Holotype of Hebeloma ambustiterranum TLXM 6155 (HJB16802) A basidiospores ×1600 B spore ornamentation ×1600 C basidiospores in Melzer’s reagent ×1600 D–E cheilocystidia ×1000 F basidia ×1000 G cheilocystidia on lamella edge ×500 H caulocystidia ×500 I Cutis ×125. All in KOH, except C. Scale bars: 5 µm (A–F); 10 µm (G–J); 50 µm (K). Photos H.J. Beker.