. Comparative morphology of Fungi. Fungi. 444 COMPARATIVE MORPHOLOGY OF FUNGI rhizomorphs become several millimeters thick, terete, white, tough and flexible when young, gray to black and brittle in age. They consist of a ground tissue of thin-walled vegetative hyphae in which are imbedded a number of functionally specialized hyphae (fibrous, vascular, etc., Fig. 268). These enable the fungus to penetrate unfavorable regions, such as cracks in the walls, and thus reach fresh uninfected wood to continue. Fig. 286.—Merulius lacrymans. Fructifications on rotting beam. (Natural size; after Falck,
. Comparative morphology of Fungi. Fungi. 444 COMPARATIVE MORPHOLOGY OF FUNGI rhizomorphs become several millimeters thick, terete, white, tough and flexible when young, gray to black and brittle in age. They consist of a ground tissue of thin-walled vegetative hyphae in which are imbedded a number of functionally specialized hyphae (fibrous, vascular, etc., Fig. 268). These enable the fungus to penetrate unfavorable regions, such as cracks in the walls, and thus reach fresh uninfected wood to continue. Fig. 286.—Merulius lacrymans. Fructifications on rotting beam. (Natural size; after Falck, 1912.) their growth. Upon lack of nourishment, the protoplasm contracts into short sections, surrounds itself with a thick wall and produces gemmae. The next stage is reached by the reflexed forms, such as M. tremellosus which has a broad gelatinous subhymenial layer. The highest stage is reached in the dimidiate forms, which in M. rubellus form groups of. 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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