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Page number:129 
Description type:Non-original description 
Description:Neofabraea malicorticis H. S. Jacks. -Fig 49 P-S
Anamorph.- Cryptosporiopsis curvispora (Peck) Gremmen
Description in vivo.- Apothecia erumpent through the upper dark tissue of the acervular stromata of the previous year, solitary or in clusters, sessile or with a short, stout stalk. Disc circular, 0.5-1.0 mm diam, often merging to indefinite, larger complexes, first concave to flat, then convex, greyish, pale flesh or brownish; the margin weakly developed, the disc lined by old, darker tissue of the former acervular stroma. Receptacle covered by surrounding older stroma.
Asci cylindrical-clavate, the apex truncate-rounded, narrowed into a short stalk, 75-150 ´ 10-20 ?m (NT), 8-spored; the apical apparatus IKI+ or -, sometimes blueing in old herbarium material, Mlz-. Ascospores inequilateral, elongated ellipsoid (average L/W 3.0-3.3), straight or curved, ends rounded or somewhat pointed, 0-septate, thin-walled and hyaline when shot off, 'coarsely granular or finely guttulate' fide Kienholz, 1939; 12.5-26 ´ 5-9 ?m, average 19.6 ´ 6.3 ?m (N = 373, Kienholz, 1939); later 1-3(-5)-septate, the walls tardily thicker and pale brown; especially under unfavorable conditions for discharge, ascospores forming septa and then germinating within the asci with hyphae that penetrate the ascus tip, developing phialides that liberate typical conidia from the surface of the hymenium (Jackson, 1913); Paraphyses numerous, filiform, septate, obtuse, simple or branched, hyaline, 1.8-2.5 ?m wide; apical cells swollen up to 6 ?m, with smooth, hyaline walls and finely granular contents.
Conidiomata stromatic, acervular, erumpent from bark, often in characteristic anthracnose cankers, circular or irregular and often merged, plane under dry conditions, pulvinate and liberating creamy masses of conidia from the surface under humid conditions, 0.2-1.2 mm diam. Conidiomatal wall at the base of the stroma mainly composed of isodiametric cells with hyaline to pale brown walls thickened up to 1 ?m, covered by a 20-150(-300) ?m thick tissue of prismatic or hyphal cells 6.5-12 ´ 4-6 ?m in vertical rows, giving rise to conidiophores all over the exposed surface.
Macroconidiogenous cells discrete or integrated in simple or branched, septate, acrogenous or acropleurogenous conidiophores 18-45 ´ 3.5-4.5 ?m; determinate, phialidic, with a minute periclinal thickening, terminal cells cylindrical, 10-32 ´ 3.5-5.5 ?m. Macroconidia typically weakly to strongly curved (sickle- to U-shaped), more rarely straight, ends somewhat pointed or rounded, 0-septate, hyaline and thin-walled when liberated, with granular contents or variable numbers of oil droplets, 15-35 ´ 3-6 ?m (Kienholz, 1939); tardily becoming 1-2-septate.
Substrata.- Causing anthracnose canker of branches and twigs of apple, but also several other hosts including Pyrus spp., Cydonia oblonga, and Prunus spp., e.g., peach (P. persica), and apricot (P. armeniaca). According to Grove (1990), flowering quince (Chaenomeles japonica), hawthorn (Crataegus spp.), mountain ash (Sorbus spp.), serviceberry (Amelanchier spp.) are also attacked. In addition, this species and N. perennans cause the Bull's eye rot of fruit.
Distribution.- North America, Europe (Denmark, Netherlands, Portugal), and New Zealand.

 
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