. Comparative morphology of Fungi. Fungi. *0m K â Sir w -J /â¢' Tr ve Fig. 239.â 1. Pachyphloeus melanoxanthus. Section of mature fructification. 2. Pachyphloeus luteus. Section of fructification. 3. Tuber excavatum. Section of young fructification, cavity beginning to fill with loose hyphal tissue. 4. Piersonia bispora. Peripheral portion of immature fructification, tr, tramal plates; ve, venae externae. (3 X 26; 4X6; after E. Fischer, 1897, 1908; Bucholtz, 1897.) white or reddish venae externae, ochraceous at maturity, and the dark- brown venae internae, often almost obliterated at maturity.
. Comparative morphology of Fungi. Fungi. *0m K â Sir w -J /â¢' Tr ve Fig. 239.â 1. Pachyphloeus melanoxanthus. Section of mature fructification. 2. Pachyphloeus luteus. Section of fructification. 3. Tuber excavatum. Section of young fructification, cavity beginning to fill with loose hyphal tissue. 4. Piersonia bispora. Peripheral portion of immature fructification, tr, tramal plates; ve, venae externae. (3 X 26; 4X6; after E. Fischer, 1897, 1908; Bucholtz, 1897.) white or reddish venae externae, ochraceous at maturity, and the dark- brown venae internae, often almost obliterated at maturity. In the sub- genus Aschion the venae externae converge toward a point, while in the subgenus EuTuber they radiate toward certain points of the periphery and open outward; in some species this opening is not visible as the venae externae are enclosed at the periphery by a compact hyphal tissue. The regular structure of the hymenium which was gradually disap- pearing in Hydnotrya and Pachyphloeus, is entirely lost in Tuber (Fig. 240, 2). The asci (ellipsoid or pyriform) lie irregularly imbedded in a tissue between the venae. The spore number has become inconstant. 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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Keywords: ., bookcentury1900, bookdecade1920, bookpublishern, booksubjectfungi
