42 BULLETIN 1201, tf. S. DEPARTMENT OF AGRICULTURE. 



Lycopersicum esculentum Mill. Solanaceae. Synonyms: L. lycopersicum 

 Karst., Solarium lycopersicum L. Tomato. South America, cultivated every- 

 where. 



Von Mueller (91, p. 509) says : " Tomato foliage may be placed 

 round fruit trees, like the equally poisonous potato leaves, to prevent 

 the access of insects, and an infusion of the herb serves also as an 

 insecticide for syringing, as first adopted by Mr. Sircy." 



Makaida (55) claims to have determined in 1914 that tomatoes, 

 planted near cucumbers, melons, and watermelons, protect these 

 plants against aphids. 



Schreiber (80) and Vostrikov (92) recommend the growing of 

 tomatoes near cabbage beds to drive away cabbage butterflies, and 

 they suggest the use of tomato extracts to control the cabbage cater- 

 pillars. Schreiber (79) suggests the use of a decoction of tomatoes 

 against the pests of raspberries and dewberries. 



Schreiber (81) found a concentrated extract of tomatoes very 

 effective against aphids and various other market-garden pests, but 

 Goriainov (29) , also testing the decoctions of various plants against 

 insects in Russia, carried on his experiments at the Entomological 

 Bureau of Riazan and determined that a decoction of tomatoes gave 

 only insignificant results against Malacosoma neustria,. 



Crouzel (20) says : " It is stated that an Italian vine grower, hav- 

 ing planted tomatoes between the rows of vines in a vineyard badly 

 infested with Phylloxera, was gratified to note fresh, healthy shoots 

 break forth from the withered stocks, while numbers of dead Phyl- 

 loxera insects were found around the roots of the tomato plants." 



The writers' results are given on page 8. 



Lycopodiuni complanatum L. Lycopodiaceae. Groundcedar. Europe, Asia, 

 and North America. 



Williams (94, p. 924) reports that the decoction kills lice. 



Lycopodium selago L. Fir clubmoss. Northern hemisphere. 



Greshoff (SI, p. 165) lists it as an insecticide. 



Lysimachia nummularia L. Pkimulaceae. Moneywort. Europe, natural- 

 ized in the United States. 



Porcher (68, p. 509) reports that the leaves and flowers, steeped 

 in oil, have the power of destroying insects and worms which infest 

 granaries. 



Madhuca sp. Sapotaceae. Synonyms : Bassia, Illipe. East Indies. 

 The writers' results are given on page 23. 



Marrubium vulgare L. Menthaceae. Common hoarhound. Europe and 

 Asia, naturalized in the United States. 



Riley (71, p. 185) reports that the decoction and alcoholic extract 

 had no effect on cotton caterpillars. 



Matricaria chamomilla L. Asteraceae. Synonyms : Chrysanthemum chamo- 

 milla Bernh., Chamomilla vulgaris S. F. Gray, Chamomilla officinalis Koch. 

 German false-camomile. Europe and Asia, naturalized in the United States. 



Schenck (82) reports that the flower heads of the common camo- 

 mile have an action similar to that of genuine Persian insect powder. 



Gieseler (26) says that heads of this plant exert an effect on in- 

 sects similar to that exerted by pyrethrum. 



