. Fio. 161.—Ustilago tragopogoiiis. Plants of I'mgopogon in flower and fruit— 1, normal fruit; 2 and 3, normal flowers; 4, two normal flower-buds. The remaining specimens are attacked by the fungus, and, in consequence, i-emain in the bud condition, and filled with black spores which escape by the opening of the involucre, (v. Tubeuf phot.) yeast-like, till, on deficiency of nutrition, fusion and subsequent germination takes place. Ust. intermedia Schroet. (Ust. flosmlorum D. C.) (Britain). The anthers of Scahiosa Columbaria become filled with the dark violet spores of this smut. The spores ge
. Fio. 161.—Ustilago tragopogoiiis. Plants of I'mgopogon in flower and fruit— 1, normal fruit; 2 and 3, normal flowers; 4, two normal flower-buds. The remaining specimens are attacked by the fungus, and, in consequence, i-emain in the bud condition, and filled with black spores which escape by the opening of the involucre, (v. Tubeuf phot.) yeast-like, till, on deficiency of nutrition, fusion and subsequent germination takes place. Ust. intermedia Schroet. (Ust. flosmlorum D. C.) (Britain). The anthers of Scahiosa Columbaria become filled with the dark violet spores of this smut. The spores germinate in water, and, according to Brefeld, produce three-celled promycelia with few conidia ; some of these, as well as the cells of the promy-
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherl, booksubjectfungi
