FAAULY MARMORACEAE 1185 



Induced disease -.In Ornithogalumthyr- Transmission: By inoculation of ex- 

 soides, young leaves finely mottled with pressed juice in the presence of fine 

 light and dark green, and becoming more carborundum powder, with difficulty, 

 conspicuously mottled with gray or yel- By aphids. Aphis gossypii Glov., Macro- 

 low as the leaves mature; flower stalks siphumliluMone\\,M.solanifolnAshm.., 

 sometimes boldlj' marked with light and and Myzus persicae (Sulz.); less effici- 

 dark green blotches. In perianth seg- ently by Myzus circumflexus (Buckt.) 

 ments, thin longitudinal streaks. (APHIDIDAE). 



Key to the species of the Miscellaneous Mosaic-Virus Group. 



Many of the following viruses, although described in some detail in the literature, 

 stand in need of reinvestigation to determine additional properties and possible rela- 

 tionships to preceding groups. 



I. Affecting species of MALVACEAE. 



28. Marmor abutilon. 

 II. Affecting species of CELASTRACEAE. 



29. Marmor euonymi. 



III. Affecting species of OLE ACE AE. 



30. Marmor ligustri. 



IV. Affecting species of LEGUMINOSAE (and no. 39, other families also). 



31. Marmor laburni. 



32. Marmor arachidis. 



33. Marmor trifolii. 



34. Marmor pachyrhizi. 



35. Marmor vignae. 



36. Marmor repens. 



37. Marmor Jastidiens. 



38. Marmor iners. 



39. Marmor efficiens. 

 V. Affecting species of GRAMINEAE. 



40. Marmor tritici. 



41. JM armor graminis. 

 VI. Affecting species of MUSACEAE. 



42. Marmor abaca. 

 VII. Affecting species of PASSIFLORACEAE. 



43. Marmor passiflorae. 

 VIII. Affecting species of ROSACE AE. 



44. Marmor flaccumfaciens. 



45. Marmor rosae. 



46. Marmor veneniferum. 



47. Marmor mali. 



48. Marmor jragariae. 



49. Marmor marginans . 



50. Mar7nor rubi. 



51. Marmor persicae. 



52. Marmor astri. 



53. Marmor rubiginosum. 



54. Marmor cerasi. 



55. Marmor lineopictum. 



56. Marmor pallidolimbatus . 



57. Marmor nerviclarens. 



