Name: Ganoderma pfeifferi
Citation: in Patouillard, Bull. Soc. mycol. Fr. 5(2,3): 70 (1889)
Collected by : Pfeiffer
Country (state) :
Location details : Frankfurt-am-Main
Substrate details : trunk of Abietinos
Status : Type
Ryvarden, L.; Gilbertson, R.L. 1993. European polypores. Part 1. Synopsis Fungorum. 6:1-387
Page number : 277
Remarks (public) : The species is highly characteristic because of the cracked and wrinkled resinous layer on the pileus, the sweet scent in winter and the dark brown context which immediately distinguishes it from old specimens of G. lucidum and G. resinaceum.
Description type : Non-original description
Description : Ganoderma pfeifferi Bres. – Bull. Soc. Mycol. Fr. 5:70, 1889.
Basidiocarps perennial, sessile and broadly attached, semicircular and often of large dimension, 30 × 12 × 8 cm, coriaceous to woody; upper surface flat to convex, sulcate in wide zones. with a distinct crust, at first light red and semiglossy, soon reddish brown to bay. dull because of an excreted resinous layer which first is smooth. but soon becomes cracked and wrinkled and yellow when crushed, melts readily in a flame from a match and becomes smooth and glossy, margin rounded and yellowish in actively growing specimens; pore surface whitish to cream. late in autumn and winter more yellowish because of an excreted waxy layer with a sweet bee’s wax-like scent. in old and dead specimens the pore surface becomes ochraceous to buff or pale brown. pores circular. 5-6 per mm; context dark brown to umber, homogeneous. concentrically zonate. up to 4 cm thick at the base; tube layers dark brown, old tubes often filled with white mycelium. stratified. but without separating tramal tissue, each tube layer or zone up to 2 cm thick, total tube layer up to 10 cm thick in old specimens.
Hyphal system trimitic; generative hyphae hyaline. thin-walled, with clamps, 2-4 µm in diam. often difficult to observe; skeletal hyphae abundant, thick-walled, pale brown, P nonseptate. 4-6 µm in diam, straight, unbranched or with a few lateral blunt side branches or swellings, these often separated from the main hypha by a simple septum; binding hyphae of the Bovista-type with long whip like branches, pale brown. nonseptate, 3-4 pun in diam in the main stem, most easily seen in the context.
Cystidia or other sterile hymenial elements absent.
Basidia broadly clavate, 4 sterigmate. 12-18 × 6-10 µm. with a basal clamp. Basidiospores ellipsoid. truncate at the apex, pale brown, negative in Melzer’s reagent, with a double wall, endospore brown, thick, separated from thin, hyaline exospore by interwall pillars, 9-11.5 × 6-9 µm.
Type of rot. White rot of living hardwoods.
Cultural characteristics. Unknown.
Substrata. Usually on living Fagus, but also noted on other hosts such as Aesculus, Acer, Fraxinus, Prunus. Quercus and Ulmus.
Distribution. A southern species known throughout south and Central Europe north to Denmark where it follows Fagus, and in number of localities in Blekinge and Skane in the southernmost part of Sweden. Its distribution to the east is not known. http://www.mycobank.org/...
Corner, E.J.H. 1983. Ad Polyporaceas I. Amauroderma and Ganoderma. Beihefte zur Nova Hedwigia. 75:1-182
Description type : Non-original description
Description : G. pfeifferi Bres.
Marchland, Doc. mycol. V, f. 19 (1975) 48.
Pileus -19 cm in radius, sessile, dimidiate, applanate, becoming ungulate up to 16 cm high, sulcate, laccate, reddish brown to blackish purple, sticky chestnut brown near the tumid white margin. Tubes in more or less distinct layers, up to 20 layers varying 8-30 mm long, dark brown; pores c. 200 µm wide, round, dissepiments 50-150 µm thick, white to yellowish or finally golden.Flesh 2-6 cm thick, rustbrown to dark brown or chocolate, with a dark crust -1 mm thick, with dark crustaceous lines in the flesh and becoming invaded with white mycelium.
On dead trunks and stumps of frondose trees particularly Fagaceae, Eurasia, north temperate.
Spores (9-)10-12 x (6-)8-l0 µm, dull fuscous brown in the mass, not truncate, or subtruncate; endospore 9-10.5 × 6-9 µm, pale fuscous brown s. m., distinctly echinulate, 1-guttate.
Hyphae as in Ganoderma; skeletal stalks 200-1.200 µm long, dilating from mediate hyphae 2.5-3 mm wide to 3.5-5 µm wide (-6 µm in potash), with 0-3(-4) branches ending in flagelliform processes -300 µm long; Bovista-hyphae as in G. lucidum; dissepiments not agglutinated. Surface of pileus with the skeletal hyphae and binding processes anticlinal and invested with generative hyphae some of the end-cells becoming more or less clavate -40 × 6-10 µm, the investing layer up to 140 µm thick but the generative hyphae not with isodiametric cells as in Amauroderma, the generative hyphae forming a palisade of lobulate clavate cells on septate stalks without clamps (Hansen 1958).
I give this description, drawn from my own notes on specimens from England and from the detailed description of Marchland, for comparison with the following variety. The structure of the upper surface is intricate and needs yet further study, for the accounts by Hansen, Steyaert, Ryvarden, and myself do not entirely agree. There is certainly no regular palisade of clavate cells.
File by : E. Gerhardt
File type : macrophoto
Device directory : CD\0001\0007
FileName : ganoderma_pfeifferi.jpg
Page number : 654
Bernicchia, A. 2005. Polyporaceae s.l., Fungi Europaei. 10
On Internet : Yes
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