2 

 Lamb kill, 92 



Lanceolate, lance-shape. 



Larkspurs as poisonous plants, 60 



Latex in Euphorbia splendens, 85 



Lathyrus odoratus, 185 



Lathyrus sativus, 212 



Lathyrus tetragonolobus, 212 



Leaf crops, 229 



Leaves of grasses, 125; of Leguminosae, 181 



Lecheguila, 213 



Leek,' 22 7 



Legislation about weeds, 257 



Legume, 183 



Leguminosae, characteristics of, 181; roots 

 of, 181 



Leguminous leaves, 181; crops as green 

 manure, 223; crops, encouragement 

 of, 223; forage plants, 187-217; 

 stems, 181 



Lemma, the outer floral scale immediately 

 beneath the grass flower. 



Lemma of grasses, 126 



Lemon, 235 



Lens, 184 



Lentil, 184 



Lepidium virginicum, 255 



Lespedeza striata, 208 



Lethal, deadly, usually applied to doses. 



Lettuce, 229 



Ligule, the membranous outgrowth be- 

 tween the blade and sheath in grass 

 leaves; rain-guard. 

 Ligule of grasses, 125 



