XII. INDEX 



(Page numbers in parentheses) 



Algae, Anabaena spp. - Submersed weeds (46, 47) 



Arrowhead, Sagittaria spp. - Emergent and marginal weeds (48) 



Barnyard grass, Echinochloa crusgalli - Flax (21, rice (23) 



Bermudagrass, Cynodon dactylon - Grapes (31), broadleaved perennials (40), 



perennial grasses, rushes, and nutsedges (41, 42), ditchbank weeds (44) 

 Big sagebrush, Artemisia tridentata - Pasture and range (37) 

 Bitterweed, Helenium tenuifolium - Legume seedlings (34), pastures (36) 

 Bladderwort, Utricularia spp. - Submersed weeds (46, 47) 

 Boneset, Eupatorium spp. - Pastures (36) 



Buckbrush, Synnphoricarpos orbiculatus - Pastures and range (37) 

 Buckhorn plantain, Plantago lanceolata - Lawns and turf (50) 

 Bulrushes, Scirpus spp. - Emergent and marginal w^eeds (48) 

 Burclover - Medicago hispida - Lawns (50) 

 Burdock, Arctium minus - Pastures (36) 

 Canada thistle, Cirsium arvense - Flax (21), peas (28), pastures (36), see 



also, broadleaved perennials (40) 

 Canarygrass, Phalaris spp. - Ditchbank weeds (43) 

 Cattails, Typha spp. - Emergent and marginal w^eeds (48) 

 Cheat, Bromus secalinus - Alfalfa (35) 

 Chickweed, Stellaria media or Cerastium spp. - Brambles (30), legume 



seedlings (34), legumes (35), lawns and turf (50) 

 Chicory, Cichorium intybus - Pastures (36) 

 Cocklebur, Xanthium spp. - Corn (18), small grains (20), flax (21), cotton 



(21, 22), soybeans (22), peanuts (23) 

 Coffeeweed, Daubentonia texana - Rice (23) 



Coontail, Ceratophyllum demersum - Submersed -weeds (46, 47) 

 Crabgrass, Digitaria spp. - Corn (18, 19), cotton (21, 22), soybeans (22), 



peanuts (23), rice (23), legume seedlings (34), lawns and turf (50) 

 Curly dock, Rumex crispus - Pastures (36), lawns and turf (50, 51) 

 Curly indigo, Aeschynonnene virginica - Rice (23) 

 Dallisgrass - Paspalum dilatatum - Lawns (50) 



Dandelion, Taraixacum officinale - Pastures (36), lawns and turf (50, 51) 

 Deathcamus, Zigadenus venenosus - Pasture and range (37) 

 Dodder, Cuscuta spp. - Alfalfa (35) 



Dogbane, Apocynum cannabinum - See broadleaved perennials (40) 

 Field bindw^eed. Convolvulus arvensis - Corn (18), small grains (20), see 



also, broadleaved perennials (40) 

 Foxtail, Setaria spp. - Corn (18, 19), flax (21), cotton (21, 22), soybeans (22), 



rice (23), legume seedlings (34) 

 Goosegrass - Eleusine indica - Lawns (50) 

 Halogeton, Halogeton glomeratus - Pasture and range (38) 

 Henbit, Lamium amplexicaule - Legumes (35), lawns and turf (50) 

 Horsenettle, Solanum carolinense - See broadleaved perennials (40) 

 Horsetail, Equisetuna arvense - See perennial grasses, rushes, and sedges (41, 42) 



Johnsongrass, Sorghum halepense - Grapes (31), perennial grasses, rushes, 

 and sedges (41, 42), ditchbank weeds (43) 



Knotweed, Polygonum aviculare - Lawns and turf (50) 



Lambsquarters, Chenopodium album - Corn (18, 19), small grain (20), flax 

 (21), cotton (21, 22), soybeans (22), peanuts (23), beans (26), Irish 

 potatoes (29), legume seedlings (34) 



Larkspur, Delphinium spp. - Pasture and range (38) 



Leafy spurge. Euphorbia esula - See broadleaved perennials (40) 



Loco, Oxytropis spp. - Pasture and range (37) 



Lotus, Nelumbo lutea - Emergent and marginal weeds (48) 



Marshelder, Iva xanthifolia - Flax (21) 



Mesquite, Prospopis juliflora - Pasture and range (37) 



Morningglory, annual, Ipomoea purpurea - Corn (18), cotton (21, 22), soy- 

 beans (22), peanuts (23) 



- 59 - 



