. Fig. II. — Dodder (Cuscuta (!ro»ovii), parasitic on a species of As/er in Kcw Gardens. .\'at. size. and withers within forty-eight hours, and during clamp weather is completely destroyed in that time. A series of experiments conducted at Kew with two species of dodder proved that neither calcium sulphide nor calcium sulphate (gypsum) had any effect whatever on the dodder, although completely covered with the substance and kept damp for a week. Dodder is introduced to land in the form of seed,

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Keywords: ., bookpublishernewyorkmacmillan, booksubjectplantdis, bookyear1910