7 \times 2.8 \mu \textm \), n = 10), in the globose asci, olivaceous, oblong, 1-celled, smooth (Fig. 99d). Anamorph: Phoma-like coelomycetes. On MEA colonies spreading, flat with sparse aerial mycelium, covering the dish after 1 month; surface smoke-grey with dirty white margins; reverse olivaceous-grey
with luteous patches. On PDA spreading without aerial mycelium, colonies transparent, sporulating profusely with black, globose ascomata Belnacasan ic50 and pycnidia of a Phoma-like anamorph. On OA similar, lacking aerial mycelium, sporulating profusely with black, globose ascomata (based on CBS 297.56). Material examined: USA, Michigan, East Lansing, Science Greenhouse, isolated from damped off Phlox seedling, Dec. 1952, F.M. Clum (No. 27) (MSC 133.118, type). Notes Morphology Pycnidiophora was formally established by Clum (1955) based on its “imperfect stage of pycnidium”, which was subsequently Selleckchem Selumetinib confirmed as the sexual stage (Cain 1961; Thompson and Backus 1966). Clum (1955) has described and tentatively assigned P. dispersa (Clum) Cain to Aspergillaceae
(= Eurotiaceae), and Stolk (1955b) has proposed to assign the morphologically comparable species P. multispora Saito & Minoura ex Cain to Eurotiaceae as well. Cain (1961), however, suspected that the 32 ascospores are actually the disarticulated segments of eight 4-celled ascospores, thus assigned it under Preussia (Sporormiaceae). After detailed study, Thompson and Backus (1966) confirmed that the so-called “eight 4-celled Rucaparib manufacturer ascospores” do not exist in the development of the asci in both P. dispersa and P. multisporum. Thus, Pycnidiophora was assigned to Eurotiaceae (Eurotiales) (Thompson and Backus 1966). Phylogenetic study Phylogenetic study based on the ITS-nLSU rDNA sequences indicated that Pycnidiophora dispersa nested within clade of Westerdykella (including the generic type, W. ornata) (Kruys and Wedin 2009).
Morphologically, both genera have cleistothecioid ascomata, asci with short or without pedicels and ascospores 1-celled and no germ slits. Thus, Pycnidiophora is treated as a synonym of Westerdykella (Kruys and Wedin 2009). Concluding remarks Although the pleosporalean status of Pycnidiophora is verified, morphological characters such as the cleistothecioid ascomata and irregularly arranged asci, which do not show Selonsertib datasheet typical bitunicate or fissitunicate characters, absence of pseudoparaphyses as well as the ascospores separating into partspores very early all challenge the traditional concept of Pleosporales (Zhang et al. 2009a). Obviously, most of these morphological characters overlap with those of the Eurotiales. Sporormiella Ellis & Everh., N. Amer. Pyren.: 136 (1892). (Sporormiaceae) Current name: Preussia Fuckel, Hedwigia 6: 175 (1867) [1869–70]. Generic description Habitat terrestrial, saprobic (coprophilous). Ascomata medium-sized, solitary, scattered, or in small groups, semi-immersed to nearly superficial, globose, subglobose, black, coriaceous, ostiolate, periphysate.