. Fig. 34.—Phytophthora root rot of tulip. TOYON See "Photinia, Heteromeles, or Toyon" (p. 52) TULIP Breaking.—The disease is characterized by a mottling or irregular breaking of the color of the petals. Affected plants are somewhat stunted, and the leaves may also show mottling. The disease is caused by a virus

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Keywords: ., bo, bookcentury1900, booksubjectflowers, booksubjectplantdiseases