Pleosporales » Didymosphaeriaceae


Curreya Sacc., Syll. fung. (Abellini) 2: 651 (1883).

            = Cucurbidothis Petr., Annls mycol. 19(3-4): 201 (1921).

       Index Fungorum number: IF 1356; Facesoffungi number: FoF 08237, 6 morphological species (Species Fungorum 2023), 6 species with molecular data.

          Saprobic on cone scales and dead wood. Sexual morph: Ascomata black, immersed, with upper part becoming erumpent, scattered or gregarious, sometimes laterally fused to stromatic, sphaeroid, rounded at apex, with short papilla. Peridium comprised of pseudoparenchymatous cells, with outer later thickened and dark, with inner layer thinner and lighter in colour, dark-brown to black. Hamathecium composed of filiform, hyaline, septate, branched pseudoparaphyses. Asci cylindric-clavate to broadly clavate, 8-spored, bitunicate, fissitunicate with short pedicel, thickened and rounded at apex with a wide flattened, inconspicuous, ocular chamber. Ascospores biseriate or partially uniseriate, fusiform-ellipsoid to broadly ellipsoid, brown to reddish brown, muriform, smooth-walled. Asexual morph: Coniothyrium-like (adapted from Doilom et al. 2013).

          Type species: Curreya conorum (Fuckel) Sacc.

          Notes: Curreya is characterized by black, immersed ascomata, cylindric-clavate to broadly clavate, 8-spored asci, biseriate or partially uniseriate, fusiform-ellipsoid to broadly ellipsoid, brown to reddish brown, muriform ascospores. Saccardo (1883) described Curreya based on Homostegia conorum Fuckel. Theissen and Sydow (1915) classified Curreya in Dothideales. Petrak (1940) treated Curreya under Cucurbitaria. Barr (1981) wrongly synonymized Curreya under Pleospora as she ignored the Coniothyrium-like, pycnidial asexual morph. Arx and van der Aa (1983) treated Curreya as a distinct genus based on the Coniothyrium-like asexual morph. Barr (1990) transferred Curreya in Leptosphaeriaceae based on the peridium wall comprising of small pseudoparenchymatous cells, thin-walled asci and Coniothyrium-like asexual morph. Zhang et al. (2012b) placed Curreya in Cucurbitariaceae based on morphology and phylogeny. Hongsanan et al. (2020b) accepted Curreya in Didymosphaeriaceae. Molecular markers available for Curreya are BTUB, ITS, LSU, RPB2 and TEF-1.


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