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



Var. Alba (name supplied), white torenia. 



Goff 1936 (96) : Infestation (4 plants) and very light (21 plants). Florida. 



Toxicophlaea, see Acokanthera. 



Trachymene caerulea (Didiscus caerulea), blue lacefiower. (C) 



Goff 1936 (96): Very heavily infested, plants very badly stunted. Florida. 



Watkins 1929 (248) : Didiscus rated as "resistant." Florida. 



Trachyspermum copticum (Ammi copticum). (C) 



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

 Tricholaena rosea, Natal grass. (C) 



Collins 1938 (41)'- "Natal redtop" not attacked (1 season). Rhodesia. 



Fulton and Winston 1919 (71): Nonsusceptible crop, for control rotation. 

 Florida. 



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



Vosbury and Winston 1921 (244) : After 2 years or more in Natal grass it 

 was found that the nematodes had practical! v disappeared. Florida. 



Watson and Goff 1937 (258) : Wild host. Florida. 



Trifolium alexandrinum, berseem, Egyptian clover. (M) 



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

 California Nematode Committee 1925:^ Resistant. 

 Kennedy and Mackie 1925 (123) : "Carries nematodes in limited numbers." 



California. 

 Malloch 1923 (154) - Field infestation found. California (Imperial Valley) 



Triticum aestivum (T. sativum), wheat. (C, N) 



Balachowsky and Mesnil 1935 (6) : Infestation observed on wheat in 



southern France following tobacco. [See Gramineae.] 

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



Purplestraw ("Alabama Bluestem") heavily inoculated in greenhouse. 



Alabama. 

 Bessey 1911 (16): No infestation found. 



Godfrey 1928 (92): Infestation abundant (one test). Hawaii. 

 Goffart 1934 (97): Not infested in greenhouse experiment (alfalfa inoculum; 



8- week test). [See also Gramineae.] 

 Reh 1906 (198) : Infested in Sweden. [This is a mistaken citation of papers 



by Nilsson-Ehle (179) on the sugar-beet nematode; see Avena.] 

 Tyler 1938 (237) : Viable eggs found in greenhouse experiment. [Infestation 



light.] District of Columbia. 



The w T heat nematode is Anguina tritici (Steinbuch) Filipjev, parasitic in the 

 flower parts and grain. 



Triticum repens, see Agropyron. 



Tropaeolum majus, common nasturtium. (N, S) 



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

 Godfrey 1935: 39 Infestation heavy. Hawaii. 

 Goff 1936 (96): Infestation light (1 plant) to very heavy; wilts when dry 



(70 plants, 2 tests). Florida. 

 Harris 1938 (104)' Nasturtium supports a moderate infestation without 



showing ill effect. Tanganyika (?). 

 Taubenhaus and Ezekiel 1933 (226): Infested occasionally, little loss. 



Texas. 

 Watkins 1929 (248): Nasturtium rated as "resistant." Florida. 



Tropaeolum minus, bush nasturtium. 



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

 Tulipa sp., tulip. (C) 



Steiner, G. (Division of Nematology, Bureau of Plant Industry. 1939): 

 Never found infested. 



No report of infestation on tulip is known. Whittle and Drain (263) listed it 

 as "slightly infested" on authority of Tyler (236), whose table heading permitted 

 this misunderstanding. 



37 See footnote 10, p. 11. - 

 3 s See footnote 6, p. 8. 

 a? See footnote 15, p. 16. 



