TABLE 2.

Morphological comparisons of species which are phylogenetically closely related to Arthrinium acutiapicum and Arthrinium pseudorasikravindrae.

Characters	A. acutiapicum	A. chinense	A. paraphaeospermum	A. pseudorasikravindrae	A. rasikravindrae
Host/substrate	Bambusa bambos/dead twigs	Fargesia qinlingensis/culms	Bambusa sp./culms	Bambusa dolichoclada/sheath	Soil, Coffea arabica/leaf, Pinus thunbergii/wood, marine submerged wood, Oryza granulate/leaf
Localities	China	China	Thailand	China	Norway, China, Japan
Life mode	Saprobic	Saprobic	Saprobic	Saprobic	Saprobic, endophytic
Conidiophore	Reduced to conidiogenous cells	Reduced to conidiogenous cells	Reduced to conidiogenous cells	10–15 × 3–7 μm, cylindrical, branched, aseptate thick-walled hyaline	5-90 × 1-1.5 μm, arising from swollen basal cells, unbranched, septate, thin-walled hyaline to subhyaline
Conidiogenous cell	4–7 × 2–3 μm, cylindrical to ampulliform with pointed apex, pale brown, apex hyaline	1.5–6.5 × 1–3.5 μm, aggregated in clusters on hyphae, doliiform to clavate or lageniform, hyaline to pale brown	25–30 × 4–6 μm, aggregated in clusters on hyphae, elongated, conical to ampulliform, hyaline	4–10 × 1.2–5 μm, phialidic with periclinal thickening, ampulliform, cylindrical or doliiform, hyaline to olivaceous	5–10 × 2–4 μm, phialidic with periclinal thickening, ampulliform, hyaline
Conidia	Monomorphous, 7.5–10 × 8.5–12 μm, globose in surface view, subglobose to oval in side view, brown to dark brown, smooth, apex and base blunted, dark equatorial slit	Monomorphous, 8.5–11 × 6.5–8 μm, subglobose to lenticular, brown to dark brown, smooth to finely roughened, a longitudinal germ slit	Dimorphous, globose 10–19 × 11–20 μm, ellipsoid to clavate 20–30 × 9–13 μm, brown, smooth to somewhat granular, with pale equatorial slit	Monomorphous, 5–10 × 5.5–11 μm, globose in surface view, lenticular in side view, dark brown, thick-walled, with a pale equatorial slit, finely roughened, one or two concentric pale rings	Dimorphous, lenticular 10-15 × 6-10.5 μm, elongate to clavate 15-25 × 7.5-10 μm, arising acropleurogenously, brown to olivaceous, smooth, two-walled, prominent truncate base and equatorial germ slit
References	This study	Jiang et al. (2020)	Hyde et al. (2016)	This study	Singh et al. (2012)