. Timber storage conditions in the eastern and southern states with reference to decay problems. .) Fr., is shownin Plate IV, figures 4,5, and 6, growing bothfrom the ends of storedhardwood lumber andfrom built-up plankfoundations (PL 3). This organismis profusely distributedthroughout t h e entireUnited States and ismore destructive tohardwood timber thanany other fungus. Other members of thisgenus, such as Poly-stictus hirsutus (Schrad.)Fr. (PL IV, figs. 7 and8), P. pargamenus Fr.(PL V, figs. 1 and 2),and P. abietinus Fr. (PL V, figs. 3 and 4) are likely to be found inmost lumberyar
. Timber storage conditions in the eastern and southern states with reference to decay problems. .) Fr., is shownin Plate IV, figures 4,5, and 6, growing bothfrom the ends of storedhardwood lumber andfrom built-up plankfoundations (PL 3). This organismis profusely distributedthroughout t h e entireUnited States and ismore destructive tohardwood timber thanany other fungus. Other members of thisgenus, such as Poly-stictus hirsutus (Schrad.)Fr. (PL IV, figs. 7 and8), P. pargamenus Fr.(PL V, figs. 1 and 2),and P. abietinus Fr. (PL V, figs. 3 and 4) are likely to be found inmost lumberyards throughout the United States, occasionally fruit-ing on stored lumber, but more often causing sap rots of tramwaytimbers, foundations, and ties. The last species grows on coniferoustimber almost exclusively; the other two on hardwood timber. Among other members of the true pore fungi may be mentionedPolyporus adustus (Willd.) Fr. (PL V, figs. 5 and 6), which is usu-ally thin, tough, and leathery, creamy above and smoky below;P. sanguineus (L.) Fr. (PL VI, fig. 4), of a bright red through-. P94F Fig. 32.—A retail shed in Alabama in which the lum-ber projects beyond the eaves, thus catching the dripfrom rains. This condition favors decay when thewater runs back along the boards into the piles. 32 BULLETIN 510, U. S. DEPARTMENT OF AGRICULTURE. out, shiny above, rather thin and shelflike, which is found abun-dantly throughout the South on hardwood timbers; and P. gilvusSchw. (PL VI, figs. 2 and 3), a firm, comparatively thin, ratherrigid species, yellowish within and reddish brown without as it the northeastern United States one occasionally finds on oakor chestnut timbers the heavy, tough, corky fruit bodies of Daedaleaquercina (L.) Pers. (PI. VI, fig. 1). Y\hen the plant develops nor-mally it forms large and sinuous pores, but in lumberyards it moreoften appears as abortive clay-colored cushions (PI. III. fig. -1). Itis one of the few fungi which attack white oak and
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectwood, bookyear1917
