. Comparative morphology and biology of the fungi, mycetozoa and bacteria. Fungi -- Morphology; Bacteria -- Morphology. 228 DIVISION II.—COURSE OF DEVELOPMENT OF FUNGI. the hymenium the well-known saccharine fluid is secreted, w. <-°o o OWY hich 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 sclerot
. Comparative morphology and biology of the fungi, mycetozoa and bacteria. Fungi -- Morphology; Bacteria -- Morphology. 228 DIVISION II.—COURSE OF DEVELOPMENT OF FUNGI. the hymenium the well-known saccharine fluid is secreted, w. <-°o o OWY hich 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. Ill b)- Kiihn informs us that new gonidiophores and scle- FlC. no. Claincepspurpurea, Tul. Portion of a thin longitudinal section on the boundary line between the gonidiophore ss—re and the young sclerotium ?n. See Fig. 17. After Tulasne, from Lurssen's Handbuch, highly magnified. C^ rotia are developed in the manner described above from the germ-tubes of gonidia, which have found their way to the flowers of a grass. Neetria 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 per
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