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Description type:Non-original description 
Description:G. lucidum (Fr.) Karst. Figures 4, 5, 19 The following details come from collections made in East Anglia. Spore 9.5-12 x 6-6.5 µm, but swelling in potash 10-13 x 6.8-8 µm, endospore 8-9.5 x 4.7-5.7 µm, in potash 9.3-10.5 x 5.3-6.5 µm, brown distinctly echinulate, 1-guttate. Basidia 24-33 x 11.5-14.5 µm; sterigmata 3-4, 4-4.5 µm. Cystidia -20 x 3-5 µm (-35 x 9.5-14 µm, Demelius), near the pore-mouths and in the immature hymenium, evanescent, ventricose with narrow apex, thin-walled, colourless. Hymenium continuous, not thickening.
Hyphae trimitic with skeleto-binding cells and Bovista-hyphae, not encrusted, not dextrinoid; skeleto-binding cells -2.500 µm long overall, terminal, the stalk 250-1.700 x 3.5-6(-8), µm, (-14 µm, Hansen), in places with ampulliform swellings -9 µm, with thick brown walls darening in potash but scarcely swelling, dividing over a short distance into 1-4(-5) branches -1.000 µm long, simple or once bifid, tapering into hyaline tips 1-2.5 µm wide; binding hyphae as Bovista-hyphae - 600 µm long, 1.5-3 µm, wide on origin and developing thick brown walls, 0-3 times bifid, tapering to filiform tips 0.5-1 µm wide, derived from short thick-walled intercalary generative cells; generative hyphae 1.5-5.5 µm wide, clamped, not or scarcely inflating, the growing tips at the margin of the pileus 2-3.5 wide; dissepiments with skeletals 3-4 µm wide, trimitic as the flesh (dimitic, Hansen), not agglutinated. Surface of pileus with a laccate crust -200 µm thick, consisting of three layers: - a, an outer amorphous red-brown resinaceous excretion 20-30 µm thick, mostly soluble in potash with a slight brown solution; b, a close palisade of agglutinated subclavate cells 40-75 x 6-10 µm (-15 µm, Hansen), with narrow interwoven stalks 3-4 µm, wide, arising from generative hyphae, developing thick brown walls (-5 µm, thick) and often linear lumen, the swollen ends of the cells forming a regular layer 30-40 µm thick immediately below the resinous excretion; c, a hypodermal layer c. 100 µm thick, consisting of agglutinated generative hyphae 3-4 µm, wide with slightly thickened bright yellow walls (the colour in the inner part of the walls and turning brown in potash, but in the cytoplasm before wall-thickening), also with the tapered ends of binding processes.
The crust develops from a delicate layer of thin-walled clavate cells 1120 x 5-7 µm, formed at the ends of generative hyphae, like an incipient hymenium. They excrete the resinous material which forms the outer layer, and they lengthen basipetally into the flexuous stalks. The tapering ends of binding processes are subsequent intrusions. The abundant Bovista-hyphae seem characteristic. Whether the dried spores always swell appreciably in potash, I am uncertain, but the possibility is a precaution that needs to be taken. It seems yet uncertain if typical G. lucidum occurs in the tropics. The most recent critical account of it is given by Jähn, Kotlaba and Pouzar (1980) and by Kotlaba and Pouzar (1981). In comparing it with their new species G. atkinsonii they emphasize the colour of the living pileus of G. lucidum as bright yellow to orange and cherry red when young, then bloodred, purplish red, to reddish brown, the colours darkening on drying. It seems that G. atkinsonii needs comparison with G. neojaponicum Imazeki (1939).
In my key to the Malesian species of laccate Ganoderma (p. 125) G. lucidum comes close to G. chalceum, but there is no record of lobulate palisade cells in G. lucidum. G. tropicum, with broader spores and many unbranched skeletal (acicular), should be compared.
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