Termitomyces heimii
Index fungorum number: 324479
Pileus 0.8-3.5 cm diam., parabolic to campanulate then plane to uplifted when mature, with rounded perforatorium; surface white to cream and dark at the center when mature, velar squamulose on surface, margin at first incurved then straight, often splitting. Lamellae free, white to creamy, 1 mm wide, crowded with lamellulae. Stipe 1.3-4 cm long, 0.5-2 cm wide, central, cylindrical to subcylindrical, surface white to cream, smooth and glabrous, solid. Annulus membranous at first, forming the persistent double annulus on the upper of stipe, surface white to cream. Pseudorhiza 7-20 cm long, 0.5-1.5 cm thick, cylindrical, surface white to cream, smooth, leathery, hollow. Spore deposit not found. Basidiospores 6-9.5 x 4-6 μm, ovoid to ellipsoid; smooth and thin-walled, inamyloid. Basidia 18-19 x 5-8 μm, clavate to subcylindric, bearing four sterigmata, inamyloid. Hymenophoral trama regular, up to 100 μm wide, inamyloid. Cheilocystidia crowded, 21-35 x 14-20 μm, clavate to pyriform, smooth and thin-walled, inamyloid. Pleurocystidia rare, 20-34 x 11-18 μm, similar to cheilocystidia Pileipellis a repent epicutis of narrow, radial hyphae, 2.0-4.5 μm diam.
Specimen examined: Kanchanaburi: Thong Pha Phum, teak plantation (TERM055).
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.