Termitomyces fuliginosus

Termitomyces fuliginosus R. Heim

Index fungorum number: 291352

Pileus 5-8 cm diam., conic to convex then convexo-applanate to plane when mature, with a spiniform at first and bluntly pointed perforatorium when mature; surface golden brown to brownish orange, radially fibrillose and shiny, margin at first incurved then straight, often splitting. Lamellae free, white to cream, 0.5 cm wide, crowded with lamellulae. Stipe 8-10 cm long, 1.0-1.3 cm wide, central, cylindrical or slightly bulbous at stipe base, surface cream to pale brown covering with pale brown fibrillose, solid fibrous. Annulus membranous ephemeral and often absent after the initial stage, attached to the upper of stipe. Pseudorhiza 10-20 cm long, 0.3-0.5 cm thick, cylindrical to slender, surface white, smooth or longitudinally striate, solid. Spore deposit white. Basidiospores 4.5-7 x 3-4.5 μm, ellipsoid; smooth and thin-walled, inamyloid. Basidia 16-20 x 6-8 μm, clavate, bearing four sterigmata, inamyloid. Hymenophoral trama regular, 50-72 μm wide, inamyloid. Cheilocystidia crowded, 18-24 x 10-11 μm, clavate, smooth and thin-walled, inamyloid. Pleurocystidia scattered to rare, 20-30 x 8.5-11 μm, similar to cheilocystidia. Pileipellis a repent epicutis of narrow, radial hyphae, 1.0-2.5 μm diam.

Specimens examined: Nakhon Ratchasrima: Wang Nam Khiao, Sakaerat environmental research station, in dry evergreen forest (TERM043), Nakhon Ratchasrima: Wang Nam Khiao, Sakaerat silviculture research station, dry dipterocarp forest (TERM037, TERM038), Nakhon Ratchasrima: Wang Nam Khiao, Thaplan National park, in Hopea odorata plantation (TERM008), Nakhon Ratchasrima: Wang Nam Khiao, Wang Nam Khiao Forestry Student Training Station, in dry evergreen forest (TERM011), Nakhon Ratchasrima: Wang Nam Khiao, Sakaerat environmental research station, in dry evergreen forest (TERM023), Nakhon Ratchasrima: Wang Nam Khiao, Sakaerat silviculture research station, dry dipterocarp forest (TERM040, TERM041), Kanchanaburi: Thong Pha Phum, teak plantation (TERM056).

Fig 1. Phylogenetic tree based on ITS1-5.8S-ITS2 of Termitomyces sequences in this study and from GenBank (blue letter) using the Maximum parsimony method. Agaricus abruptibulbus is used as an outgroup. Numbers at the node are bootstrap scores of 1000 replicates.