. Fio. 35.—Flower of Radish ( saticas) hypertruphied by Cystojuis 's. The much-enlarged ovary stands out in the centre. The anthers are Ifaf-like ; the petals are much enlarged and hang downwards ; the sepals are somewhat enlarged. (Specimen from Botanical Museum of Erlangen, and photographed by Dr. Bnnis.) The couidial cushions form thick white stripes with a porcellaneous appearance, by which they are easily distinguislied from the cushions of Peronospora parasitica often present on the same plant.

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Keywords: ., bookcentury1800, bookdecade1890, booksubjectparasit, bookyear1897