| Ovicillium asperulatum (Synonym: O. napiforme) | Soil; wood of Sorbus aria | Simple or mostly branched, bearing whorls of 2–4 phialides, up to 105 long, with cell walls usually thicker than those of the vegetative hyphae | Straight or slightly bent, acicular, 28–68 long, 1–2 wide at the base, with minute collarette and distinct periclinal thickening at the apex | Globose, 3–4 (– 5) diameter, chromophilic | Absent | Abundant, subglobose or oval, 5–10 × 5–9 | Giraldo et al. 2012; Zare and Gams 2016 |
| Ovicillium attenuatum | Auricularia sp. | Erect, 150–500 tall, with cyanophilic encrustation, usually with whorls, but sometimes also solitary phialides | Aculeate, attenuated from the middle, mostly undulated near the tip, rather cyanophilic, measuring 25–50 × 1.7–3.3 | Oval to subglobose, strongly cyanophilic, measuring 3.5–5 × 2.5–3.8, aggregated in large globose to subglobose heads | Absent | Absent | Zare and Gams 2016 |
| Ovicillium oosporum | Theobroma gileri | Erect, solitary and verticillate, with slightly pigmented base producing solitary or verticillate phialides of up to five per node | Verticillate, measuring 20–50 × 1.2–2.2 | Subglobose, oval to broadly oval, in some strains with a basal protrusion, cyanophilic, measuring 4–6 × 2.5–4 | Absent | Present or absent | Zare and Gams 2016 |
| Ovicillium pseudoattenuatum | Soil | Single phialide or whorls of 2–5 phialides or verticillium-like directly from hyphae, up to 500 long | Straight, somewhat inflated base, attenuated from the middle, sometimes undulated near the tip, 16.0–37.5 × 1.5–2.4 | Ellipsoidal to cylindrical, 3.2–4.0 × 1.7–3.2, aggregated in large globose to subglobose heads | Absent | Absent | In this study |
| Ovicillium sinense | Pupa (Lepidoptera) | Single phialide or whorls of 2–5 phialides or verticillium-like, 17.0–21.7 × 2.3–3.0 | Cylindrical, somewhat inflated base, 16.2–25.8 × 1.7–2.4, tapering to a thin neck | Globose to ovoid, 2.1–2.9 × 1.1–1.7, aggregated in large globose to subglobose heads | – | – | Chen et al. 2024 |
| Ovicillium subglobosum | Soil | Erect, solitary and verticillate with up to four phialides per node | Measuring 25–55 × 1.5–2.2, producing conidia in large globose heads. | Subglobose with an inconspicuous protrusion at the base, rather cyanophilic, measuring 3.5–5.5 × 3.5–4.5 | Absent | Absent | Zare and Gams 2016 |
| Ovicillium variecolor | Soil | Erect, mostly branched, bearing whorls of 2–5 phialides, up to 290 long, with walls usually thicker than those of the vegetative hyphae | Straight, acicular, 18–95 long, 1–2 wide at the base, with periclinal thickening at the apex, collarette inconspicuous; some phialidic conidiogenous cells without a basal septum (adelophialides) | Subglobose or ovoid, 3–4 (– 5) × 2–4, slightly apiculate base, chromophilic, arranged in slimy heads | – | Absent | Giraldo et al. 2012 |