28 MISC. PUBLICATION 40 6, U. S. DEPT. OF AGRICULTURE 



Crotalaria spp. 



Beelet 1939 (14): Frequently found infested. Malaya. 



McKee 1937 (150): All species are "practically if not entirely immune." 



Menzel 1929 (161): Infestation must be reckoned with in certain cases. 



Netherland East Indies. 

 Watson 1933 (256) : 17 species tested in heavily infested plots; no nematodes 



found on roots of any species. Florida. 

 Watkins 1929 (248): "Resistant" (annual ornamental). Florida. 



Cucurbita maxima, squash. (N, S) 



Li and Lei 1938 (188): Vars. Early Yellow Scallop, Italian Marrow, and 

 Table Queen "less infected" (experimental; five plants each). China 

 (Lingnan) . 



The family Cucurbitaceae is generally considered as one of the most frequently 

 and severely infested. 



Currant, see Ribes. 



Cyamopsis tetragonoloba, cluster-bean, guar. (C) 



Besset 1911 (16): Nematodes abundant, injury apparent!}' not great. 

 Krishna Atyar 1933 (182) : Infestation abundant in pot experiment. India 



(Madras). 

 Mackie, W. W. (California station; in letter, 1939): Highly resistant; 

 ordinarily only a trace of root knot; tested many years in the worst 

 infested area. 



Cydonia oblonga (C. vulgaris), common quince. (C, N) 



Bessey 1911 (16): Nematodes abundant, injury apparently not great. 



Minz, G. (Research station, Rehovot, Palestine; in letter, 1940): Found 

 infested in Palestine. 



Tatjbenhaus and Ezekiel 1933 (226): Losses rarely serious. Texas. 



Ttjfts and Day 1934 (234): No galls found on cuttings of Yars. Angers 

 (selection Gregory), Antequera (P. I. No. 33214), Burbank, Orange, 

 Rea, and the East Mailing stocks A, C, and D (2 years in Delhi nursery). 

 California. 



Watson and Goff 1937 (258) : Quince rated as No. 45 in order of suscepti- 

 bility [from okra, No. 1, to corn, No. 46]. Florida. 



Whittle and Drain 1935 (263) : Quince listed as slightly infested. Ten- 

 nessee. 



"Cydonia sp." was observed to be a host by Gardner (75). Flowering-quince 

 is now placed in the genus Chaenomeles. 



Cynara scolymus, artichoke. (C, N) 



Grower: Infested but profitable. California. 

 Minz 1936 (166): Reported infested in Palestine. 

 Pittman 1929 (192): Not usually attacked to such an extent as other 



market-garden plants. Western Australia. 

 United States Bureau of Plant Industry (unpublished data in files of 



Division of Nematology): Specimens from California, collected in 1939 



by C. E. Scott, rather heavily infested, with a large number of 



larvae. 

 Whittle and Drain 1935 (263): Listed as slightly infested. Tennessee (?). 



Cynodon dactylon (Capriola dactylon), Bermuda grass. (C, N) 



Anonymous 1939 (2): One of the rotations in the Texas rose industry uses 



Bermuda grass and weeds for 3 or more years; "root knot is no longer a 



serious problem." 

 Barrons 1939 (13): Numerous larvae entered root tips of seedlings heavily 



inoculated in greenhouse. Alabama. 

 Bessey 1911 (16): Nematodes not abundant and no injury observed. 

 Gardner 1926 (75): Bermuda grass "or Devils grass" observed to be a 



host. California. 

 Georgia Coastal Plain Experiment Station 1936 (83): Bermuda grass 



somewhat susceptible. 

 Godfrey 1935: 37 Infestation commonly observed to be light. Hawaii. 

 Mosseri 1904 (170): Usually considered resistant, but found infested in 



survey. Egypt. 



s " See footnote 10, p. 11. 



