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 Add this item to the list   830253 Original description
   
Description type:Original description 
Description:Forming distinct white colonies, very small and dense, covering both sides of the leaves, causing discolorations of entire leaves or even malformations. Mycelium amphigenous, effuse and persistent. Hyphal appressoria distinctly lobed, solitary (Figure 1, A). Conidiophores, short to very long, 54.5‒171.0(‒235) × 5.8‒8.0 μm, aring from the upper surface of hyphal mother cells (Figure 1, B‒D). Foot-cells straight, (23‒)30.5‒75.0 × 5.7‒7.7 μm, followed by 1 to 3(‒4) cells, 13‒80 μm in length. Conidia formed singly, hyaline, ellipsoid-ovoid or oblong, 18.6‒35.5 × 10‒14 μm with a length/width ratio varying from 1.4‒3.0(‒3.3) (Figure 1, E‒G). Germ tubes on the conidia with lobed apex or longitubus pattern, apex simple or somewhat swollen, produced laterally, near the middle or in perihilar position (Figure 1, H‒J). Chasmothecia, amphigenous, scattered, 70‒100.0 μm diam (Figure 1, K). Peridium cells irregularly polygonal, 3.5–12.5 µm diam. (Figure 1, M). Appendages 6‒14 per chasmothecium, mycelioid, hyaline, aseptate, extremely long and flexuous, 1.3‒7.0 times as long as the chasmothecial diameter, up to 600 μm, 3–9 µm wide in the lower half, apices mostly sinuous-geniculate or branched, circinate at the near apex, coils relatively loose and wide (Figure 1, L). Asci 4–6 per chasmothecium, broad obovoid-saccate or clavate, short-stalked or sessile, 48‒71.5 × 28.5‒49.5 μm (Figure 1, N‒R). Ascospores ovoid or ellipsoid5‒8 in per ascus, 13.0‒20.5 × 10.5‒14.5 μm (Figure 1, S‒T). 
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