. Comparative morphology of Fungi. Fungi. 448 COMPARATIVE MORPHOLOGY OF FUNGI The second group of the Polyporaceae with labyrinthiform pores, shares the fate of the first group in its systematic disorder. Here only three genera will be discussed, Daedalea, Lenzites and Favolus. In the two former, the fructifications are woody, leathery or corky, in the latter. Fig. 289.—Lenzites abietina. Resupinate fructification. At a, lie numerous denticu- late hymenial fundaments, at b, somewhat older radiating fructifications, at c, irregularly assembled fructifications with common growth zones. (X ^5; af
. Comparative morphology of Fungi. Fungi. 448 COMPARATIVE MORPHOLOGY OF FUNGI The second group of the Polyporaceae with labyrinthiform pores, shares the fate of the first group in its systematic disorder. Here only three genera will be discussed, Daedalea, Lenzites and Favolus. In the two former, the fructifications are woody, leathery or corky, in the latter. Fig. 289.—Lenzites abietina. Resupinate fructification. At a, lie numerous denticu- late hymenial fundaments, at b, somewhat older radiating fructifications, at c, irregularly assembled fructifications with common growth zones. (X ^5; after Falck, 1909.) more or less fleshy; in all three they are perennial, rarely resupinate, usu- ally brackets. In Daedalea the folds are labyrinthiform, seldom almost lamelliform; in Lenzites (Figs. 289 and 290) they are chiefly formed as definitely radiating lamellae (even though still tortuous), which from time to time anastomose leaving between them lengthwise slits where alone the hymenium develops. At the edge of the fructification, the partitions are often closer so that the hymenophore becomes more poroid. Occasionally the lamellae develop to serrate elevations and then appear quite similar to Phlebia. In the predominantly tropical Favolus, the la- mellae are similar to those of Lenzites except that they anastomose regularly forming a faveolate network which is even more regular in Hexagonia. In Cyclomyces, the lamellae are arranged in concentric circles. Favolus europaeus is a parasite of nut trees, Daedalea quer- cina a parasite of oaks and chestnuts. Lenzites saepiaria cause a very serious decay of coniferous timbers in buildings, where it assumes the importance of Merulius. 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
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