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A genus of minute fungi which form a floccose mass of filaments on decaying fruit, etc. Many forms once referred to this genus are now believed to be temporary conditions of fungi of other genera, among them the vine mildew (Oïdium Tuckeri), which has caused much injury to grapes.

m) with small blue globular flowers in a dense raceme. -- Grape fungus (Bot.), a fungus (Oidium Tuckeri) on grapevines; vine mildew. -- Grape hopper (Zoöl.), a Small yellow and red hemipterous insect, often very injurious to the leaves of the grapevine. -- Grape moth (Zoöl.), a small moth (Eudemis botrana), which in…

lly a hardening and destruction of the vitality of the surface. The plant has been called Oidium Tuckeri, but is now thought to be the conidia- producing stage of an Erysiphe. -- Vine of Sodom (Bot.), a plant named in the Bible (Deut. xxxii. 32), now thought to be identical with the apple of Sodom. See Apple of Sodom,…