EXPERIMENT STATION REPORT. 455^ 



Nevada Station Bulletin 15, January, 1892, p. 8, Dodder, F. H Hillman (Fig. 5); 

 gives a general account of plants of the genus Cuscula and brief descriptions of 

 Cuscuia epilhymum, C. arvensis, and C. denticulata, with suggestions regarding meana 

 for the repression of these parasites. The first-named species is prevalent on alfalfa 

 in Nevada. Seeds of C. arven»is were found in imported alfalfa seed. The first 

 year's growth of alfalfa (from three seeds) showed the efi'ect of the presence of the 

 , parasite in the yellowish-red patches of repressed plants, about which the dodder 

 formed a dense mat, E. S. R., III., p. — . 



Weeds of Calfornia, E. W. Hilgard, pp. 238-252, mentions in list of troublesome 

 weeds, Oiucuia trifolia, C. salina. E. S. R., III., p. 698. 



Weed Pests, L. H. Pammel, pp. 72-72, mentions dodder {Cuscuta trifolia). E S. R., 

 III., p. 217. 



Oregon Weeds, M. Craig, Oregon Station Bulletin 19, May, 1892, p. 21, plate 19, 

 mentions dodder {Citscuia racemosa) among "the worst weeds in Oregon." E. S. R., 

 IV., p. 47. 



Contributions from the botanical laboratory and seed-control station of Hamburg, 

 No. 3, 1883, O. Burchard, p. 20. In the investigation for dodder seed in 60 samples 

 of red clover, 28 were absolutely free from dodder, 4 contained from 4 to 10 

 per pk., and 28 contained from 14 to 11,310 per kg. The species most common was 

 Cuscuta trifolii, with occasionally C. Europea, and more rarely C. epilinum. The 

 species found in North American seed was principally C. racemosa. The white 

 clover examined gave 50 per cent, dodder free, the rest containing from 12 to 684 

 seeds per kg. Alsike clover gave 42 per cent, free, and the rest from 36 to 1,129 

 seed per kg. One lot of lucern from South America contained 23,600 seeds of C. 

 chilonsis per kg., and no samples were dodder free. Yellow clover was free from 

 dodder in every case. In two samples of timothy 20 to 284 seeds of C. cpithynum 

 were found. E. S. R., V., p. 334. 



Weeds of Ontario, J. H. Panton (Ontario Agricultural College Bulletin 91, No- 

 vember 15, 1893, p. 7, Fig. 4), mentioned among 25 worst weeds in Ontario dodder 

 {Cuscuta trifolii). E. S. R., V., p, 529. 



Concerning the origin of American clover seed, O. Burchard (Landw. Vers. Stat. 

 43, 1893), Nos. 3 and 4, pp. 239-346. 



Named among a list of seeds that characterize all American clover seed, probably 

 Cuscuta racemosa of that from the Eastern and Atlantic States. E S. R., V., p. 912. 



A method of destroying dodder. C. Servak (Ingen. Agr. Gembloux 5 (1895) No. 

 8, pp. 354-355). The plants on the spots where dodder is present are carefully 

 removed and burned, the spot is worked with hoe or rake, and orchard grass or 

 some other quick-growing species is planted on the infested spot. The author states 

 that dodder thus treated may be entirely eradicated within two years. E. S. R., VI., 

 p. 823. 



Notes on the chemical history of Cuscuta, G. Barbey (Jour. Pharm. et Chem. 6, 

 ses. 15 (1895) 11, No. 3, pp. 107-112), E. S R., VII., p. 407. 



On the destruction of Cuscuta, L. Degriilly (Prog. Agr. et Vit 12 (1895), No. 51, 

 p. 655). 



Methods are suggested for the eradication of tiie various species of this plant. E. 

 8. R, VII., p 511. 



Dodder on garden vegetables, B. D. Halsted ; Garden and Forest 9 (1896), No. 

 646, pp. 565, 566, pi 1. Notes are given on a species of Cuscuta growing on onions 

 and eggplants. E. S. R , VIII., p. 234. 



