ADDITIONS TO THE LIST OF PLANT DISEASES. 331 



POMEGRANITE MELON, {Cucumi.'i Mdo var. Dudaim Naiid.) 

 Angular leaf spot. 



Bacterium lacrymans Sm. & Bry. Marshall, August, 1916. This disease 

 has been reported previously on cucumber.^ 

 Anthracnose. 



Colletotrichum Lagenarium (Pass.) E. & H. Marshall, August, 1916. 

 This disease was severe on fruit, stems and leaves last season. (See also 

 under citron and gourd) . 

 POTATO, {Solarium tuberosum L.) 

 Russett scab. 



Corticium vagum B. & C. Tippeeanoe, April, 1916; Marshall, Sept., 

 1916; Jefferson, April, 1916 (J. B. Demaree). (See also under carnation 

 and celery). 

 RASPBERRY, [Rubus sp.) 

 Anthracnose. 



Gloeosporium naviculisporum Ston. Boone, August, 1916 (P. S. Lowe). 

 This disease may be readily distmguished from the ordinary anthracnose 

 caused by Gloeosporium venetum Speg. by the fact that the acervuli are 

 scattered indefinitely over the stem or leaf, rather than being confined 

 to definite spots. 

 RED TOP, {Agroslis alba var. vulgaris [With.] Thurb.) 

 Leaf spot. 



Scolecotrichuni graminis Fckl. Marshall, June, 1916. (See also under 

 orchard grass) . 

 ROSE, {Rosa spp.) 

 Spotting. 



Pilobolus Oedipus Mont. Tippecanoe, May, 1916. This fungus has 

 been found causing more or less damage to roses in greenhouses around 

 Lafayette, Ind. While not parasitic upon roses, the spore heads of the 

 fungus are shot up on to the leaves and flowers, in some cases covering 

 them thickly with black specks and decreasing the value of the flowers. 

 I^eaf spot. 



Phylloslicta Rosae Desm. Boone, August, 1916 (P. S. Lowe), on cul- 

 tivated roses. 



Cercospora rosicola Pass. Tippecanoe, Sept., 1916 (J. C. Summers), 

 on Rosa nitida Willd. While the fungus was collected only on the wild 

 rose, it is known to cause a disease of cultivated roses as well. 

 SALSIFY, {Tragopogon porrifolius L.) 

 White rust. 



Albugo Tragopogonis (D. C.) S. Gray, Clay, June, 1916 (W. B. Gil- 

 lespie). This disease has been reported i:)reviously on Ambrosia arlemis- 

 sifolia.^ 



8. Pinal, F. .1. Ind. Acad. Sci. Proc. 1915. 



9. Wilson. G. W. Ind. Acad. Sci. Proc. 1907:82. 



