145 



zygosaccha romyces 



Viola sylvestris, I. 372. 



— tricolor arvensis, I. 60. 



violaceus [Bacillus), II. 333; IV. 197; 



V. 33, 218, 243-246. 

 virescens {Bacillus), II. 333. 

 viridis {Bacillus), IV. 39, 197. 

 viridis [Chermes), I. 2, 3, 14. 

 viscosus {Aerobacter), {Bacillus viscosus), 



IV. 31, 32; V. 82. 103, 109, 218, "^19, 

 256, 269. 



viscosus {Bacillus), V. 103, 109,218,219, 



see alsp: Aerobacter viscosus. 

 Viscum album, I. 16, 375. 

 vitellinae {Aphis), I. 36. 

 Vitis Berlandièri, III. 162. 



— Labrusca, II. 139. 



— Riparia, III. 162. 



— vinifera, I. 2, 35, 36, 42, 56. 

 Vitis {Phytoptus). I. 33. 

 Vollenhovii {Nematus), I. 66. 

 Volvella coronillae Am., I. 40. 

 Volvox globator, I. 17; II. 228, 294. 

 Volvulifex Pruni Am., I. 26, 42. 



— rodizans Am., I. 42. 



vulgate {Bacterium), III. 248, see also: 

 Proteus viilgaris. 



vulgare {Ceratoneon), I. 42. 



vulgaris {Bacillus), III. 32, 33. 



vulgaris {Proteus), {Bacillus proteus, Bac- 

 terium vulgare), II. 339; III. 32,248; 



V. 3. 218. 



vulgaris {Synergus), I. 138; III. 204. 

 vulpinus {Bacillus), IV. 352, 354. 



W 



Warmingii {Chromatium), III. 39. 

 Weberiana {Grapholitha), V. 172. 

 Weigelia rosea, I. 325. 



Widdringtonia, II. 285. 

 Woeberiana {Carpocapsa), I. 58. 

 Woodwardia radicans, 1. 102. 



X 



Xanthorea parielina {Parmelia parietina, 

 Physcia parietina), I. 11; II. 315-319, 

 320*; III. 21-24; IV. 118; V. 41, 288. 



Xenophanes Potentillae, I. 24. 71. 



Xovides nitens, I. 267. 



xylinum {Acetobacter), V. 236, 237, see 

 also: Bacterium xylinum. 



xylinum {Bacterium), {Acetobacter xyli- 

 num), III. 273-278; V. 90, 236. 237. 



Xy lorna ferruginea Schulz., I. 41. 



Xylostei {Aphis), I. 32, 38. 



Xylostei [Selundria). l. 66. 



Yucca, I. 90*, 93, 94. 



— filamentosa, ï. 93. 



— gloriosa, I. 93. 



Zea mays, I. 310, 31 1 ; II. 290. 

 Zingiberaceae, III. 152. 

 Zoochlorella. II. 276, 293, 304-312. 



— conductrix Brandt, II. 276, 311, 320*. 



— parasitica Brandt, II. 276, 311. 

 Zopfii {Bacterium), III. 33, 42*, 244, 245; 



IV. 31. 92; V. 275. 

 Zostera, V, 201. 



— nana, I. 13. 

 zygosaccharomyces {Saccharomyces), IV. 



330, 331; V. 62. 



M. W. Beijerinck. Verzamelde Geschriften; Zesde Deel. 



10 



