Table 2.

Diagnostic characters of the Hypoxylon fuscum complex.

Taxon	Designation No/(Status)	Ascospores (µm)	Mean (µm)	Host	Known Distribution	KOH-Extractable Pigments	Secondary Metabolites
Hypoxylon fuscum sensu stricto	Ww3723/Epitype	12.5–15.5 × 5–7	13.2 × 5.8	Corylus avellana	Europe	Amber (47) to Honey (64)	1,5
Hypoxylon fuscum sensu stricto	WU 43621	13–15.8× 4.8–6	14.4 × 5.4	Corylus avellana	Austria	Amber (47) to Honey (64)	1,5
Hypoxylon eurasiaticum	GUM 1597 (H)	10–12.5 × 4.5–6	11.25 × 5.25	Quercus castaneifolia	Iran	Amber (47) to Orange (7)	1,5,6
Hypoxylon eurasiaticum	KR-M-0005886	9–12 × 3.8–5	10.5 × 4.4	cf. Betula	Poland	Isabelline (65), Olivaceous (47) or Hazel (88)	1,5,6
Hypoxylon pseudofuscum	KR-M-0005879 (H)	12–16 × 4.8–7.3	14 × 6	Alnus glutinosa	Germany	Isabelline (65), or Hazel (88)	1,4,5,6
Hypoxylon pseudofuscum	GUM 987	11–15 × 4.5–6.5	13 × 5.5	Alnus sp.	Iran	Amber (47) to Oramge (7)	1,4,5,6
Hypoxylon pseudofuscum	KR-M-0005877/ KR-M-0005876	11–15 × 5.5–6.5	13 × 6	Salix sp.	Germany	Isabelline (65), Olivaceous (47) or Hazel (88)	1,4,5,6