Fungous diseases of plants . appearon the upper surface of the leaves, but are not usually present, atleast abundant, over the whole affected area. i p ? ^^v ?? r if ^-^^^__^ p^^iii ^^^^^^^ • ^V^ ^^^^ 1 lihf. ^4i ^^^l^y M *^^^H ^^. _; # ^^ ^^^H 1^ ^^^^^^^^H ^llgglg^^ Fig. 167. : AvvL^ Blotch Phyllosticta hortorum Speg.^ occurs both upon leaves and fruitof the eggplant {Solamim Melongend), producing upon the lattersoft spots which become shrunken and decayed, rendering the fruitworthless. Phyllosticta solitaria K. & E. A fungus producing a destruc-tive fruit blotch^ of
Fungous diseases of plants . appearon the upper surface of the leaves, but are not usually present, atleast abundant, over the whole affected area. i p ? ^^v ?? r if ^-^^^__^ p^^iii ^^^^^^^ • ^V^ ^^^^ 1 lihf. ^4i ^^^l^y M *^^^H ^^. _; # ^^ ^^^H 1^ ^^^^^^^^H ^llgglg^^ Fig. 167. : AvvL^ Blotch Phyllosticta hortorum Speg.^ occurs both upon leaves and fruitof the eggplant {Solamim Melongend), producing upon the lattersoft spots which become shrunken and decayed, rendering the fruitworthless. Phyllosticta solitaria K. & E. A fungus producing a destruc-tive fruit blotch^ of the apple in the South has recently beenidentified as the above species. The disease is more commonupon the light colored varieties of this fruit. 1 Ilalstcd, V>. I). Some Fungous Diseases of the Egg Plant. The Leaf-SpotFungus. N. J. Agl. Exp. Sta. Kept. 12 : 279-281. 1890. ^ Scott, W. M., and Rorer, J. B. Apple Blotch. Bureau Plant Ind., U. S. liullt. 144: 1-28. pis. 1-6. 1909. FUNGI IMPERFECTI 347. Phyllosticta maculicola Hals.^ is the cause of a very commonleaf spot of several species of Dracaena and Cordyline. The spotsare characterized by pale centers and reddish or purplish disease is sometimes severe in greenhouses where it has longbeen allowed to proceed unchecked. It is, however, readily pre-vented by spraying with potassium sulfidesolution. Phyllosticta Ampelopsidis Ell. & Mart, isperhaps closely related to the fungus causingblack rot of the grape. It has been injuriousduring some seasons to the Boston orJapanese ivy {Ampclopsis V^citchii). Phyllosticta Catalpae Ell. & Mart.^ iscommonly found associated with Maav-sporiinn Catalpcs on the leaves of severalspecies of catalpa, but it is to the formerfungus that the production of the spot isnow ascribed. Phyllosticta Violae Desm. occurs uponthe violet and the pansy, often causingblotch-like, pale spots which may result inconsiderable injury. Phyllosticta Magnoliae Sacc. produces avery definite s
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