. POLYPOREAE. Polyporus. Sporophores large and usually shaped more or less like a hoof or small bracket. The sporogenous layer is com- posed of cylindrical tubes, which generally occupy the lower surface of the sporophore. The substance between the tubes is different from that of the rest of the sporophore. Polyporus (Fomes) igniarius (L.).-^ (Britain and America). Sporophores on living stems of oak, alder, apple, willow, and other Fli;. 263.—Polyporus i( on Oak. At tlie upper end a wood-pecker's nest-hole. (v. Tubeuf phot.) ^Thumen, " Ein ; Zeitsch.


. POLYPOREAE. Polyporus. Sporophores large and usually shaped more or less like a hoof or small bracket. The sporogenous layer is com- posed of cylindrical tubes, which generally occupy the lower surface of the sporophore. The substance between the tubes is different from that of the rest of the sporophore. Polyporus (Fomes) igniarius (L.).-^ (Britain and America). Sporophores on living stems of oak, alder, apple, willow, and other Fli;. 263.—Polyporus i( on Oak. At tlie upper end a wood-pecker's nest-hole. (v. Tubeuf phot.) ^Thumen, " Ein ; Zeitsch. f. Pflanzknkrankhdten, 1891. -Skiljakow, Scripta botan. horti univei'sitatis PttropoUtanae, 1890. ^R. Hartig, Zersetzungserscheinungen, PI. XV. and XVI. 2e


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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherl, booksubjectfungi