. Comparative morphology and biology of the fungi, mycetozoa and bacteria . Plant morphology; Fungi; Myxomycetes; Bacteriology. izS DIVISION II.—COURSE OF DEVELOPMENT OF FUNGI. the hymenium the well-known saccharine fluid is secreted, which oozes out from between the paleae in thick drops rendered turbid by count- less gonidia, and thus betrays the presence of the parasite. This juice is eagerly sought by in- sects, which thus carry away the gonidia. Soon the formation of the scle- rotium begins in the basal portion of the gonidia- forming body in the way already described. The sclerotium reac
. Comparative morphology and biology of the fungi, mycetozoa and bacteria . Plant morphology; Fungi; Myxomycetes; Bacteriology. izS DIVISION II.—COURSE OF DEVELOPMENT OF FUNGI. the hymenium the well-known saccharine fluid is secreted, which oozes out from between the paleae in thick drops rendered turbid by count- less gonidia, and thus betrays the presence of the parasite. This juice is eagerly sought by in- sects, which thus carry away the gonidia. Soon the formation of the scle- rotium begins in the basal portion of the gonidia- forming body in the way already described. The sclerotium reaches matu- rity by the time that the grass is ripe and passes into the dormant state which lasts till the next spring. The gonidia readily put out germ- tubes as soon as they become free, and the tubes sometimes produce small upright branches on the microscope - slide, from which fresh gonidia are then abscised (Fig. in 6)- Kiihn informs us that new gonidiophores and scle- rotia are developed in the manner described above from the germ-tubes of gonidia, which have found their way to the flowers of a gi-ass. Neotria ditissima may be given from R. Hartig's description^ as an example of a species furnished with more than one kind of gonidium. The mycelium lives in the rind of leafy trees, and causes the disease known as ' canker.' It forms a small cushion-like pseudo-parenchymatous thallus beneath the surface of the rind; the thallus eventually bursts through the rind and produces first gonidia and then perithecia on its outer surface. A sufficient account has already been given of the perithecia, which in the primordial state are concealed beneath the gonidia and the structures producing them, but these are displaced and thrust aside by the perithecia. The gonidia are now formed acrogenously outside the cushion on short slender filiform sterigmata arranged side by side and parallel to one another, so as to. Fig. no. Cliwicepspurpureat Tul. Portion of a thin longitudinal section
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