TABLE 2 in Taxonomy and phylogeny of Hypoxylon zhaotongensis sp. nov. (Hypoxylaceae, Xylariales), a bambusicolous fungus from Yunnan, China

TABLE 2. Diagnostic characteristics of Hypoxylon zhaotongensis and closely related species. The main differences in morphology are highlighted in red blod. “-”: not available in the protologue.
SpeciesH. hongheensis (Yang et al. 2022)H. pilgerianum (Ju & Rogers 1996)H. wuzhishanense (Ma et al. 2022)H. zhaotongensis (this study)StromataAggregated, reddish-brown (a52a2a) to brown (a52a2a) stromata, ostioles at the same level of the stromatal surfaceDark purple (800080) stromata, ostioles lower than the stromatal surfaceAggregated, rust Livid purple (800080) to brown brick (a52a2a) stromata, ostioles lower than the stromatal surfaceAggregated, purple (800080) to brown brick (a52a2a) stromata, ostioles barely to slightly higher than the stromatal surfaceKOH-extractable pigmentsDark orange (ff8c00)-Yellowish-brown (996515)Yellowish-brown (996515)Perithecia (width × high) (mm)0.3–0.45 × 0.3–0.50.2–0.3 × 0.1–0.20.2–0.3 diam. × 0.1–0.2 high0.1–0.5 × 0.2–0.6Apical apparatus (high × broad) (µm)“J+” apical apparatus“J+” apical apparatus, 0.5–1 high × 2.5 broad“J+” apical apparatus, 1–1.9 high × 2.2–3.4 broad“J+” apical apparatus, 0.5 high × 3.0–3.5 broadAscospores (µm)9–11 × 4.5–5.510–12 × 4–59.5–14 × 5.4–6.710–20 × 7–9Germ slit (µm)Without germ slitStraight germ slitWith straight to less frequently sigmoid germ slit spore-lengthStraight germ slit