. Comparative morphology of Fungi. Fungi. LABOULBENIALES 367 of its lateral walls. These rupture the outer wall at the base of the primary appendage. The cavity continues to grow until the perithecia form from the base of the circle of secondary appendages. The anther- idial appendages (Fig. 247, 7) usually consist of three superposed short cells bearing at the tips one to three large, bacilliform spermatia, which soon fall off and are sought by the trichogynes. Although the perithecia arise endogenously, their development is normal (Fig. 247, 8).. Fig. 246.—Zodiomyces vorticellarius. Mature i
. Comparative morphology of Fungi. Fungi. LABOULBENIALES 367 of its lateral walls. These rupture the outer wall at the base of the primary appendage. The cavity continues to grow until the perithecia form from the base of the circle of secondary appendages. The anther- idial appendages (Fig. 247, 7) usually consist of three superposed short cells bearing at the tips one to three large, bacilliform spermatia, which soon fall off and are sought by the trichogynes. Although the perithecia arise endogenously, their development is normal (Fig. 247, 8).. Fig. 246.—Zodiomyces vorticellarius. Mature individual. (X 195; after Thaxter, 1896.) Laboulbeniaceae.—The central family which has given the order its name is the largest in the order with about thirty genera, parasitic on most of the groups of insects. The ontogeny has been more fully studied and will be given in detail. The ascospores are formed in asci, occasionally eight, usually four by the degeneration of four nuclei (Fig. 252, 7 and 8). Very early they are unicellular, later except in Amorphomyces dividing into a long basal and short apical cell (Fig. 252, 9). They are oriented in the ascus accord- ing to their later bipolar development, with the basal cell uppermost and are surrounded by a gelatinous, sticky sheath, which is usually. 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 Gäumann, Ernst Albert, 1893-1963; Dodge, Carroll William, 1895-. New York [etc. ] McGraw-Hill Book Company, Inc.
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