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 Add this item to the list  Ganoderma applanatum (Pers.) Pat.
Page number:335 
Description type:Culture description 
Description:Ganoderma applanatum (Pers.) Pat.
Cultural characters: (PI. V, Fig. 1; Pl. VI, FigS. 1 t0 4).
Growth characters. Growth moderately rapid in some isolates, plates covered in three weeks, to very slow in others, plates covered in six or more weeks. Advancing zone even, appressed or with slightly raised downy mycelium to limit of growth. Mat white at first and remaining so or becoming "tilleul buff" (9.0YR8.7/1.5) to "avellaneous" (8.0YR 6.2/3.5), "cream buff" (3.0Y8.3/4.5) to "Isabella color" (1.0Y5.5/4.3), or "olive-buff" (4.0Y7.5/3.0) to "dark olive-buff" (4.0Y6.5/4.5) after two to four weeks, the newest growth appressed, translucent, cottony or farinaceous, later opaque, compact, felty or pellicular in scattered areas or over whole surface, the color occurring in these compact areas, frequently wrinkled. Reverse unchanged or "olive-ocher" (3.0Y6.8/6.5) to ' honey yellow" (2.0Y6.7/6.2) under colored areas. Odor none. On gallic and tannic acid agars diffusion zones weak to strong, no growth to 1.0 cm. diameter on gallic acid agar, trace to 1.5 cm. diameter on tannic acid agar.
Hyphal characters. Advancing zone: hyphae hyaline, nodose-septate, branched, the branches usually occurring at the septa, 1.5-4.5 µm diameter. Aerial mycelium: (a) hyphae as in advancing zone; (b) fiber hyphae very numerous, with walls thick and refractive, lumina narrow or apparently lacking, aseptate, frequently branched, 1.0-2.0(-4.5) µm diameter, closely interwoven; (c) cuticular cells (formed at surface of agar) appearing first as swellings on nodose-septate hyphae, with contents staining in phloxine, later empty, with walls slightly thickened, compactly arranged to form pseudoparenchymatous layer; (d) staghorn hyphae present in some isolates. Submerged mycelium: hyphae as in advancing zone.
Type of rot: white mottled rot of broad-leaved or, rarely, coniferous trees.
Descriptions of cultural characters: Badcock (3), Campbell (42), Cartwright and Findlay (51, 52, 53, 55, 56), Davidson, Campbell, and Blaisdell (64), Davidson, Campbell, and Vaughn (67), Fritz (74), Hopp (88), Humphrey and Siggers (92), White (151).
Coleman (59), having made a careful study of the spore wall in several species of Ganoderma, wrote "It would seem to be a character of much greater importance from a systematic standpoint than many of those at present being used in the classification of the Polyporaceae", and "I consider that all forms showing the spore characteristics described should be brought together under the genus Ganoderma Karst". Those taxonomists who concur in this opinion follow Patouillard in including Ganoderma applanatum in this genus, while others who consider the structure of the upper surface of the fruit body as a more important diagnostic character in delimiting the genus, put the species under Fomes applanatus. In the present study, its cultural characters were found to be so similar to those, of the species of Ganoderma examined as to indicate relationship, and to warrant its inclusion in that genus. In fact, its separation from other species of Ganoderma with which it coincides in the key is exceedingly difficult, and information such as that G. oregonense is limited to western conifers and that G. lobatum is rare and will probably not be encountered in Canada, must be considered in addition to Cultural characters in making identifications.
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