. Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae. Plant diseases; Parasitic plants; Fungi. USTILAGO. 287 ated best at 10" C, and not so well above 15" C. This conclusion is supported by experiments of Kellermann and Swindle. Neither these investigators nor Jensen, however, aqree. Fig. 157.—Ustilago perennans on Arrhenatherum elatius (Oat grass). The grains are transformed into black smut-masses; the appearance of the infected spikelets is qviite distinct from that of the healthy one to the right,
. Diseases of plants induced by cryptogamic parasites; introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae. Plant diseases; Parasitic plants; Fungi. USTILAGO. 287 ated best at 10" C, and not so well above 15" C. This conclusion is supported by experiments of Kellermann and Swindle. Neither these investigators nor Jensen, however, aqree. Fig. 157.—Ustilago perennans on Arrhenatherum elatius (Oat grass). The grains are transformed into black smut-masses; the appearance of the infected spikelets is qviite distinct from that of the healthy one to the right, (v. Tiibeuf phot.) with Brefeld's view, that the fungus is introduced into fields with fresh farmyard manure. Kellermann and Swingle have found a smut on in America wliicli they distinguish as Ust. avenae var. levis. Ust. Kolleri Wiile. This is another species of oat-smut recently dis- tinguished ; it has smooth spores, and is said to cause even greater damage than Ust. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Tubeuf, Karl, freiherr von, 1862-1941. London, New York [etc. ] : Longmans, Green & co.
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherl, booksubjectfungi
