Diseases of plants induced by Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae diseasesofplants00tube Year: 1897 FiG. lol.— Ustilago vunjdis. Maize-head completely malformed into smut-boils, which have not yet ruptured, (v. Tubeuf phot.) Fig. —Ustilago maydis. Smut-boils on stem and leaf of a Maize-plant, (v. Tubeuf phot.) seedlings as well as growing points and other young parts of older plants. Infectifn may take place on any immature part of the host. The mycelium does not grow through the whole plant,
Diseases of plants induced by Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae diseasesofplants00tube Year: 1897 FiG. lol.— Ustilago vunjdis. Maize-head completely malformed into smut-boils, which have not yet ruptured, (v. Tubeuf phot.) Fig. —Ustilago maydis. Smut-boils on stem and leaf of a Maize-plant, (v. Tubeuf phot.) seedlings as well as growing points and other young parts of older plants. Infectifn may take place on any immature part of the host. The mycelium does not grow through the whole plant, but only inhabits a part in the vicinity of the place infected. The heads are most frequently attacked, with the result that the grain fails to reach maturity, or is destroyed during the formation of fungus-spores. Owing to the danger of infection, grain mixed with smut- spores should never be used for sowing; nor can such be safely used for feeding cattle on account of its injurious effects on them.
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