Phylogenetic and morphological studies in Xylodon (Hymenochaetales, Basidiomycota) with the addition of four new species Author Riebesehl, Janett Author Yurchenko, Eugene Author Nakasone, Karen K. Author Langer, Ewald text MycoKeys 2019 47 97 137 http://dx.doi.org/10.3897/mycokeys.47.31130 journal article http://dx.doi.org/10.3897/mycokeys.47.31130 1314-4049-47-97 Xylodon cystidiatus (A.David & Rajchenb.) Riebesehl & Langer, Mycological Progress 16(6):645 (2017) ≡ Schizopora cystidiata A. David & Rajchenb., Mycotaxon 45:140 (1992). Remarks. We undertook a thorough morphological analysis of the specimen FR-0249200 ( Reunion , Plaine des Fougeres , on fallen angiosperm twig, leg. E. Langer, 12 Sep 2013), because it provided the first sequences of X. cystidiatus . We are confident that FR-0249200 is X. cystidiatus , although we detected minor differences from the descriptions in David and Rajchenberg (1992) and Langer (1994) . Some of the differences we noticed include: (1) the encrusted cystidia in FR-0249200 are mostly thin-walled with finer crystals; (2) the spores in our specimen were slightly broader 5-6 x 3.5-4.3 µm (L = 5.4 µm , W = 3.9 µm , Q = 1.4) than in published records 5-6 x 3-4 µm . Photographs of the basidioma (Fig. 11) and drawings of the microscopic features (Fig. 12) of FR-0249200 are provided for future identifications. Figure 11. Basidioma of Xylodon cystidiatus (FR-0249200). Scale bar: 1 cm. Figure 12. Micromorphology of Xylodon cystidiatus (FR-0249200): A subicular hyphae B crystals from dissepiment in 3% KOHC crystals from dissepiment in MzD portion of hymenium and subhymenium E hyphal endings from dissepiment edges F encrusted cystidia in 3% KOHG encrusted cystidia in MzH smooth basidioles and cystidioles J encrusted basidiole (in Mz) K basidia L basidiospores. Scale bars: 10 μm ( A-K ); 5 μm (L).