1186 



MANUAL OF DETERMINATIVE BACTERIOLOGY 



IX. AEecting species oiV IT AC EAE. 



58. Marmor viticola. 

 X. Affecting species of SANTALACEAE. 



59. Marmor santali. 



XI. Affecting species of CONVOLVULACEAE and, experimentally, of other 

 families. 



60. Marmor secretum. 

 XII. Affecting species of GERANIACEAE. 



61. Marmor pelargonii. 



XIII. Affecting species of SOLA N ACE AE and in most cases also of other families. 



62. Marmor angliae. 



63. Marmor aevi. 



64. Marmor raphani. 



XIV. Affecting species of PRIMULACEAE. 



65. Marmor primulae. 

 XV. Affecting species of MORACEAE. 



66. Marmor caricae. 

 XVI. Affecting species of RUT ACE AE. 



67. Marmor italicum. 



28. Marmor abutilon H. {loc. cit., 50). 

 From New Latin Abutilon, generic name 

 of a host . 



Common name : Abutilon-mosaic virus. 



Hosts: M ALV ACE AE— Abutilon stri- 

 atum Dicks, var. thompsonii Veitch. 

 Experimentally, also Abutilon arboreum 

 Sweet; A. avicennae Gaertn.; A. esculen- 

 tum St. Hil.; A. indicum Sweet; A. in- 

 signe Planch. ; A . megapotamicuTn St. Hil. 

 and Naud. ; A. regnellii Miq. ; A. sellowi- 

 anum Regel; A. venosum Lem.; A. viti- 

 folium Presl.; Althaea ficifolia Cav.; A. 

 officinalis h.; A. rosea Cav.; Anoda has- 

 tata Cav.; Kitaibelia vitifolia Willd.; 

 Malva borealis; M . crispa; M. mauritiana 

 Mill. ; M. sylvestris L. ; M. verticillata L. ; 

 Malvastrum capense Garcke; Modiola de- 

 cumbens G. Don.; Sida mollis Herb.; S. 

 napaea Cav.; Sidalcea Candida A. Gray. 



Insusceptible species: MALVACEAE 

 — Althaea taurinensis; Sidalcea purpurea; 

 Sphaeralcea umbellata G. Don. 



Geographical distribution : Germany, 

 France, England, United States; orig- 

 inally obtained from a single variegated 

 seedling found among green plants of 

 Abutilon striatum imported from the 

 West Indies in 1868 by Veitch and Sons ; 

 subsequently the infected plant was 



propagated vegetatively as an ornamental 

 variety. 



Induced disease : In Abutilon, systemic 

 chlorotic mottling. Recovery occurs if 

 there is persistent removal of affected 

 leaves, suggesting that the virus does not 

 increase in stems. After recovery, plants 

 are susceptible to reinfection. 



Transmission : By grafting, except 

 patch-bark-grafting, which is ineffective. 

 Occasionally through seeds from diseased 

 plants. Not by inoculation of expressed 

 juice. No insect vector is known. 



Varieties : Distinctive strains have 

 been noted, but not separately named; 

 one isolate originally occurring in Abuti- 

 lon darwini var. tesselatum, seems to be- 

 long here ; it differs from the type princi- 

 pally in severity of induced disease and 

 in ability to infect Lavatera arborea. 



Literature : Baur, Ber. d. Deutsch. Bot. 

 Gesellsch., 22, 1904, 453-460; 24, 1906, 

 416-428; 25, 1907, 410-413; K. Preuss. 

 Akad. AViss., Sitzungsber., 1906, 11-19; 

 Davis, Ann. Missouri Bot. Gard., 16, 

 1929, 145-226; Hertzsch, Ztschr. f. Bot., 

 20, 1927, 65-85; Keur, Phytopath., 23, 

 1933, 20 (Abst.) ; 2^, 1934, 12-13 (Abst.) ; 

 Bull. Torrey Bot. Club, 61, 1934, 53-70; 

 Lindemuth, Gartenflora, 51, 1902, 323- 

 326. 



