Figure 5. One of the 913 MP trees based on combined dataset of ITS, IGS and rpb2.

The upper numbers on each branch denoted the percentage of bootstrap replicates/Bayesian posterior probabilities. Only bootstrap values higher than 50% in MP or 0.90 in Bayesian were shown. The letters A–G in the right table indicated macroscopic characters demonstrated in Fig. 1. A denoted the shape of pileus: 1. reniform and concave; 2. reniform and convex; 3. circular and convex; 4. circular and concave. B denoted the length of stipe: 1. long (more than the semi-diameter of pileus); 2. short (less than the semi-diameter of pileus). C denoted the attachment of sitpe: 1. lateral; 2. central. D denoted the pileus surface: 1. with radial furrows; 2. with concentrically sulcate zones. E denoted the thickness of pileus: 1. thin (<1 cm); 2. thick (>1 cm). F denoted the colour of pore surface: 1. whitish; 2. yellowish. G denoted the length of tuber: 1. short (less than one third of the pileus thickness); 2. long (more than one third of the pileus thickness). The letters H and I indicated the common characters of the six species in macroscopic morphology. H denoted the appearance of pileus: 1. laccate; 2. nonlaccate. I denoted the colour of the context: 1. light-coloured; 2. dark brown. The letters J–N denoted five microscopical characters. J denoted the length of cutis elements: 1. short (25–45 µm); 2. moderate (30–60 µm); 3. long (50–100 µm). K denoted the shape of cutis elements: 1. clavate; 2. subcylindrical. L denoted the state of Bovista-type ligative hyphae: 1. Presence; 2. Absence. M denoted the length of basidiospores cum myxosp.: 1. short (7.0–9.5 µm); 2. moderate (9.0–11.5 µm); 3. long (11.0–13.5 µm). N denoted the type of basidiospores: 1. strongly echinulate; 2. slightly echinulate.