Peridium < 10 μm wide laterally, up to 25 μm thick at the apex, thinner at the base, composed of lightly pigmented thin-walled cells of textura prismatica, cells up to 12 × 4 μm diam., cell wall <1 μm thick, apex cells heavily pigmented, smaller and walls thicker (Fig. 31b and c). Hamathecium of dense, long cellular pseudoparaphyses, 1.5–2.5 μm broad, septate. Asci 50–70 × 7.5–10 μm (\( \barx = 61.4 \times 8.4\mu m \), n = 10), learn more 8-spored, with a short, thick,

furcate 3-MA pedicel, up to 12.5 μm long, bitunicate, fissitunicate, cylindrical to fusoid, no obvious ocular chamber (Fig. 31d, e, f and g). Ascospores 16–20 × 4–6 μm (\( \barx = 17.3 \times 5\mu m \), n = 10), obliquely uniseriate and partially overlapping to biseriate, broadly fusoid to fusoid, hyaline to pale yellow,

2-septate, sometimes 1- or 3-septate, constricted at the two main septa, the medium cell often broader than the others, smooth (Fig. 31h). Anamorph: Sphaerellopsis filum (Biv.) B. Sutton (Sivanesan TGF-beta/Smad inhibitor 1984). Material examined: BRAZIL, Sao Paulo, on leaves of Canna sp., 1905, leg. Usteri, nro; det. Ove Eriksson (LPS 5.415, type). Notes Morphology Eudarluca was introduced based on E. australis (Spegazzini 1908), and E. australis was subsequently treated as a synonym of E. caricis (Biv.) O.E. Erikss. (Eriksson 1966). The most striking character of E. australis is its 2-septate ascospores, which is quite rare in Pleosporales. Sphaerellopsis filum, anamorph of E. caricis, is a cosmopolitan hyperparasite associated with a large number of rust species (Płachecka 2005). Phylogenetic study A detailed phylogenetic study was conducted on Sphaerellopsis filum, the anamorphic stage of Eudarluca australis based on both AFLP and ITS sequences, and only limited variation between click here different isolates was detected (Bayon et al. 2006). Concluding remarks By blasting within GenBank, ITS sequences of E. caricis (= E. australis, strain MullMK, GB, access AY836374) are most comparable with species in Leptosphaeria and Phoma. Thus Eudarluca appears to be related to Leptosphaeriaceae pending further study. Falciformispora K.D.

Hyde, Mycol. Res. 96: 26 (1992). (Trematosphaeriaceae) Generic description Habitat freshwater, saprobic. Ascomata small, scattered to gregarious, erumpent to nearly superficial, depressed globose to ovoid, black, ostiolate, epapillate, coriaceous. Peridium thin, comprising two cells types, outer layer composed of thick-walled cells of textura angularis, inner layer composed of hyaline compressed cells. Hamathecium long and cellular pseudoparaphyses, septate, embedded in mucilage. Asci 8-spored, bitunicate, fissitunicate, broadly clavate to fusoid, with a short, thick pedicel. Ascospores fusoid to somewhat clavate, hyaline, usually slightly curved, multi-septate. Anamorphs reported for genus: none. Literature: Hyde 1992b; Raja and Shearer 2008. Type species Falciformispora lignatilis K.D. Hyde, Mycol. Res. 96: 27 (1992). (Fig. 32) Fig.