Table 2.
Microscopic features of different Pleurostoma species during asexual life cycles.
| Species | Hyphae | Phialides | Conidia |
|---|---|---|---|
| P. hongkongense | 2–6 μm wide, septate, verruculose, and hyaline | 3–30 μm long, phialide variety similar to P. ochraceum | Microconidia 2–8 μm long, spherical, ellipsoidal or oblong; macroconidia most commonly allantoid and reniform |
| P. repens | 2–4 μm wide, septate, smooth and initially hyaline, pale brown when matured | 6–30 μm long, inconspicuous, slightly flared collarrettes on elongated phialides, conidiophores often branched | 3–6 μm long, cylindrical to allantoid only |
| P. richardsiae | 2–4 μm wide, septate and smooth when young, heavily septated, thick-walled and brown when matured | 10–35 μm long, flask shaped with distinct saucer-shaped flared collarette at apex | 2–6 μm long, commonly spherical or ellipsoidal |
| P. ochraceum | 1.2–3.2 μm wide, branched, septate, smooth and verruculose | 6–20 μm long, three types of phialides described: type 1 adelophialides, type 2 elongate-ampulliform, and larger, longer type 3 cyclindrical/ampulliform phialides | 1.5–6 μm long, melanised sub-spherical or ellipsoidal |
| P. ootheca | 1.8–3.3 μm wide, septate and hyaline | 6–19 μm long, inconspiciously flared collarettes, short phialides | 3–6 μm long, most commonly oblong, straight, or allantoid; shorter and ellipsoid conidia also present |