Clavulina ossea (URM 89970, holotype). a, b Basidiomata. c, d Incrusted hyphae with clamps (Melzer, KOH+floxine, respectively). e basidiospores (KOH+floxine, KOH, Melzer’s, respectively). Scale bars: a = 1 cm, b = 2 cm, c-e = 10 µm.