HOST INDEX OF FUNGOUS DISEASES 491 



Hop Hornbeam (Ostrya virginiana (Mill.) Koch) 



Root Rot, Armillaria mellea Vahl ....... . . ...... 473 



Horse-chestnut (AZsculus Hippocastanum L.) 



Leaf Blotch, Phyllosticta Pavice Desm .............. 345 



Horse radish (Cochlearia Armoracia L.) 



Brown Spot, Altemaria Brassicce (Berk.) Sacc ........... 308 



Root Rot, Thielavia basicola (B. & Br.) Zopf .......... 210 



White " Rust," Cystopus candidus (Pers.) Lev ........... 149 



Huckleberry (Gaylussacia, Vacdnium, etc.) 



Gall, Exobasidium Vaccinii (Fckl.) Wor. . . .......... 440 



Hyacinth (Hyacinthus orientalis L.) 



Bacteriosis, Bacillus Hyacinthi-septicus Heinz .......... 134 



Yellow Disease, Pseudomonas Hyacinthi (Wakker) Erw. Smith ... 120 



Juniper (Juniperus communis L.) 



Rust, Gymnosporangitim clavaricrforme (Jacq.) Rees ........ 426 



Knotweed (Polygonum spp.) 



Rust, Puccinia Polygoni Pers ..... ............ 393 



Larch (Larix decidua Mill) 



Canker, Dasyscypha Willkommii Hartig ............. 202 



Decay, or Brown Rot, Polyporus sulphureus (Bull.) Fr ........ 457 



Dry Rot, Trametes Pini (Brot.) Fr ............. . . 467 



Root Rot, Polyporus Schweinitzii Fr ............... 463 



Lemon (Citrus Medico var. Limon L.) 



Brown Rot, Pythiacystis Citrophthora R. E. Smith ...... . . . 144 



Sooty Mold. See Orange. 



Lettuce (Lactuca sativa L.) 



Damping-off, or Rhizoctonia, Coriicium vagum B. & C., vo.v.Solani Burt 444 



Downy Mildew, Bremia Lactuca: Reg .............. 164 



(Sclerotinia Libertiana Fckl ..... . . . . . -."". . . . 198 



-p 



\Sclerotinia Fuckeliana De Bary 



Leaf Spot, Septoria consimilis E. & M 

 Rot. See Drop and Damping-off. 



Lilac (Syringa vulgaris L.) 



Powdery Mildew, Microsphcera Alni (Wallr.) Wint. . ....... 228 



Lily (Liliwn spp.) 



Botrytis, or Ward's Disease, Sclerotinia Fuckeliana De Bary . . . . 196 



Locust, Common (Robinia Pseudo-Acacia L.) 



Decay, or Brown Rot, Polyporus sulphureus (Bull.) Fr. . ..... 457 



Magnolia (Magnolia grandiflora] 



Leaf Spot, Phyllosticta Magnolia Sacc .............. 347 



Mallow (MalvacetR) 



Rust, Puccinia malvacearum Mont ........ , ...... 4 I 9 



