Search on : Taxa descriptions


 Add this item to the list  823416 Original description
Description type:Original description 
Description:Conidiomata immersed, pycnidial, 200 – 300 μm diam, globose, brown, with central ostiole, 30–40 μm diam, substomatal; wall of 3–4 layers of brown textura angularis. Conidiophores reduced to conidiogenous cells lining the inner cavity, hyaline, smooth, ampulliform, phialidic with percurrent proliferation at apex, 8–12 × 4–6 μm. Conidia (18–)19–21(–22) × (5–)6 μm, solitary, hyaline, smooth, prominently guttulate, subcylindrical, straight, apex obtuse, base truncate, 2 μm diam, 2-septate, with a septum a third in from each end. Microconidia in same conidioma, hyaline, smooth, guttulate, ellipsoid, apex obtuse, base truncate. Ascomata similar to conidiomata in anatomy. Pseudoparaphyses intermingled among asci, hyaline, smooth, septate, branched, hyphae-like, 2–3 μm diam, constricted at septa. Asci 8-spored, bitunicate, fissitunicate, narrowly ellipsoid to slightly clavate, 60–80 × 15–17 μm. Ascospores triseriate, fusoid-ellipsoid, hyaline to pale brown with thin mucoid sheath, constricted at median septum, developing two additional septa in apical cell (which is swollen and wider than basal cell), and one septum in basal cell, (18–)20–25(–27) × (5–)7(–8) μm.

Culture characteristics — Colonies flat, spreading, with moderate to abundant aerial mycelium and smooth, lobate margins, covering dish after 2 wk at 25 °C. On MEA surface dirty white, reverse saffron. On PDA surface olivaceous grey, reverse luteous. On OA surface dirty white.
Taxon name: